/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:45:56,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:45:57,000 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 15:45:57,017 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:45:57,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:45:57,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:45:57,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:45:57,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:45:57,019 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:45:57,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:45:57,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:45:57,019 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:45:57,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:45:57,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:45:57,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:45:57,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:45:57,021 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:45:57,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:45:57,021 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:45:57,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:45:57,037 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:45:57,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:45:57,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:45:57,038 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:45:57,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:45:57,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:45:57,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:45:57,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:45:57,039 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:45:57,039 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:45:57,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:45:57,039 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:45:57,040 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:45:57,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:45:57,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:45:57,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:45:57,243 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:45:57,243 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:45:57,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2023-11-17 15:45:58,299 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:45:58,464 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:45:58,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2023-11-17 15:45:58,471 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1d11fee7/9aa7417f5ac14a3a8194640c76e3180d/FLAG84df355bf [2023-11-17 15:45:58,481 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1d11fee7/9aa7417f5ac14a3a8194640c76e3180d [2023-11-17 15:45:58,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:45:58,484 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:45:58,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:45:58,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:45:58,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:45:58,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:45:58" (1/1) ... [2023-11-17 15:45:58,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c8d20bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:58, skipping insertion in model container [2023-11-17 15:45:58,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:45:58" (1/1) ... [2023-11-17 15:45:58,504 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:45:58,647 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c[2703,2716] [2023-11-17 15:45:58,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:45:58,661 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:45:58,696 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c[2703,2716] [2023-11-17 15:45:58,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:45:58,709 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:45:58,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:58 WrapperNode [2023-11-17 15:45:58,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:45:58,712 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:45:58,712 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:45:58,712 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:45:58,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:58" (1/1) ... [2023-11-17 15:45:58,731 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:58" (1/1) ... [2023-11-17 15:45:58,757 INFO L138 Inliner]: procedures = 22, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 131 [2023-11-17 15:45:58,758 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:45:58,758 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:45:58,758 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:45:58,758 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:45:58,764 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:58" (1/1) ... [2023-11-17 15:45:58,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:58" (1/1) ... [2023-11-17 15:45:58,776 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:58" (1/1) ... [2023-11-17 15:45:58,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:58" (1/1) ... [2023-11-17 15:45:58,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:58" (1/1) ... [2023-11-17 15:45:58,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:58" (1/1) ... [2023-11-17 15:45:58,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:58" (1/1) ... [2023-11-17 15:45:58,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:58" (1/1) ... [2023-11-17 15:45:58,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:45:58,793 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:45:58,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:45:58,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:45:58,793 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:58" (1/1) ... [2023-11-17 15:45:58,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:45:58,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:45:58,826 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 15:45:58,848 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 15:45:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:45:58,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:45:58,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:45:58,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:45:58,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:45:58,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 15:45:58,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 15:45:58,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 15:45:58,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 15:45:58,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:45:58,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-17 15:45:58,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-17 15:45:58,870 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-17 15:45:58,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-17 15:45:58,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:45:58,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:45:58,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:45:58,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:45:58,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:45:58,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:45:58,871 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 15:45:58,956 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:45:58,958 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:45:59,194 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:45:59,203 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:45:59,203 INFO L307 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-17 15:45:59,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:45:59 BoogieIcfgContainer [2023-11-17 15:45:59,204 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:45:59,206 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:45:59,206 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:45:59,208 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:45:59,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:45:58" (1/3) ... [2023-11-17 15:45:59,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc4d00e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:45:59, skipping insertion in model container [2023-11-17 15:45:59,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:58" (2/3) ... [2023-11-17 15:45:59,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc4d00e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:45:59, skipping insertion in model container [2023-11-17 15:45:59,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:45:59" (3/3) ... [2023-11-17 15:45:59,210 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2023-11-17 15:45:59,221 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:45:59,222 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:45:59,222 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:45:59,294 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-11-17 15:45:59,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 178 transitions, 398 flow [2023-11-17 15:45:59,368 INFO L124 PetriNetUnfolderBase]: 14/172 cut-off events. [2023-11-17 15:45:59,368 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 15:45:59,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 172 events. 14/172 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 128. Up to 2 conditions per place. [2023-11-17 15:45:59,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 178 transitions, 398 flow [2023-11-17 15:45:59,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 155 transitions, 346 flow [2023-11-17 15:45:59,379 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:45:59,392 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 155 transitions, 346 flow [2023-11-17 15:45:59,394 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 155 transitions, 346 flow [2023-11-17 15:45:59,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 155 transitions, 346 flow [2023-11-17 15:45:59,421 INFO L124 PetriNetUnfolderBase]: 14/155 cut-off events. [2023-11-17 15:45:59,421 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 15:45:59,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 155 events. 