/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stack_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:01:42,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:01:42,403 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 15:01:42,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:01:42,436 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:01:42,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:01:42,437 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:01:42,437 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:01:42,437 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:01:42,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:01:42,441 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:01:42,442 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:01:42,442 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:01:42,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:01:42,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:01:42,443 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:01:42,443 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:01:42,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:01:42,444 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:01:42,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:01:42,444 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:01:42,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:01:42,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:01:42,445 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:01:42,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:01:42,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:01:42,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:01:42,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:01:42,446 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:01:42,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:01:42,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:01:42,448 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:01:42,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:01:42,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:01:42,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:01:42,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:01:42,683 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:01:42,684 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:01:42,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-2.i [2023-11-17 15:01:43,818 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:01:44,065 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:01:44,066 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i [2023-11-17 15:01:44,088 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bfb3c11e/1b42c24754ed43568156a158e537ef67/FLAGae66f42f9 [2023-11-17 15:01:44,100 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bfb3c11e/1b42c24754ed43568156a158e537ef67 [2023-11-17 15:01:44,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:01:44,103 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:01:44,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:01:44,104 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:01:44,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:01:44,107 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:01:44" (1/1) ... [2023-11-17 15:01:44,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a645a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:44, skipping insertion in model container [2023-11-17 15:01:44,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:01:44" (1/1) ... [2023-11-17 15:01:44,159 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:01:44,590 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] [2023-11-17 15:01:44,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:01:44,637 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:01:44,670 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] [2023-11-17 15:01:44,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:01:44,729 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:01:44,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:44 WrapperNode [2023-11-17 15:01:44,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:01:44,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:01:44,731 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:01:44,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:01:44,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:44" (1/1) ... [2023-11-17 15:01:44,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:44" (1/1) ... [2023-11-17 15:01:44,806 INFO L138 Inliner]: procedures = 278, calls = 40, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 154 [2023-11-17 15:01:44,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:01:44,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:01:44,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:01:44,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:01:44,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:44" (1/1) ... [2023-11-17 15:01:44,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:44" (1/1) ... [2023-11-17 15:01:44,827 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:44" (1/1) ... [2023-11-17 15:01:44,828 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:44" (1/1) ... [2023-11-17 15:01:44,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:44" (1/1) ... [2023-11-17 15:01:44,839 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:44" (1/1) ... [2023-11-17 15:01:44,841 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:44" (1/1) ... [2023-11-17 15:01:44,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:44" (1/1) ... [2023-11-17 15:01:44,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:01:44,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:01:44,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:01:44,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:01:44,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:44" (1/1) ... [2023-11-17 15:01:44,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:01:44,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:01:44,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 15:01:44,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 15:01:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-17 15:01:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-17 15:01:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-17 15:01:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-17 15:01:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:01:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:01:44,918 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 15:01:44,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:01:44,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:01:44,918 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 15:01:44,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:01:44,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:01:44,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:01:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:01:44,920 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:01:45,053 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:01:45,055 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:01:45,342 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:01:45,369 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:01:45,369 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 15:01:45,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:01:45 BoogieIcfgContainer [2023-11-17 15:01:45,372 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:01:45,374 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:01:45,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:01:45,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:01:45,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:01:44" (1/3) ... [2023-11-17 15:01:45,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1420945e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:01:45, skipping insertion in model container [2023-11-17 15:01:45,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:44" (2/3) ... [2023-11-17 15:01:45,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1420945e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:01:45, skipping insertion in model container [2023-11-17 15:01:45,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:01:45" (3/3) ... [2023-11-17 15:01:45,380 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2023-11-17 15:01:45,394 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:01:45,394 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 15:01:45,394 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:01:45,524 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 15:01:45,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 161 transitions, 336 flow [2023-11-17 15:01:45,616 INFO L124 PetriNetUnfolderBase]: 10/159 cut-off events. [2023-11-17 15:01:45,616 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:01:45,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 159 events. 10/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 383 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 121. Up to 3 conditions per place. [2023-11-17 15:01:45,622 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 161 transitions, 336 flow [2023-11-17 15:01:45,626 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 149 transitions, 307 flow [2023-11-17 15:01:45,628 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:01:45,639 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 149 transitions, 307 flow [2023-11-17 15:01:45,641 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 149 transitions, 307 flow [2023-11-17 15:01:45,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 149 transitions, 307 flow [2023-11-17 15:01:45,668 INFO L124 PetriNetUnfolderBase]: 10/149 cut-off events. [2023-11-17 15:01:45,668 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 15:01:45,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 149 events. 10/149 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 306 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 121. Up to 3 conditions per place. [2023-11-17 15:01:45,673 INFO L119 LiptonReduction]: Number of co-enabled transitions 7680 [2023-11-17 15:01:49,151 INFO L134 LiptonReduction]: Checked pairs total: 9634 [2023-11-17 15:01:49,151 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-11-17 15:01:49,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:01:49,169 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;@67b5183e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:01:49,169 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 15:01:49,173 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:01:49,173 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-11-17 15:01:49,173 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 15:01:49,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:49,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 15:01:49,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:49,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:49,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1641345548, now seen corresponding path program 1 times [2023-11-17 15:01:49,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:49,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15638413] [2023-11-17 15:01:49,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:49,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:49,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:49,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15638413] [2023-11-17 15:01:49,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15638413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:49,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:49,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:01:49,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905164910] [2023-11-17 15:01:49,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:49,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:01:49,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:49,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:01:49,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:01:49,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 307 [2023-11-17 15:01:49,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:49,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:49,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 307 [2023-11-17 15:01:49,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:49,636 INFO L124 PetriNetUnfolderBase]: 661/1082 cut-off events. [2023-11-17 15:01:49,636 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-17 15:01:49,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 1082 events. 