14/155 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 128. Up to 2 conditions per place. [2023-11-17 15:45:59,424 INFO L119 LiptonReduction]: Number of co-enabled transitions 3612 [2023-11-17 15:46:04,199 INFO L134 LiptonReduction]: Checked pairs total: 4501 [2023-11-17 15:46:04,199 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-11-17 15:46:04,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:46:04,214 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;@564dafa9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:46:04,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-17 15:46:04,233 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:46:04,234 INFO L124 PetriNetUnfolderBase]: 6/42 cut-off events. [2023-11-17 15:46:04,234 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 15:46:04,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:46:04,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:46:04,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:46:04,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:46:04,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1984572038, now seen corresponding path program 1 times [2023-11-17 15:46:04,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:46:04,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497306818] [2023-11-17 15:46:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:46:04,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:46:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:46:04,668 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 15:46:04,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:46:04,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497306818] [2023-11-17 15:46:04,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497306818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:46:04,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:46:04,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:46:04,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042844942] [2023-11-17 15:46:04,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:46:04,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:46:04,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:46:04,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:46:04,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:46:04,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 307 [2023-11-17 15:46:04,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:04,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:46:04,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 307 [2023-11-17 15:46:04,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:46:06,155 INFO L124 PetriNetUnfolderBase]: 21341/24682 cut-off events. [2023-11-17 15:46:06,155 INFO L125 PetriNetUnfolderBase]: For 1479/1479 co-relation queries the response was YES. [2023-11-17 15:46:06,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50578 conditions, 24682 events. 21341/24682 cut-off events. For 1479/1479 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 79965 event pairs, 1773 based on Foata normal form. 1/13598 useless extension candidates. Maximal degree in co-relation 38647. Up to 23405 conditions per place. [2023-11-17 15:46:06,354 INFO L140 encePairwiseOnDemand]: 299/307 looper letters, 63 selfloop transitions, 7 changer transitions 1/77 dead transitions. [2023-11-17 15:46:06,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 77 transitions, 365 flow [2023-11-17 15:46:06,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:46:06,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:46:06,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-11-17 15:46:06,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48534201954397393 [2023-11-17 15:46:06,366 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-11-17 15:46:06,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-11-17 15:46:06,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:46:06,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-11-17 15:46:06,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:06,375 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 15:46:06,376 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 15:46:06,377 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 122 flow. Second operand 3 states and 447 transitions. [2023-11-17 15:46:06,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 77 transitions, 365 flow [2023-11-17 15:46:06,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 319 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-17 15:46:06,392 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 145 flow [2023-11-17 15:46:06,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2023-11-17 15:46:06,396 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -9 predicate places. [2023-11-17 15:46:06,396 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 145 flow [2023-11-17 15:46:06,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:06,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:46:06,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:46:06,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:46:06,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:46:06,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:46:06,398 INFO L85 PathProgramCache]: Analyzing trace with hash 359480454, now seen corresponding path program 1 times [2023-11-17 15:46:06,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:46:06,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811930191] [2023-11-17 15:46:06,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:46:06,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:46:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:46:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:06,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:46:06,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811930191] [2023-11-17 15:46:06,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811930191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:46:06,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:46:06,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:46:06,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150197323] [2023-11-17 15:46:06,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:46:06,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:46:06,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:46:06,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:46:06,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:46:06,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 307 [2023-11-17 15:46:06,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:06,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:46:06,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 307 [2023-11-17 15:46:06,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:46:08,026 INFO L124 PetriNetUnfolderBase]: 25981/30274 cut-off events. [2023-11-17 15:46:08,027 INFO L125 PetriNetUnfolderBase]: For 7248/7248 co-relation queries the response was YES. [2023-11-17 15:46:08,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75159 conditions, 30274 events. 25981/30274 cut-off events. For 7248/7248 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 105284 event pairs, 1409 based on Foata normal form. 380/30616 useless extension candidates. Maximal degree in co-relation 22500. Up to 13319 conditions per place. [2023-11-17 15:46:08,177 INFO L140 encePairwiseOnDemand]: 302/307 looper letters, 112 selfloop transitions, 10 changer transitions 0/128 dead transitions. [2023-11-17 15:46:08,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 128 transitions, 615 flow [2023-11-17 15:46:08,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:46:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:46:08,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 787 transitions. [2023-11-17 15:46:08,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127035830618892 [2023-11-17 15:46:08,180 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 787 transitions. [2023-11-17 15:46:08,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 787 transitions. [2023-11-17 15:46:08,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:46:08,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 787 transitions. [2023-11-17 15:46:08,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.4) internal successors, (787), 5 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:08,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:08,185 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:08,185 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 145 flow. Second operand 5 states and 787 transitions. [2023-11-17 15:46:08,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 128 transitions, 615 flow [2023-11-17 15:46:08,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 128 transitions, 603 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:46:08,188 INFO L231 Difference]: Finished difference. Result has 52 places, 56 transitions, 203 flow [2023-11-17 15:46:08,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=52, PETRI_TRANSITIONS=56} [2023-11-17 15:46:08,188 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2023-11-17 15:46:08,189 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 56 transitions, 203 flow [2023-11-17 15:46:08,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:08,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:46:08,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:46:08,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:46:08,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:46:08,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:46:08,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1907296621, now