661/1082 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3989 event pairs, 283 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 2034. Up to 687 conditions per place. [2023-11-17 15:01:49,644 INFO L140 encePairwiseOnDemand]: 302/307 looper letters, 50 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-11-17 15:01:49,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 227 flow [2023-11-17 15:01:49,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:01:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:01:49,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-11-17 15:01:49,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49294245385450597 [2023-11-17 15:01:49,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-11-17 15:01:49,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-11-17 15:01:49,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:49,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-11-17 15:01:49,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:49,672 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 15:01:49,673 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 15:01:49,674 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 73 flow. Second operand 3 states and 454 transitions. [2023-11-17 15:01:49,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 227 flow [2023-11-17 15:01:49,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 53 transitions, 219 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:01:49,679 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 85 flow [2023-11-17 15:01:49,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2023-11-17 15:01:49,683 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-11-17 15:01:49,683 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 85 flow [2023-11-17 15:01:49,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:49,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:49,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:49,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:01:49,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:49,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:49,684 INFO L85 PathProgramCache]: Analyzing trace with hash -151176544, now seen corresponding path program 1 times [2023-11-17 15:01:49,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:49,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723962258] [2023-11-17 15:01:49,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:49,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:49,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:49,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723962258] [2023-11-17 15:01:49,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723962258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:49,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:49,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:01:49,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749682911] [2023-11-17 15:01:49,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:49,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:01:49,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:49,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:01:49,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:01:49,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 307 [2023-11-17 15:01:49,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:49,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:49,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 307 [2023-11-17 15:01:49,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:49,917 INFO L124 PetriNetUnfolderBase]: 593/1022 cut-off events. [2023-11-17 15:01:49,917 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-11-17 15:01:49,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 1022 events. 593/1022 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4466 event pairs, 271 based on Foata normal form. 0/866 useless extension candidates. Maximal degree in co-relation 1916. Up to 877 conditions per place. [2023-11-17 15:01:49,923 INFO L140 encePairwiseOnDemand]: 304/307 looper letters, 45 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-11-17 15:01:49,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 222 flow [2023-11-17 15:01:49,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:01:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:01:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2023-11-17 15:01:49,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50814332247557 [2023-11-17 15:01:49,928 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2023-11-17 15:01:49,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2023-11-17 15:01:49,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:49,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2023-11-17 15:01:49,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:49,934 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 15:01:49,935 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 15:01:49,935 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 85 flow. Second operand 3 states and 468 transitions. [2023-11-17 15:01:49,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 222 flow [2023-11-17 15:01:49,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:01:49,938 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 97 flow [2023-11-17 15:01:49,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2023-11-17 15:01:49,939 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-11-17 15:01:49,940 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 97 flow [2023-11-17 15:01:49,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:49,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:49,941 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:49,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:01:49,942 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:49,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1722459461, now seen corresponding path program 1 times [2023-11-17 15:01:49,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:49,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278045056] [2023-11-17 15:01:49,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:49,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:50,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:50,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278045056] [2023-11-17 15:01:50,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278045056] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:01:50,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179913057] [2023-11-17 15:01:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:50,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:50,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:01:50,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:01:50,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 15:01:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:50,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 15:01:50,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:01:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:50,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:01:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:50,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179913057] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:01:50,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:01:50,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-17 15:01:50,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940777346] [2023-11-17 15:01:50,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:01:50,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:01:50,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:50,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:01:50,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:01:50,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 307 [2023-11-17 15:01:50,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 97 flow. Second operand has 10 states, 10 states have (on average 133.4) internal successors, (1334), 10 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:50,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:50,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 307 [2023-11-17 15:01:50,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:50,794 INFO L124 PetriNetUnfolderBase]: 1619/2654 cut-off events. [2023-11-17 15:01:50,794 INFO L125 PetriNetUnfolderBase]: For 839/839 co-relation queries the response was YES. [2023-11-17 15:01:50,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6125 conditions, 2654 events. 1619/2654 cut-off events. For 839/839 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 12086 event pairs, 246 based on Foata normal form. 82/2392 useless extension candidates. Maximal degree in co-relation 5686. Up to 795 conditions per place. [2023-11-17 15:01:50,808 INFO L140 encePairwiseOnDemand]: 299/307 looper letters, 155 selfloop transitions, 26 changer transitions 3/184 dead transitions. [2023-11-17 15:01:50,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 184 transitions, 855 flow [2023-11-17 15:01:50,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:01:50,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:01:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1747 transitions. [2023-11-17 15:01:50,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742128121606949 [2023-11-17 15:01:50,812 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1747 transitions. [2023-11-17 15:01:50,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1747 transitions. [2023-11-17 15:01:50,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:50,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1747 transitions. [2023-11-17 15:01:50,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 145.58333333333334) internal successors, (1747), 12 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:50,821 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 15:01:50,823 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 15:01:50,823 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 97 flow. Second operand 12 states and 1747 transitions. [2023-11-17 15:01:50,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 184 transitions, 855 flow [2023-11-17 15:01:50,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 184 transitions, 840 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:01:50,833 INFO L231 Difference]: Finished difference. Result has 54 places, 59 transitions, 309 flow [2023-11-17 15:01:50,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=309, PETRI_PLACES=54, PETRI_TRANSITIONS=59} [2023-11-17 15:01:50,834 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2023-11-17 15:01:50,835 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 59 transitions, 309 flow [2023-11-17 15:01:50,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 133.4) internal successors, (1334), 10 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:50,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:50,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:50,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 15:01:51,052 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 15:01:51,052 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:51,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash 549631282, now seen corresponding path program 1 times [2023-11-17 15:01:51,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:51,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100572123] [2023-11-17 15:01:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:51,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:51,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:51,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100572123] [2023-11-17 15:01:51,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100572123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:51,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:51,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:01:51,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682439838] [2023-11-17 15:01:51,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:51,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:01:51,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:51,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:01:51,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:01:51,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 307 [2023-11-17 15:01:51,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:51,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:51,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 307 [2023-11-17 15:01:51,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:51,336 INFO L124 PetriNetUnfolderBase]: 512/977 cut-off events. [2023-11-17 15:01:51,336 INFO L125 PetriNetUnfolderBase]: For 557/557 co-relation queries the response was YES. [2023-11-17 15:01:51,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 977 events. 