seen corresponding path program 1 times [2023-11-17 15:46:08,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:46:08,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598383640] [2023-11-17 15:46:08,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:46:08,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:46:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:46:08,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:08,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:46:08,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598383640] [2023-11-17 15:46:08,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598383640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:46:08,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:46:08,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:46:08,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003418765] [2023-11-17 15:46:08,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:46:08,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:46:08,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:46:08,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:46:08,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:46:08,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 307 [2023-11-17 15:46:08,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 56 transitions, 203 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:08,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:46:08,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 307 [2023-11-17 15:46:08,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:46:10,579 INFO L124 PetriNetUnfolderBase]: 38985/46158 cut-off events. [2023-11-17 15:46:10,579 INFO L125 PetriNetUnfolderBase]: For 43270/43270 co-relation queries the response was YES. [2023-11-17 15:46:10,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136338 conditions, 46158 events. 38985/46158 cut-off events. For 43270/43270 co-relation queries the response was YES. Maximal size of possible extension queue 1472. Compared 185603 event pairs, 7211 based on Foata normal form. 860/46884 useless extension candidates. Maximal degree in co-relation 53788. Up to 20709 conditions per place. [2023-11-17 15:46:10,808 INFO L140 encePairwiseOnDemand]: 302/307 looper letters, 147 selfloop transitions, 8 changer transitions 0/161 dead transitions. [2023-11-17 15:46:10,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 161 transitions, 898 flow [2023-11-17 15:46:10,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:46:10,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:46:10,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 801 transitions. [2023-11-17 15:46:10,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5218241042345277 [2023-11-17 15:46:10,811 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 801 transitions. [2023-11-17 15:46:10,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 801 transitions. [2023-11-17 15:46:10,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:46:10,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 801 transitions. [2023-11-17 15:46:10,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.2) internal successors, (801), 5 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:10,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:10,816 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:10,816 INFO L175 Difference]: Start difference. First operand has 52 places, 56 transitions, 203 flow. Second operand 5 states and 801 transitions. [2023-11-17 15:46:10,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 161 transitions, 898 flow [2023-11-17 15:46:10,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 161 transitions, 898 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:46:10,833 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 258 flow [2023-11-17 15:46:10,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-11-17 15:46:10,835 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-17 15:46:10,835 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 258 flow [2023-11-17 15:46:10,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:10,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:46:10,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:46:10,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:46:10,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:46:10,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:46:10,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2001835915, now seen corresponding path program 1 times [2023-11-17 15:46:10,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:46:10,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709053426] [2023-11-17 15:46:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:46:10,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:46:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:46:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:10,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:46:10,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709053426] [2023-11-17 15:46:10,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709053426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:46:10,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:46:10,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:46:10,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224370657] [2023-11-17 15:46:10,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:46:10,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:46:10,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:46:10,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:46:10,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:46:10,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 307 [2023-11-17 15:46:10,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:10,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:46:10,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 307 [2023-11-17 15:46:10,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:46:13,382 INFO L124 PetriNetUnfolderBase]: 38813/45964 cut-off events. [2023-11-17 15:46:13,382 INFO L125 PetriNetUnfolderBase]: For 55617/55617 co-relation queries the response was YES. [2023-11-17 15:46:13,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150097 conditions, 45964 events. 38813/45964 cut-off events. For 55617/55617 co-relation queries the response was YES. Maximal size of possible extension queue 1486. Compared 180317 event pairs, 2129 based on Foata normal form. 636/46551 useless extension candidates. Maximal degree in co-relation 79488. Up to 20014 conditions per place. [2023-11-17 15:46:13,618 INFO L140 encePairwiseOnDemand]: 302/307 looper letters, 132 selfloop transitions, 8 changer transitions 0/146 dead transitions. [2023-11-17 15:46:13,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 146 transitions, 873 flow [2023-11-17 15:46:13,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:46:13,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:46:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 786 transitions. [2023-11-17 15:46:13,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120521172638437 [2023-11-17 15:46:13,622 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 786 transitions. [2023-11-17 15:46:13,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 786 transitions. [2023-11-17 15:46:13,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:46:13,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 786 transitions. [2023-11-17 15:46:13,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.2) internal successors, (786), 5 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:13,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:13,630 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:13,630 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 258 flow. Second operand 5 states and 786 transitions. [2023-11-17 15:46:13,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 146 transitions, 873 flow [2023-11-17 15:46:13,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 146 transitions, 873 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:46:13,660 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 272 flow [2023-11-17 15:46:13,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2023-11-17 15:46:13,662 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2023-11-17 15:46:13,662 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 272 flow [2023-11-17 15:46:13,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:13,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:46:13,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:46:13,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:46:13,663 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:46:13,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:46:13,663 INFO L85 PathProgramCache]: Analyzing trace with hash 413177463, now seen corresponding path program 1 times [2023-11-17 15:46:13,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:46:13,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364553487] [2023-11-17 15:46:13,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:46:13,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:46:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:46:13,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:13,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:46:13,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364553487] [2023-11-17 15:46:13,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364553487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:46:13,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:46:13,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:46:13,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794314443] [2023-11-17 15:46:13,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:46:13,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:46:13,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:46:13,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:46:13,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:46:13,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 307 [2023-11-17 15:46:13,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:13,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:46:13,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 307 [2023-11-17 15:46:13,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:46:16,289 INFO L124 PetriNetUnfolderBase]: 38271/45398 cut-off events. [2023-11-17 15:46:16,289 INFO L125 PetriNetUnfolderBase]: For 81313/81313 co-relation queries the response was YES. [2023-11-17 15:46:16,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155765 conditions, 45398 events. 