512/977 cut-off events. For 557/557 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4143 event pairs, 98 based on Foata normal form. 0/889 useless extension candidates. Maximal degree in co-relation 2360. Up to 670 conditions per place. [2023-11-17 15:01:51,342 INFO L140 encePairwiseOnDemand]: 302/307 looper letters, 42 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-11-17 15:01:51,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 342 flow [2023-11-17 15:01:51,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:01:51,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:01:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-11-17 15:01:51,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49728555917481 [2023-11-17 15:01:51,344 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-11-17 15:01:51,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-11-17 15:01:51,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:51,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-11-17 15:01:51,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:51,348 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 15:01:51,349 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 15:01:51,349 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 309 flow. Second operand 3 states and 458 transitions. [2023-11-17 15:01:51,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 342 flow [2023-11-17 15:01:51,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 321 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-17 15:01:51,356 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 216 flow [2023-11-17 15:01:51,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2023-11-17 15:01:51,359 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-11-17 15:01:51,359 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 216 flow [2023-11-17 15:01:51,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:51,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:51,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:51,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:01:51,360 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:51,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:51,361 INFO L85 PathProgramCache]: Analyzing trace with hash -481044251, now seen corresponding path program 1 times [2023-11-17 15:01:51,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:51,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115433226] [2023-11-17 15:01:51,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:51,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:51,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:51,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115433226] [2023-11-17 15:01:51,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115433226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:51,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:51,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:01:51,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025136623] [2023-11-17 15:01:51,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:51,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:01:51,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:51,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:01:51,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:01:51,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 307 [2023-11-17 15:01:51,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:51,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:51,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 307 [2023-11-17 15:01:51,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:51,544 INFO L124 PetriNetUnfolderBase]: 624/1145 cut-off events. [2023-11-17 15:01:51,544 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2023-11-17 15:01:51,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 1145 events. 624/1145 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4684 event pairs, 391 based on Foata normal form. 24/1169 useless extension candidates. Maximal degree in co-relation 2382. Up to 849 conditions per place. [2023-11-17 15:01:51,550 INFO L140 encePairwiseOnDemand]: 301/307 looper letters, 56 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-11-17 15:01:51,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 383 flow [2023-11-17 15:01:51,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:01:51,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:01:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-11-17 15:01:51,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48859934853420195 [2023-11-17 15:01:51,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-11-17 15:01:51,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-11-17 15:01:51,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:51,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-11-17 15:01:51,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:51,555 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 15:01:51,555 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 15:01:51,555 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 216 flow. Second operand 3 states and 450 transitions. [2023-11-17 15:01:51,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 383 flow [2023-11-17 15:01:51,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:01:51,559 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 248 flow [2023-11-17 15:01:51,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-11-17 15:01:51,561 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-11-17 15:01:51,562 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 248 flow [2023-11-17 15:01:51,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:51,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:51,565 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 15:01:51,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:01:51,565 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:51,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:51,566 INFO L85 PathProgramCache]: Analyzing trace with hash 677493201, now seen corresponding path program 1 times [2023-11-17 15:01:51,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:51,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89368770] [2023-11-17 15:01:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:51,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:52,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:52,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:52,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89368770] [2023-11-17 15:01:52,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89368770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:52,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:52,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:01:52,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625432224] [2023-11-17 15:01:52,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:52,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:01:52,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:52,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:01:52,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:01:52,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 307 [2023-11-17 15:01:52,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 248 flow. Second operand has 11 states, 11 states have (on average 107.81818181818181) internal successors, (1186), 11 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:52,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:52,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 307 [2023-11-17 15:01:52,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:52,641 INFO L124 PetriNetUnfolderBase]: 808/1544 cut-off events. [2023-11-17 15:01:52,641 INFO L125 PetriNetUnfolderBase]: For 1164/1164 co-relation queries the response was YES. [2023-11-17 15:01:52,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3961 conditions, 1544 events. 808/1544 cut-off events. For 1164/1164 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7413 event pairs, 255 based on Foata normal form. 0/1526 useless extension candidates. Maximal degree in co-relation 2318. Up to 882 conditions per place. [2023-11-17 15:01:52,648 INFO L140 encePairwiseOnDemand]: 297/307 looper letters, 79 selfloop transitions, 11 changer transitions 14/113 dead transitions. [2023-11-17 15:01:52,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 113 transitions, 670 flow [2023-11-17 15:01:52,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:01:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:01:52,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1045 transitions. [2023-11-17 15:01:52,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782120883098082 [2023-11-17 15:01:52,652 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1045 transitions. [2023-11-17 15:01:52,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1045 transitions. [2023-11-17 15:01:52,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:52,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1045 transitions. [2023-11-17 15:01:52,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.11111111111111) internal successors, (1045), 9 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:52,658 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 15:01:52,660 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 15:01:52,660 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 248 flow. Second operand 9 states and 1045 transitions. [2023-11-17 15:01:52,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 113 transitions, 670 flow [2023-11-17 15:01:52,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 113 transitions, 632 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-17 15:01:52,665 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 315 flow [2023-11-17 15:01:52,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=315, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-11-17 15:01:52,668 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2023-11-17 15:01:52,668 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 315 flow [2023-11-17 15:01:52,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.81818181818181) internal successors, (1186), 11 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:52,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:52,668 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 15:01:52,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:01:52,669 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:52,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:52,669 INFO L85 PathProgramCache]: Analyzing trace with hash 892600237, now seen corresponding path program 2 times [2023-11-17 15:01:52,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:52,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646087163] [2023-11-17 15:01:52,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:52,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:53,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:53,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646087163] [2023-11-17 15:01:53,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646087163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:53,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:53,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:01:53,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298337484] [2023-11-17 15:01:53,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:53,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:01:53,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:53,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:01:53,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:01:53,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 307 [2023-11-17 15:01:53,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 315 flow. Second operand has 11 states, 11 states have (on average 107.81818181818181) internal successors, (1186), 11 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:53,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:53,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 307 [2023-11-17 15:01:53,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:53,663 INFO L124 PetriNetUnfolderBase]: 1026/1951 cut-off events. [2023-11-17 15:01:53,664 INFO L125 PetriNetUnfolderBase]: For 1276/1276 co-relation queries the response was YES. [2023-11-17 15:01:53,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5302 conditions, 1951 events. 1026/1951 cut-off events. For 1276/1276 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9736 event pairs, 341 based on Foata normal form. 0/1927 useless extension candidates. Maximal degree in co-relation 4001. Up to 831 conditions per place. [2023-11-17 15:01:53,675 INFO L140 encePairwiseOnDemand]: 298/307 looper letters, 79 selfloop transitions, 16 changer transitions 14/118 dead transitions. [2023-11-17 15:01:53,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 118 transitions, 736 flow [2023-11-17 15:01:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:01:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:01:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1045 transitions. [2023-11-17 15:01:53,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782120883098082 [2023-11-17 15:01:53,678 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1045 transitions. [2023-11-17 15:01:53,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1045 transitions. [2023-11-17 15:01:53,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:53,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1045 transitions. [2023-11-17 15:01:53,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.11111111111111) internal successors, (1045), 9 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:53,684 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 15:01:53,685 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 15:01:53,685 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 315 flow. Second operand 9 states and 1045 transitions. [2023-11-17 15:01:53,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 118 transitions, 736 flow [2023-11-17 15:01:53,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 118 transitions, 736 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:01:53,691 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 417 flow [2023-11-17 15:01:53,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=417, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2023-11-17 15:01:53,692 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 41 predicate places. [2023-11-17 15:01:53,692 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 417 flow [2023-11-17 15:01:53,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.81818181818181) internal successors, (1186), 11 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:53,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:53,693 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:53,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:01:53,693 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:53,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:53,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1421864657, now seen corresponding path program 1 times [2023-11-17 15:01:53,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:53,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146296811] [2023-11-17 15:01:53,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:53,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:53,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:53,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146296811] [2023-11-17 15:01:53,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146296811] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:01:53,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336606573] [2023-11-17 15:01:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:53,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:53,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:01:53,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:01:53,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 15:01:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:53,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:01:53,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:01:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:01:53,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:01:53,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336606573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:53,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:01:53,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-11-17 15:01:53,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003890662] [2023-11-17 15:01:53,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:53,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:01:53,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:53,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:01:53,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:01:53,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 307 [2023-11-17 15:01:53,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 417 flow. Second operand has 6 states, 6 states have (on average 130.83333333333334) internal successors, (785), 6 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:53,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:53,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 307 [2023-11-17 15:01:53,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:54,216 INFO L124 PetriNetUnfolderBase]: 1110/2059 cut-off events. [2023-11-17 15:01:54,216 INFO L125 PetriNetUnfolderBase]: For 2061/2061 co-relation queries the response was YES. [2023-11-17 15:01:54,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5937 conditions, 2059 events. 1110/2059 cut-off events. For 2061/2061 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9819 event pairs, 421 based on Foata normal form. 34/2073 useless extension candidates. Maximal degree in co-relation 4731. Up to 781 conditions per place. [2023-11-17 15:01:54,229 INFO L140 encePairwiseOnDemand]: 299/307 looper letters, 99 selfloop transitions, 16 changer transitions 0/115 dead transitions. [2023-11-17 15:01:54,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 115 transitions, 847 flow [2023-11-17 15:01:54,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:01:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:01:54,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 846 transitions. [2023-11-17 15:01:54,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592833876221498 [2023-11-17 15:01:54,232 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 846 transitions. [2023-11-17 15:01:54,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 846 transitions. [2023-11-17 15:01:54,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:54,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 846 transitions. [2023-11-17 15:01:54,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:54,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 307.0) internal successors, (2149), 7 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:54,237 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 307.0) internal successors, (2149), 7 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:54,237 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 417 flow. Second operand 6 states and 846 transitions. [2023-11-17 15:01:54,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 115 transitions, 847 flow [2023-11-17 15:01:54,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 115 transitions, 820 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-17 15:01:54,246 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 499 flow [2023-11-17 15:01:54,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=499, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2023-11-17 15:01:54,247 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 45 predicate places. [2023-11-17 15:01:54,247 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 499 flow [2023-11-17 15:01:54,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.83333333333334) internal successors, (785), 6 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:54,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:54,247 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-11-17 15:01:54,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 15:01:54,452 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,SelfDestructingSolverStorable7 [2023-11-17 15:01:54,453 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:54,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:54,454 INFO L85 PathProgramCache]: Analyzing trace with hash -379955611, now seen corresponding path program 2 times [2023-11-17 15:01:54,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:54,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523713806] [2023-11-17 15:01:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:54,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:54,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:54,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523713806] [2023-11-17 15:01:54,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523713806] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:01:54,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006976896] [2023-11-17 15:01:54,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:01:54,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:54,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:01:54,571 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:01:54,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 15:01:54,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:01:54,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:01:54,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:01:54,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:01:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:54,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:01:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:54,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006976896] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:01:54,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:01:54,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-17 15:01:54,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672233165] [2023-11-17 15:01:54,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:01:54,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 15:01:54,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:54,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 15:01:54,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:01:54,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 307 [2023-11-17 15:01:54,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 499 flow. Second operand has 18 states, 18 states have (on average 133.44444444444446) internal successors, (2402), 18 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:54,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:54,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 307 [2023-11-17 15:01:54,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:55,416 INFO L124 PetriNetUnfolderBase]: 1558/2883 cut-off events. [2023-11-17 15:01:55,416 INFO L125 PetriNetUnfolderBase]: For 4106/4106 co-relation queries the response was YES. [2023-11-17 15:01:55,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8718 conditions, 2883 events. 