38271/45398 cut-off events. For 81313/81313 co-relation queries the response was YES. Maximal size of possible extension queue 1452. Compared 184623 event pairs, 4159 based on Foata normal form. 594/45956 useless extension candidates. Maximal degree in co-relation 83445. Up to 19450 conditions per place. [2023-11-17 15:46:16,525 INFO L140 encePairwiseOnDemand]: 302/307 looper letters, 144 selfloop transitions, 10 changer transitions 0/160 dead transitions. [2023-11-17 15:46:16,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 160 transitions, 1028 flow [2023-11-17 15:46:16,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:46:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:46:16,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 791 transitions. [2023-11-17 15:46:16,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153094462540717 [2023-11-17 15:46:16,527 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 791 transitions. [2023-11-17 15:46:16,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 791 transitions. [2023-11-17 15:46:16,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:46:16,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 791 transitions. [2023-11-17 15:46:16,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:16,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:16,532 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:16,532 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 272 flow. Second operand 5 states and 791 transitions. [2023-11-17 15:46:16,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 160 transitions, 1028 flow [2023-11-17 15:46:16,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 160 transitions, 1007 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:46:16,580 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 328 flow [2023-11-17 15:46:16,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2023-11-17 15:46:16,581 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2023-11-17 15:46:16,581 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 328 flow [2023-11-17 15:46:16,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:16,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:46:16,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:46:16,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:46:16,582 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:46:16,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:46:16,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1830795027, now seen corresponding path program 1 times [2023-11-17 15:46:16,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:46:16,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582297718] [2023-11-17 15:46:16,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:46:16,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:46:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:46:16,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:16,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:46:16,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582297718] [2023-11-17 15:46:16,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582297718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:46:16,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:46:16,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:46:16,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719292396] [2023-11-17 15:46:16,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:46:16,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:46:16,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:46:16,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:46:16,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:46:16,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 307 [2023-11-17 15:46:16,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:16,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:46:16,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 307 [2023-11-17 15:46:16,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:46:20,051 INFO L124 PetriNetUnfolderBase]: 50462/61236 cut-off events. [2023-11-17 15:46:20,051 INFO L125 PetriNetUnfolderBase]: For 130551/130551 co-relation queries the response was YES. [2023-11-17 15:46:20,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223137 conditions, 61236 events. 50462/61236 cut-off events. For 130551/130551 co-relation queries the response was YES. Maximal size of possible extension queue 2143. Compared 279252 event pairs, 7721 based on Foata normal form. 1200/62086 useless extension candidates. Maximal degree in co-relation 120457. Up to 26431 conditions per place. [2023-11-17 15:46:20,400 INFO L140 encePairwiseOnDemand]: 302/307 looper letters, 167 selfloop transitions, 8 changer transitions 0/181 dead transitions. [2023-11-17 15:46:20,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 181 transitions, 1314 flow [2023-11-17 15:46:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:46:20,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:46:20,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 785 transitions. [2023-11-17 15:46:20,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.511400651465798 [2023-11-17 15:46:20,403 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 785 transitions. [2023-11-17 15:46:20,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 785 transitions. [2023-11-17 15:46:20,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:46:20,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 785 transitions. [2023-11-17 15:46:20,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.0) internal successors, (785), 5 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 15:46:20,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:20,406 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:20,406 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 328 flow. Second operand 5 states and 785 transitions. [2023-11-17 15:46:20,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 181 transitions, 1314 flow [2023-11-17 15:46:20,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 181 transitions, 1266 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-11-17 15:46:20,437 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 368 flow [2023-11-17 15:46:20,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=368, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2023-11-17 15:46:20,437 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-11-17 15:46:20,437 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 368 flow [2023-11-17 15:46:20,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:20,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:46:20,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:46:20,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:46:20,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:46:20,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:46:20,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2138046595, now seen corresponding path program 2 times [2023-11-17 15:46:20,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:46:20,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021563585] [2023-11-17 15:46:20,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:46:20,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:46:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:46:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:20,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:46:20,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021563585] [2023-11-17 15:46:20,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021563585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:46:20,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:46:20,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:46:20,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186615281] [2023-11-17 15:46:20,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:46:20,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:46:20,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:46:20,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:46:20,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:46:20,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 307 [2023-11-17 15:46:20,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:20,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:46:20,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 307 [2023-11-17 15:46:20,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:46:23,893 INFO L124 PetriNetUnfolderBase]: 45076/54470 cut-off events. [2023-11-17 15:46:23,893 INFO L125 PetriNetUnfolderBase]: For 126161/126161 co-relation queries the response was YES. [2023-11-17 15:46:24,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219865 conditions, 54470 events. 