1558/2883 cut-off events. For 4106/4106 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 12991 event pairs, 361 based on Foata normal form. 32/2895 useless extension candidates. Maximal degree in co-relation 7739. Up to 936 conditions per place. [2023-11-17 15:01:55,438 INFO L140 encePairwiseOnDemand]: 301/307 looper letters, 209 selfloop transitions, 31 changer transitions 6/246 dead transitions. [2023-11-17 15:01:55,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 246 transitions, 1737 flow [2023-11-17 15:01:55,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 15:01:55,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 15:01:55,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2433 transitions. [2023-11-17 15:01:55,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661812607779268 [2023-11-17 15:01:55,444 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2433 transitions. [2023-11-17 15:01:55,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2433 transitions. [2023-11-17 15:01:55,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:55,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2433 transitions. [2023-11-17 15:01:55,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 143.11764705882354) internal successors, (2433), 17 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:55,457 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 15:01:55,458 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 15:01:55,458 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 499 flow. Second operand 17 states and 2433 transitions. [2023-11-17 15:01:55,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 246 transitions, 1737 flow [2023-11-17 15:01:55,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 246 transitions, 1713 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-17 15:01:55,534 INFO L231 Difference]: Finished difference. Result has 99 places, 85 transitions, 729 flow [2023-11-17 15:01:55,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=729, PETRI_PLACES=99, PETRI_TRANSITIONS=85} [2023-11-17 15:01:55,535 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 65 predicate places. [2023-11-17 15:01:55,535 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 85 transitions, 729 flow [2023-11-17 15:01:55,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 133.44444444444446) internal successors, (2402), 18 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:55,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:55,536 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:55,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 15:01:55,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:55,737 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:55,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:55,738 INFO L85 PathProgramCache]: Analyzing trace with hash -50301246, now seen corresponding path program 3 times [2023-11-17 15:01:55,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:55,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462392667] [2023-11-17 15:01:55,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:55,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:56,327 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:01:56,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:56,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462392667] [2023-11-17 15:01:56,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462392667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:56,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:56,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:01:56,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133402715] [2023-11-17 15:01:56,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:56,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:01:56,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:56,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:01:56,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:01:56,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 307 [2023-11-17 15:01:56,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 729 flow. Second operand has 15 states, 15 states have (on average 91.86666666666666) internal successors, (1378), 15 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:56,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:56,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 307 [2023-11-17 15:01:56,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:57,956 INFO L124 PetriNetUnfolderBase]: 2528/4662 cut-off events. [2023-11-17 15:01:57,957 INFO L125 PetriNetUnfolderBase]: For 7020/7020 co-relation queries the response was YES. [2023-11-17 15:01:57,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14888 conditions, 4662 events. 2528/4662 cut-off events. For 7020/7020 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 23614 event pairs, 696 based on Foata normal form. 0/4641 useless extension candidates. Maximal degree in co-relation 13708. Up to 1386 conditions per place. [2023-11-17 15:01:57,997 INFO L140 encePairwiseOnDemand]: 289/307 looper letters, 136 selfloop transitions, 109 changer transitions 1/246 dead transitions. [2023-11-17 15:01:57,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 246 transitions, 2163 flow [2023-11-17 15:01:57,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 15:01:57,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 15:01:58,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2298 transitions. [2023-11-17 15:01:58,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118892508143323 [2023-11-17 15:01:58,004 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2298 transitions. [2023-11-17 15:01:58,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2298 transitions. [2023-11-17 15:01:58,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:58,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2298 transitions. [2023-11-17 15:01:58,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 95.75) internal successors, (2298), 24 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:58,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 307.0) internal successors, (7675), 25 states have internal predecessors, (7675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:58,029 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 307.0) internal successors, (7675), 25 states have internal predecessors, (7675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:58,029 INFO L175 Difference]: Start difference. First operand has 99 places, 85 transitions, 729 flow. Second operand 24 states and 2298 transitions. [2023-11-17 15:01:58,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 246 transitions, 2163 flow [2023-11-17 15:01:58,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 246 transitions, 1933 flow, removed 76 selfloop flow, removed 8 redundant places. [2023-11-17 15:01:58,068 INFO L231 Difference]: Finished difference. Result has 121 places, 160 transitions, 1493 flow [2023-11-17 15:01:58,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1493, PETRI_PLACES=121, PETRI_TRANSITIONS=160} [2023-11-17 15:01:58,069 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 87 predicate places. [2023-11-17 15:01:58,069 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 160 transitions, 1493 flow [2023-11-17 15:01:58,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 91.86666666666666) internal successors, (1378), 15 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:58,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:58,070 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:58,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:01:58,070 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:58,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:58,071 INFO L85 PathProgramCache]: Analyzing trace with hash -898314002, now seen corresponding path program 4 times [2023-11-17 15:01:58,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:58,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756764036] [2023-11-17 15:01:58,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:58,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:01:58,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:58,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756764036] [2023-11-17 15:01:58,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756764036] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:01:58,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759588893] [2023-11-17 15:01:58,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:01:58,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:58,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:01:58,690 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:01:58,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 15:01:58,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:01:58,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:01:58,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-17 15:01:58,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:01:59,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 15:01:59,157 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 30 treesize of output 14 [2023-11-17 15:01:59,481 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 56 treesize of output 32 [2023-11-17 15:01:59,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:59,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:01:59,940 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 278 treesize of output 262 [2023-11-17 15:02:00,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:02:00,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759588893] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:02:00,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:02:00,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 46 [2023-11-17 15:02:00,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315741792] [2023-11-17 15:02:00,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:02:00,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-17 15:02:00,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:02:00,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-17 15:02:00,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=2099, Unknown=0, NotChecked=0, Total=2256 [2023-11-17 15:02:00,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 307 [2023-11-17 15:02:00,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 160 transitions, 1493 flow. Second operand has 48 states, 48 states have (on average 86.75) internal successors, (4164), 48 states have internal predecessors, (4164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:00,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:02:00,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 307 [2023-11-17 15:02:00,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:02:07,148 INFO L124 PetriNetUnfolderBase]: 3058/5688 cut-off events. [2023-11-17 15:02:07,148 INFO L125 PetriNetUnfolderBase]: For 10069/10069 co-relation queries the response was YES. [2023-11-17 15:02:07,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19648 conditions, 5688 events. 