45076/54470 cut-off events. For 126161/126161 co-relation queries the response was YES. Maximal size of possible extension queue 1860. Compared 236165 event pairs, 2721 based on Foata normal form. 594/54714 useless extension candidates. Maximal degree in co-relation 127338. Up to 23341 conditions per place. [2023-11-17 15:46:24,264 INFO L140 encePairwiseOnDemand]: 302/307 looper letters, 172 selfloop transitions, 11 changer transitions 0/189 dead transitions. [2023-11-17 15:46:24,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 189 transitions, 1396 flow [2023-11-17 15:46:24,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:46:24,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:46:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 783 transitions. [2023-11-17 15:46:24,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5100977198697069 [2023-11-17 15:46:24,267 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 783 transitions. [2023-11-17 15:46:24,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 783 transitions. [2023-11-17 15:46:24,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:46:24,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 783 transitions. [2023-11-17 15:46:24,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.6) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:24,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:24,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:24,271 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 368 flow. Second operand 5 states and 783 transitions. [2023-11-17 15:46:24,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 189 transitions, 1396 flow [2023-11-17 15:46:25,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 189 transitions, 1396 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:46:25,052 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 429 flow [2023-11-17 15:46:25,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=429, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2023-11-17 15:46:25,053 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2023-11-17 15:46:25,053 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 429 flow [2023-11-17 15:46:25,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:25,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:46:25,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:46:25,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:46:25,053 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:46:25,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:46:25,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1795204522, now seen corresponding path program 1 times [2023-11-17 15:46:25,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:46:25,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509367525] [2023-11-17 15:46:25,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:46:25,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:46:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:46:25,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:25,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:46:25,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509367525] [2023-11-17 15:46:25,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509367525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:46:25,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:46:25,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:46:25,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658067315] [2023-11-17 15:46:25,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:46:25,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:46:25,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:46:25,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:46:25,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:46:25,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 307 [2023-11-17 15:46:25,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 429 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:25,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:46:25,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 307 [2023-11-17 15:46:25,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:46:28,458 INFO L124 PetriNetUnfolderBase]: 44470/53864 cut-off events. [2023-11-17 15:46:28,458 INFO L125 PetriNetUnfolderBase]: For 142599/142599 co-relation queries the response was YES. [2023-11-17 15:46:28,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229234 conditions, 53864 events. 44470/53864 cut-off events. For 142599/142599 co-relation queries the response was YES. Maximal size of possible extension queue 1859. Compared 236485 event pairs, 2189 based on Foata normal form. 606/54120 useless extension candidates. Maximal degree in co-relation 132645. Up to 24183 conditions per place. [2023-11-17 15:46:28,807 INFO L140 encePairwiseOnDemand]: 302/307 looper letters, 173 selfloop transitions, 8 changer transitions 0/187 dead transitions. [2023-11-17 15:46:28,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 187 transitions, 1409 flow [2023-11-17 15:46:28,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:46:28,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:46:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 782 transitions. [2023-11-17 15:46:28,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094462540716612 [2023-11-17 15:46:28,809 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 782 transitions. [2023-11-17 15:46:28,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 782 transitions. [2023-11-17 15:46:28,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:46:28,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 782 transitions. [2023-11-17 15:46:28,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.4) internal successors, (782), 5 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:28,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:28,813 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:28,813 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 429 flow. Second operand 5 states and 782 transitions. [2023-11-17 15:46:28,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 187 transitions, 1409 flow [2023-11-17 15:46:29,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 187 transitions, 1398 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 15:46:29,537 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 432 flow [2023-11-17 15:46:29,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=432, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2023-11-17 15:46:29,538 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2023-11-17 15:46:29,538 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 432 flow [2023-11-17 15:46:29,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:29,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:46:29,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:46:29,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:46:29,539 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:46:29,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:46:29,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1138020006, now seen corresponding path program 2 times [2023-11-17 15:46:29,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:46:29,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830573477] [2023-11-17 15:46:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:46:29,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:46:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:46:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:29,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:46:29,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830573477] [2023-11-17 15:46:29,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830573477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:46:29,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:46:29,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:46:29,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717256192] [2023-11-17 15:46:29,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:46:29,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:46:29,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:46:29,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:46:29,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:46:29,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 307 [2023-11-17 15:46:29,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:29,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:46:29,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 307 [2023-11-17 15:46:29,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:46:32,928 INFO L124 PetriNetUnfolderBase]: 43282/52844 cut-off events. [2023-11-17 15:46:32,928 INFO L125 PetriNetUnfolderBase]: For 146608/146608 co-relation queries the response was YES. [2023-11-17 15:46:33,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229776 conditions, 52844 events. 43282/52844 cut-off events. For 146608/146608 co-relation queries the response was YES. Maximal size of possible extension queue 1795. Compared 241567 event pairs, 7151 based on Foata normal form. 1188/53682 useless extension candidates. Maximal degree in co-relation 132982. Up to 27803 conditions per place. [2023-11-17 15:46:33,306 INFO L140 encePairwiseOnDemand]: 302/307 looper letters, 166 selfloop transitions, 8 changer transitions 0/180 dead transitions. [2023-11-17 15:46:33,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 180 transitions, 1369 flow [2023-11-17 15:46:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:46:33,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:46:33,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 779 transitions. [2023-11-17 15:46:33,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5074918566775244 [2023-11-17 15:46:33,308 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 779 transitions. [2023-11-17 15:46:33,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 779 transitions. [2023-11-17 15:46:33,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:46:33,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 779 transitions. [2023-11-17 15:46:33,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.8) internal successors, (779), 5 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:33,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:33,312 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:33,312 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 432 flow. Second operand 5 states and 779 transitions. [2023-11-17 15:46:33,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 180 transitions, 1369 flow [2023-11-17 15:46:33,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 180 transitions, 1356 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 15:46:33,771 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 472 flow [2023-11-17 15:46:33,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=472, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2023-11-17 15:46:33,772 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 32 predicate places. [2023-11-17 15:46:33,772 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 472 flow [2023-11-17 15:46:33,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:33,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:46:33,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:46:33,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:46:33,773 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:46:33,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:46:33,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2092033294, now seen corresponding path program 2 times [2023-11-17 15:46:33,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:46:33,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409858994] [2023-11-17 15:46:33,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:46:33,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:46:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:46:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:33,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:46:33,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409858994] [2023-11-17 15:46:33,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409858994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:46:33,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:46:33,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:46:33,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918773074] [2023-11-17 15:46:33,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:46:33,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:46:33,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:46:33,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:46:33,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:46:33,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 307 [2023-11-17 15:46:33,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 472 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:33,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:46:33,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 307 [2023-11-17 15:46:33,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:46:37,301 INFO L124 PetriNetUnfolderBase]: 41899/51203 cut-off events. [2023-11-17 15:46:37,301 INFO L125 PetriNetUnfolderBase]: For 155214/155214 co-relation queries the response was YES. [2023-11-17 15:46:37,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230964 conditions, 51203 events. 41899/51203 cut-off events. For 155214/155214 co-relation queries the response was YES. Maximal size of possible extension queue 1743. Compared 236993 event pairs, 8219 based on Foata normal form. 1456/52541 useless extension candidates. Maximal degree in co-relation 206181. Up to 28631 conditions per place. [2023-11-17 15:46:37,655 INFO L140 encePairwiseOnDemand]: 302/307 looper letters, 195 selfloop transitions, 8 changer transitions 0/209 dead transitions. [2023-11-17 15:46:37,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 209 transitions, 1705 flow [2023-11-17 15:46:37,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:46:37,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:46:37,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 787 transitions. [2023-11-17 15:46:37,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127035830618892 [2023-11-17 15:46:37,657 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 787 transitions. [2023-11-17 15:46:37,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 787 transitions. [2023-11-17 15:46:37,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:46:37,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 787 transitions. [2023-11-17 15:46:37,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.4) internal successors, (787), 5 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:37,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:37,661 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:37,661 INFO L175 Difference]: Start difference. First operand has 88 places, 77 transitions, 472 flow. Second operand 5 states and 787 transitions. [2023-11-17 15:46:37,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 209 transitions, 1705 flow [2023-11-17 15:46:38,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 209 transitions, 1643 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-11-17 15:46:38,179 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 502 flow [2023-11-17 15:46:38,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=502, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2023-11-17 15:46:38,180 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2023-11-17 15:46:38,180 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 502 flow [2023-11-17 15:46:38,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:38,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:46:38,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:46:38,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:46:38,181 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:46:38,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:46:38,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1887427701, now seen corresponding path program 2 times [2023-11-17 15:46:38,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:46:38,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629993310] [2023-11-17 15:46:38,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:46:38,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:46:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:46:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:38,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:46:38,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629993310] [2023-11-17 15:46:38,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629993310] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:46:38,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238983108] [2023-11-17 15:46:38,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:46:38,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:46:38,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:46:38,275 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 15:46:38,278 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 15:46:38,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:46:38,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:46:38,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 15:46:38,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:46:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:38,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:46:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:38,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238983108] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:46:38,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:46:38,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-17 15:46:38,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826236701] [2023-11-17 15:46:38,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:46:38,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:46:38,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:46:38,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:46:38,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:46:38,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 307 [2023-11-17 15:46:38,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 502 flow. Second operand has 6 states, 6 states have (on average 144.33333333333334) internal successors, (866), 6 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:38,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:46:38,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 307 [2023-11-17 15:46:38,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:46:42,305 INFO L124 PetriNetUnfolderBase]: 40515/49819 cut-off events. [2023-11-17 15:46:42,305 INFO L125 PetriNetUnfolderBase]: For 162036/162036 co-relation queries the response was YES. [2023-11-17 15:46:42,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234388 conditions, 49819 events. 