3058/5688 cut-off events. For 10069/10069 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 30826 event pairs, 397 based on Foata normal form. 44/5707 useless extension candidates. Maximal degree in co-relation 15181. Up to 1191 conditions per place. [2023-11-17 15:02:07,182 INFO L140 encePairwiseOnDemand]: 289/307 looper letters, 322 selfloop transitions, 205 changer transitions 15/542 dead transitions. [2023-11-17 15:02:07,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 542 transitions, 4191 flow [2023-11-17 15:02:07,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-11-17 15:02:07,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-11-17 15:02:07,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 6360 transitions. [2023-11-17 15:02:07,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2959516053978595 [2023-11-17 15:02:07,198 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 6360 transitions. [2023-11-17 15:02:07,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 6360 transitions. [2023-11-17 15:02:07,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:02:07,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 6360 transitions. [2023-11-17 15:02:07,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 90.85714285714286) internal successors, (6360), 70 states have internal predecessors, (6360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:07,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 307.0) internal successors, (21797), 71 states have internal predecessors, (21797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:07,249 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 307.0) internal successors, (21797), 71 states have internal predecessors, (21797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:07,250 INFO L175 Difference]: Start difference. First operand has 121 places, 160 transitions, 1493 flow. Second operand 70 states and 6360 transitions. [2023-11-17 15:02:07,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 542 transitions, 4191 flow [2023-11-17 15:02:07,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 542 transitions, 4090 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-11-17 15:02:07,305 INFO L231 Difference]: Finished difference. Result has 193 places, 255 transitions, 2740 flow [2023-11-17 15:02:07,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=2740, PETRI_PLACES=193, PETRI_TRANSITIONS=255} [2023-11-17 15:02:07,306 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 159 predicate places. [2023-11-17 15:02:07,306 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 255 transitions, 2740 flow [2023-11-17 15:02:07,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 86.75) internal successors, (4164), 48 states have internal predecessors, (4164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:07,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:02:07,307 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:02:07,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 15:02:07,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:02:07,513 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:02:07,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:02:07,514 INFO L85 PathProgramCache]: Analyzing trace with hash 891083508, now seen corresponding path program 1 times [2023-11-17 15:02:07,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:02:07,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220653131] [2023-11-17 15:02:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:02:07,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:02:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:02:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:02:09,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:02:09,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220653131] [2023-11-17 15:02:09,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220653131] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:02:09,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505175585] [2023-11-17 15:02:09,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:02:09,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:02:09,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:02:09,481 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:02:09,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 15:02:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:02:09,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-17 15:02:09,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:02:09,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 15:02:10,175 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 30 treesize of output 14 [2023-11-17 15:02:10,795 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 56 treesize of output 32 [2023-11-17 15:02:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:02:10,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:02:12,530 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 57 treesize of output 48 [2023-11-17 15:02:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:02:12,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505175585] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:02:12,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:02:12,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 20] total 62 [2023-11-17 15:02:12,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877335270] [2023-11-17 15:02:12,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:02:12,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-17 15:02:12,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:02:12,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-17 15:02:12,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=454, Invalid=3578, Unknown=0, NotChecked=0, Total=4032 [2023-11-17 15:02:12,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 307 [2023-11-17 15:02:12,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 255 transitions, 2740 flow. Second operand has 64 states, 64 states have (on average 86.6875) internal successors, (5548), 64 states have internal predecessors, (5548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:12,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:02:12,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 307 [2023-11-17 15:02:12,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:02:22,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:02:33,189 INFO L124 PetriNetUnfolderBase]: 4580/8584 cut-off events. [2023-11-17 15:02:33,189 INFO L125 PetriNetUnfolderBase]: For 18744/18744 co-relation queries the response was YES. [2023-11-17 15:02:33,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32126 conditions, 8584 events. 4580/8584 cut-off events. For 18744/18744 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 52117 event pairs, 1174 based on Foata normal form. 80/8637 useless extension candidates. Maximal degree in co-relation 28386. Up to 3771 conditions per place. [2023-11-17 15:02:33,243 INFO L140 encePairwiseOnDemand]: 289/307 looper letters, 462 selfloop transitions, 239 changer transitions 152/853 dead transitions. [2023-11-17 15:02:33,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 853 transitions, 7523 flow [2023-11-17 15:02:33,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-11-17 15:02:33,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2023-11-17 15:02:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 9339 transitions. [2023-11-17 15:02:33,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2953417032984409 [2023-11-17 15:02:33,257 INFO L72 ComplementDD]: Start complementDD. Operand 103 states and 9339 transitions. [2023-11-17 15:02:33,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 9339 transitions. [2023-11-17 15:02:33,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:02:33,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 103 states and 9339 transitions. [2023-11-17 15:02:33,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 104 states, 103 states have (on average 90.66990291262135) internal successors, (9339), 103 states have internal predecessors, (9339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:33,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 104 states, 104 states have (on average 307.0) internal successors, (31928), 104 states have internal predecessors, (31928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:33,308 INFO L81 ComplementDD]: Finished complementDD. Result has 104 states, 104 states have (on average 307.0) internal successors, (31928), 104 states have internal predecessors, (31928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:33,309 INFO L175 Difference]: Start difference. First operand has 193 places, 255 transitions, 2740 flow. Second operand 103 states and 9339 transitions. [2023-11-17 15:02:33,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 853 transitions, 7523 flow [2023-11-17 15:02:33,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 853 transitions, 6811 flow, removed 284 selfloop flow, removed 13 redundant places. [2023-11-17 15:02:33,447 INFO L231 Difference]: Finished difference. Result has 313 places, 441 transitions, 4807 flow [2023-11-17 15:02:33,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=2370, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=103, PETRI_FLOW=4807, PETRI_PLACES=313, PETRI_TRANSITIONS=441} [2023-11-17 15:02:33,448 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 279 predicate places. [2023-11-17 15:02:33,448 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 441 transitions, 4807 flow [2023-11-17 15:02:33,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 86.6875) internal successors, (5548), 64 states have internal predecessors, (5548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:33,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:02:33,449 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:02:33,455 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 15:02:33,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-17 15:02:33,655 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:02:33,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:02:33,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1281856736, now seen corresponding path program 2 times [2023-11-17 15:02:33,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:02:33,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704576365] [2023-11-17 15:02:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:02:33,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:02:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:02:35,288 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:02:35,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:02:35,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704576365] [2023-11-17 15:02:35,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704576365] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:02:35,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801958423] [2023-11-17 15:02:35,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:02:35,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:02:35,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:02:35,290 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:02:35,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 15:02:35,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:02:35,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:02:35,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 79 conjunts are in the unsatisfiable core [2023-11-17 15:02:35,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:02:35,485 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-17 15:02:35,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-17 15:02:35,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 15:02:35,850 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 23 treesize of output 16 [2023-11-17 15:02:36,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:02:36,146 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 38 treesize of output 14 [2023-11-17 15:02:36,643 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 56 treesize of output 32 [2023-11-17 15:02:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:02:36,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:02:38,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:02:38,109 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 29 treesize of output 30 [2023-11-17 15:02:38,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:02:38,118 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 49 treesize of output 52 [2023-11-17 15:02:38,121 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 28 treesize of output 22 [2023-11-17 15:02:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:02:38,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801958423] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:02:38,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:02:38,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 20] total 59 [2023-11-17 15:02:38,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830433979] [2023-11-17 15:02:38,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:02:38,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-17 15:02:38,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:02:38,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-17 15:02:38,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=3374, Unknown=6, NotChecked=0, Total=3660 [2023-11-17 15:02:38,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 307 [2023-11-17 15:02:38,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 441 transitions, 4807 flow. Second operand has 61 states, 61 states have (on average 86.77049180327869) internal successors, (5293), 61 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:38,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:02:38,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 307 [2023-11-17 15:02:38,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:12,965 INFO L124 PetriNetUnfolderBase]: 8639/16289 cut-off events. [2023-11-17 15:03:12,965 INFO L125 PetriNetUnfolderBase]: For 46171/46171 co-relation queries the response was YES. [2023-11-17 15:03:13,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64178 conditions, 16289 events. 