40515/49819 cut-off events. For 162036/162036 co-relation queries the response was YES. Maximal size of possible extension queue 1680. Compared 233769 event pairs, 8495 based on Foata normal form. 1384/51085 useless extension candidates. Maximal degree in co-relation 210757. Up to 27699 conditions per place. [2023-11-17 15:46:42,685 INFO L140 encePairwiseOnDemand]: 302/307 looper letters, 194 selfloop transitions, 8 changer transitions 0/208 dead transitions. [2023-11-17 15:46:42,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 208 transitions, 1690 flow [2023-11-17 15:46:42,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:46:42,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:46:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 783 transitions. [2023-11-17 15:46:42,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5100977198697069 [2023-11-17 15:46:42,800 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 783 transitions. [2023-11-17 15:46:42,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 783 transitions. [2023-11-17 15:46:42,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:46:42,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 783 transitions. [2023-11-17 15:46:42,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.6) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:42,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:42,803 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:42,803 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 502 flow. Second operand 5 states and 783 transitions. [2023-11-17 15:46:42,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 208 transitions, 1690 flow [2023-11-17 15:46:43,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 208 transitions, 1681 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 15:46:43,521 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 550 flow [2023-11-17 15:46:43,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=550, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2023-11-17 15:46:43,521 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2023-11-17 15:46:43,522 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 550 flow [2023-11-17 15:46:43,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.33333333333334) internal successors, (866), 6 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:43,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:46:43,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:46:43,541 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 15:46:43,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-17 15:46:43,728 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:46:43,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:46:43,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1776945281, now seen corresponding path program 2 times [2023-11-17 15:46:43,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:46:43,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384286285] [2023-11-17 15:46:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:46:43,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:46:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:46:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:43,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:46:43,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384286285] [2023-11-17 15:46:43,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384286285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:46:43,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:46:43,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:46:43,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760371260] [2023-11-17 15:46:43,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:46:43,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:46:43,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:46:43,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:46:43,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:46:43,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 307 [2023-11-17 15:46:43,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 550 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:43,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:46:43,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 307 [2023-11-17 15:46:43,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:46:46,770 INFO L124 PetriNetUnfolderBase]: 34257/41733 cut-off events. [2023-11-17 15:46:46,770 INFO L125 PetriNetUnfolderBase]: For 190895/190899 co-relation queries the response was YES. [2023-11-17 15:46:46,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205469 conditions, 41733 events. 34257/41733 cut-off events. For 190895/190899 co-relation queries the response was YES. Maximal size of possible extension queue 1421. Compared 187504 event pairs, 2689 based on Foata normal form. 419/42122 useless extension candidates. Maximal degree in co-relation 185331. Up to 19060 conditions per place. [2023-11-17 15:46:47,094 INFO L140 encePairwiseOnDemand]: 302/307 looper letters, 214 selfloop transitions, 9 changer transitions 0/229 dead transitions. [2023-11-17 15:46:47,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 229 transitions, 2013 flow [2023-11-17 15:46:47,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:46:47,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:46:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 790 transitions. [2023-11-17 15:46:47,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146579804560261 [2023-11-17 15:46:47,096 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 790 transitions. [2023-11-17 15:46:47,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 790 transitions. [2023-11-17 15:46:47,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:46:47,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 790 transitions. [2023-11-17 15:46:47,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:47,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:47,099 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:47,099 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 550 flow. Second operand 5 states and 790 transitions. [2023-11-17 15:46:47,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 229 transitions, 2013 flow [2023-11-17 15:46:47,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 229 transitions, 1968 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-11-17 15:46:47,380 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 552 flow [2023-11-17 15:46:47,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2023-11-17 15:46:47,381 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 45 predicate places. [2023-11-17 15:46:47,381 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 552 flow [2023-11-17 15:46:47,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:47,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:46:47,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:46:47,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 15:46:47,381 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:46:47,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:46:47,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1112341703, now seen corresponding path program 2 times [2023-11-17 15:46:47,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:46:47,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700165796] [2023-11-17 15:46:47,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:46:47,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:46:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:46:47,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:47,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:46:47,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700165796] [2023-11-17 15:46:47,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700165796] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:46:47,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532182247] [2023-11-17 15:46:47,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:46:47,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:46:47,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:46:47,573 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 15:46:47,576 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 15:46:47,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:46:47,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:46:47,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 15:46:47,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:46:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:47,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:46:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:47,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532182247] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:46:47,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:46:47,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-17 15:46:47,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788113568] [2023-11-17 15:46:47,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:46:47,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:46:47,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:46:47,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:46:47,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:46:47,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 307 [2023-11-17 15:46:47,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 552 flow. Second operand has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:47,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:46:47,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 307 [2023-11-17 15:46:47,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:46:50,755 INFO L124 PetriNetUnfolderBase]: 33421/41024 cut-off events. [2023-11-17 15:46:50,755 INFO L125 PetriNetUnfolderBase]: For 177114/177130 co-relation queries the response was YES. [2023-11-17 15:46:50,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204556 conditions, 41024 events. 