8639/16289 cut-off events. For 46171/46171 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 109564 event pairs, 721 based on Foata normal form. 216/16456 useless extension candidates. Maximal degree in co-relation 62673. Up to 2977 conditions per place. [2023-11-17 15:03:13,095 INFO L140 encePairwiseOnDemand]: 289/307 looper letters, 511 selfloop transitions, 880 changer transitions 189/1580 dead transitions. [2023-11-17 15:03:13,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 1580 transitions, 15717 flow [2023-11-17 15:03:13,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2023-11-17 15:03:13,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2023-11-17 15:03:13,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 15150 transitions. [2023-11-17 15:03:13,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29374127501163333 [2023-11-17 15:03:13,115 INFO L72 ComplementDD]: Start complementDD. Operand 168 states and 15150 transitions. [2023-11-17 15:03:13,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 168 states and 15150 transitions. [2023-11-17 15:03:13,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:13,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 168 states and 15150 transitions. [2023-11-17 15:03:13,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 169 states, 168 states have (on average 90.17857142857143) internal successors, (15150), 168 states have internal predecessors, (15150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:13,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 169 states, 169 states have (on average 307.0) internal successors, (51883), 169 states have internal predecessors, (51883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:13,185 INFO L81 ComplementDD]: Finished complementDD. Result has 169 states, 169 states have (on average 307.0) internal successors, (51883), 169 states have internal predecessors, (51883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:13,186 INFO L175 Difference]: Start difference. First operand has 313 places, 441 transitions, 4807 flow. Second operand 168 states and 15150 transitions. [2023-11-17 15:03:13,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 1580 transitions, 15717 flow [2023-11-17 15:03:13,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 1580 transitions, 15397 flow, removed 127 selfloop flow, removed 11 redundant places. [2023-11-17 15:03:13,529 INFO L231 Difference]: Finished difference. Result has 475 places, 956 transitions, 12459 flow [2023-11-17 15:03:13,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=4498, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=378, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=168, PETRI_FLOW=12459, PETRI_PLACES=475, PETRI_TRANSITIONS=956} [2023-11-17 15:03:13,530 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 441 predicate places. [2023-11-17 15:03:13,530 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 956 transitions, 12459 flow [2023-11-17 15:03:13,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 86.77049180327869) internal successors, (5293), 61 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:13,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:13,532 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:13,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 15:03:13,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:13,738 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:03:13,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:13,738 INFO L85 PathProgramCache]: Analyzing trace with hash 810746831, now seen corresponding path program 2 times [2023-11-17 15:03:13,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:13,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294555545] [2023-11-17 15:03:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:13,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:03:13,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:13,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294555545] [2023-11-17 15:03:13,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294555545] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:13,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891491671] [2023-11-17 15:03:13,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:03:13,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:13,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:13,984 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:13,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 15:03:14,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:03:14,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:03:14,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 15:03:14,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:14,401 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:03:14,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:03:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:03:14,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891491671] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:03:14,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:03:14,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-17 15:03:14,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566268520] [2023-11-17 15:03:14,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:03:14,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 15:03:14,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:14,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 15:03:14,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-11-17 15:03:14,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 307 [2023-11-17 15:03:14,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 956 transitions, 12459 flow. Second operand has 20 states, 20 states have (on average 131.25) internal successors, (2625), 20 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:14,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:14,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 307 [2023-11-17 15:03:14,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:18,695 INFO L124 PetriNetUnfolderBase]: 9605/18179 cut-off events. [2023-11-17 15:03:18,695 INFO L125 PetriNetUnfolderBase]: For 60152/60152 co-relation queries the response was YES. [2023-11-17 15:03:18,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79318 conditions, 18179 events. 9605/18179 cut-off events. For 60152/60152 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 125374 event pairs, 2500 based on Foata normal form. 52/18206 useless extension candidates. Maximal degree in co-relation 75765. Up to 5022 conditions per place. [2023-11-17 15:03:18,836 INFO L140 encePairwiseOnDemand]: 299/307 looper letters, 895 selfloop transitions, 457 changer transitions 12/1364 dead transitions. [2023-11-17 15:03:18,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 1364 transitions, 19268 flow [2023-11-17 15:03:18,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 15:03:18,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 15:03:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3147 transitions. [2023-11-17 15:03:18,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44568757966293726 [2023-11-17 15:03:18,840 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3147 transitions. [2023-11-17 15:03:18,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3147 transitions. [2023-11-17 15:03:18,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:18,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3147 transitions. [2023-11-17 15:03:18,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 136.82608695652175) internal successors, (3147), 23 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:18,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 307.0) internal successors, (7368), 24 states have internal predecessors, (7368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:18,850 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 307.0) internal successors, (7368), 24 states have internal predecessors, (7368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:18,850 INFO L175 Difference]: Start difference. First operand has 475 places, 956 transitions, 12459 flow. Second operand 23 states and 3147 transitions. [2023-11-17 15:03:18,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 1364 transitions, 19268 flow [2023-11-17 15:03:19,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 1364 transitions, 18032 flow, removed 336 selfloop flow, removed 36 redundant places. [2023-11-17 15:03:19,564 INFO L231 Difference]: Finished difference. Result has 465 places, 1025 transitions, 13789 flow [2023-11-17 15:03:19,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=11325, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=940, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=372, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=13789, PETRI_PLACES=465, PETRI_TRANSITIONS=1025} [2023-11-17 15:03:19,566 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 431 predicate places. [2023-11-17 15:03:19,566 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 1025 transitions, 13789 flow [2023-11-17 15:03:19,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 131.25) internal successors, (2625), 20 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:19,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:19,567 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:19,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-17 15:03:19,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:19,772 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:03:19,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:19,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1177495561, now seen corresponding path program 3 times [2023-11-17 15:03:19,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:19,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180282059] [2023-11-17 15:03:19,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:19,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:23,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:23,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180282059] [2023-11-17 15:03:23,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180282059] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:23,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773452404] [2023-11-17 15:03:23,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:03:23,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:23,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:23,549 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:23,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 15:03:23,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 15:03:23,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:03:23,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-17 15:03:23,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:23,863 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-17 15:03:23,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-11-17 15:03:23,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2023-11-17 15:03:23,920 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 15 treesize of output 10 [2023-11-17 15:03:24,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-11-17 15:03:24,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 56 [2023-11-17 15:03:24,520 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:03:24,521 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2023-11-17 15:03:24,522 WARN L561 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2023-11-17 15:03:33,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 121 [2023-11-17 15:03:34,017 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:03:34,018 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2023-11-17 15:03:34,019 WARN L561 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2023-11-17 15:03:34,021 WARN L561 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2023-11-17 15:03:34,077 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:03:34,077 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2023-11-17 15:05:34,969 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 674 treesize of output 600 [2023-11-17 15:05:35,107 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:05:35,108 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 297 [2023-11-17 15:05:35,117 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:05:35,117 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2023-11-17 15:05:35,131 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:05:35,132 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2023-11-17 15:05:35,144 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:05:35,145 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2023-11-17 15:05:35,151 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:05:35,152 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2023-11-17 15:05:35,167 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:05:35,167 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2023-11-17 15:05:35,188 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:05:35,189 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2023-11-17 15:05:35,216 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:05:35,217 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2023-11-17 15:05:35,235 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:05:35,236 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 295 [2023-11-17 15:05:35,291 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:05:35,292 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2023-11-17 15:05:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 33 refuted. 12 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:05:38,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:07:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 32 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:07:32,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773452404] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:07:32,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:07:32,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 22] total 75 [2023-11-17 15:07:32,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809884806] [2023-11-17 15:07:32,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:07:32,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-11-17 15:07:32,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:07:32,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-11-17 15:07:32,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=573, Invalid=5167, Unknown=112, NotChecked=0, Total=5852 [2023-11-17 15:07:32,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 307 [2023-11-17 15:07:32,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 1025 transitions, 13789 flow. Second operand has 77 states, 77 states have (on average 86.98701298701299) internal successors, (6698), 77 states have internal predecessors, (6698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:07:32,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:07:32,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 307 [2023-11-17 15:07:32,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:07:35,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-17 15:07:52,598 WARN L293 SmtUtils]: Spent 11.91s on a formula simplification. DAG size of input: 217 DAG size of output: 224 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-17 15:07:54,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:07:56,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:07:58,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:00,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:05,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:08,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:09,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:12,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:14,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:15,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:16,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:19,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:21,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:23,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:26,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:29,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:31,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:33,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:35,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:37,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:39,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:08:40,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:09:02,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:09:07,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:09:10,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:09:23,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:09:25,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:09:27,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:09:47,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:09:53,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:09:55,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:10:16,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:10:18,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:10:21,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:10:23,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:10:25,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:10:27,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:10:29,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:10:32,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-17 15:10:34,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:10:36,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:10:38,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:10:40,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:10:42,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:10:44,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-11-17 15:10:50,259 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 15:10:50,260 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 15:10:50,795 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 [0, 1] [2023-11-17 15:10:51,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 15:10:51,461 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-11-17 15:10:51,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 [2023-11-17 15:10:51,487 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-17 15:10:51,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 15:10:51,487 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-11-17 15:10:51,489 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2023-11-17 15:10:51,489 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-17 15:10:51,489 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-17 15:10:51,489 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-17 15:10:51,489 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-17 15:10:51,489 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 1, 1, 1, 1] [2023-11-17 15:10:51,494 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:10:51,494 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:10:51,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:10:51 BasicIcfg [2023-11-17 15:10:51,497 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:10:51,498 INFO L158 Benchmark]: Toolchain (without parser) took 547395.07ms. Allocated memory was 181.4MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 140.8MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 557.0MB. Max. memory is 8.0GB. [2023-11-17 15:10:51,498 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 181.4MB. Free memory was 139.2MB in the beginning and 139.1MB in the end (delta: 90.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:10:51,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 626.79ms. Allocated memory is still 181.4MB. Free memory was 140.8MB in the beginning and 111.1MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2023-11-17 15:10:51,498 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.29ms. Allocated memory is still 181.4MB. Free memory was 111.1MB in the beginning and 108.6MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 15:10:51,499 INFO L158 Benchmark]: Boogie Preprocessor took 37.27ms. Allocated memory is still 181.4MB. Free memory was 108.6MB in the beginning and 106.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:10:51,499 INFO L158 Benchmark]: RCFGBuilder took 518.27ms. Allocated memory is still 181.4MB. Free memory was 106.5MB in the beginning and 88.0MB in the end (delta: 18.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-11-17 15:10:51,499 INFO L158 Benchmark]: TraceAbstraction took 546123.58ms. Allocated memory was 181.4MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 87.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 503.5MB. Max. memory is 8.0GB. [2023-11-17 15:10:51,500 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 181.4MB. Free memory was 139.2MB in the beginning and 139.1MB in the end (delta: 90.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 626.79ms. Allocated memory is still 181.4MB. Free memory was 140.8MB in the beginning and 111.1MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 75.29ms. Allocated memory is still 181.4MB. Free memory was 111.1MB in the beginning and 108.6MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.27ms. Allocated memory is still 181.4MB. Free memory was 108.6MB in the beginning and 106.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 518.27ms. Allocated memory is still 181.4MB. Free memory was 106.5MB in the beginning and 88.0MB in the end (delta: 18.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 546123.58ms. Allocated memory was 181.4MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 87.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 503.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 146 PlacesBefore, 34 PlacesAfterwards, 149 TransitionsBefore, 32 TransitionsAfterwards, 7680 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 92 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 5 ChoiceCompositions, 146 TotalNumberOfCompositions, 9634 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8024, independent: 7881, independent conditional: 0, independent unconditional: 7881, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5585, independent: 5515, independent conditional: 0, independent unconditional: 5515, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5585, independent: 5503, independent conditional: 0, independent unconditional: 5503, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 82, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 170, independent: 28, independent conditional: 0, independent unconditional: 28, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8024, independent: 2366, independent conditional: 0, independent unconditional: 2366, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 5585, unknown conditional: 0, unknown unconditional: 5585] , Statistics on independence cache: Total cache size (in pairs): 308, Positive cache size: 282, Positive conditional cache size: 0, Positive unconditional cache size: 282, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1021]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1022]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 256 locations, 6 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: 545.9s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 272.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 73 mSolverCounterUnknown, 5547 SdHoareTripleChecker+Valid, 132.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5547 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 129.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 381 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20712 IncrementalHoareTripleChecker+Invalid, 21167 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 381 mSolverCounterUnsat, 4 mSDtfsCounter, 20712 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1017 GetRequests, 305 SyntacticMatches, 5 SemanticMatches, 707 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30294 ImplicationChecksByTransitivity, 378.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13789occurred in iteration=14, InterpolantAutomatonStates: 453, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 266.3s InterpolantComputationTime, 625 NumberOfCodeBlocks, 625 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 824 ConstructedInterpolants, 109 QuantifiedInterpolants, 40487 SizeOfPredicates, 140 NumberOfNonLiveVariables, 2152 ConjunctsInSsa, 308 ConjunctsInUnsatCore, 30 InterpolantComputations, 8 PerfectInterpolantSequences, 72/448 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