33421/41024 cut-off events. For 177114/177130 co-relation queries the response was YES. Maximal size of possible extension queue 1396. Compared 189260 event pairs, 10579 based on Foata normal form. 840/41755 useless extension candidates. Maximal degree in co-relation 184497. Up to 23061 conditions per place. [2023-11-17 15:46:51,172 INFO L140 encePairwiseOnDemand]: 302/307 looper letters, 209 selfloop transitions, 8 changer transitions 0/223 dead transitions. [2023-11-17 15:46:51,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 223 transitions, 1937 flow [2023-11-17 15:46:51,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:46:51,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:46:51,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 787 transitions. [2023-11-17 15:46:51,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127035830618892 [2023-11-17 15:46:51,174 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 787 transitions. [2023-11-17 15:46:51,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 787 transitions. [2023-11-17 15:46:51,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:46:51,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 787 transitions. [2023-11-17 15:46:51,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.4) internal successors, (787), 5 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:51,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:51,177 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:51,177 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 552 flow. Second operand 5 states and 787 transitions. [2023-11-17 15:46:51,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 223 transitions, 1937 flow [2023-11-17 15:46:51,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 223 transitions, 1928 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 15:46:51,397 INFO L231 Difference]: Finished difference. Result has 106 places, 85 transitions, 593 flow [2023-11-17 15:46:51,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=593, PETRI_PLACES=106, PETRI_TRANSITIONS=85} [2023-11-17 15:46:51,397 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2023-11-17 15:46:51,397 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 85 transitions, 593 flow [2023-11-17 15:46:51,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:46:51,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:46:51,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:46:51,405 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 15:46:51,602 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,SelfDestructingSolverStorable12 [2023-11-17 15:46:51,602 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:46:51,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:46:51,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1742975985, now seen corresponding path program 1 times [2023-11-17 15:46:51,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:46:51,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550579214] [2023-11-17 15:46:51,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:46:51,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:46:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:46:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:46:52,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:46:52,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550579214] [2023-11-17 15:46:52,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550579214] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:46:52,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264530581] [2023-11-17 15:46:52,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:46:52,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:46:52,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:46:52,185 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 15:46:52,191 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 15:46:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:46:52,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 15:46:52,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:47:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:47:09,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:47:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:47:13,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264530581] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:47:13,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:47:13,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-11-17 15:47:13,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610120686] [2023-11-17 15:47:13,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:47:13,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 15:47:13,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:47:13,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 15:47:13,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=168, Unknown=2, NotChecked=0, Total=240 [2023-11-17 15:47:13,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 307 [2023-11-17 15:47:13,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 85 transitions, 593 flow. Second operand has 16 states, 16 states have (on average 128.375) internal successors, (2054), 16 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:47:13,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:47:13,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 307 [2023-11-17 15:47:13,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:47:16,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:47:18,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:47:27,596 WARN L293 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 62 DAG size of output: 35 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-17 15:47:30,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:47:32,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 15:47:34,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:47:36,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:47:39,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:47:41,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:47:43,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:47:45,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:47:47,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:47:49,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:47:51,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:47:53,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:47:56,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 15:47:59,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:01,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:03,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:07,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:13,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:15,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:18,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:20,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:21,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:25,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:28,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:31,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:33,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:36,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:38,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:41,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:43,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:45,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:47,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:49,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:51,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:55,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:57,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 15:48:58,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 15:49:00,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 15:49:03,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 15:49:06,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:49:08,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:49:10,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 15:49:12,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 15:49:15,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 15:49:17,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:49:20,123 INFO L124 PetriNetUnfolderBase]: 50597/62319 cut-off events. [2023-11-17 15:49:20,123 INFO L125 PetriNetUnfolderBase]: For 251265/251265 co-relation queries the response was YES. [2023-11-17 15:49:20,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325704 conditions, 62319 events. 50597/62319 cut-off events. For 251265/251265 co-relation queries the response was YES. Maximal size of possible extension queue 2140. Compared 303412 event pairs, 6701 based on Foata normal form. 91/62373 useless extension candidates. Maximal degree in co-relation 301166. Up to 44933 conditions per place. [2023-11-17 15:49:20,786 INFO L140 encePairwiseOnDemand]: 292/307 looper letters, 458 selfloop transitions, 200 changer transitions 10/674 dead transitions. [2023-11-17 15:49:20,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 674 transitions, 5581 flow [2023-11-17 15:49:20,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 15:49:20,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 15:49:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2660 transitions. [2023-11-17 15:49:20,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813608396670286 [2023-11-17 15:49:20,792 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2660 transitions. [2023-11-17 15:49:20,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2660 transitions. [2023-11-17 15:49:20,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:49:20,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2660 transitions. [2023-11-17 15:49:20,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 147.77777777777777) internal successors, (2660), 18 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:49:20,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 307.0) internal successors, (5833), 19 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:49:20,810 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 307.0) internal successors, (5833), 19 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:49:20,810 INFO L175 Difference]: Start difference. First operand has 106 places, 85 transitions, 593 flow. Second operand 18 states and 2660 transitions. [2023-11-17 15:49:20,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 674 transitions, 5581 flow [2023-11-17 15:49:21,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 674 transitions, 5431 flow, removed 40 selfloop flow, removed 2 redundant places. [2023-11-17 15:49:21,705 INFO L231 Difference]: Finished difference. Result has 132 places, 283 transitions, 3031 flow [2023-11-17 15:49:21,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3031, PETRI_PLACES=132, PETRI_TRANSITIONS=283} [2023-11-17 15:49:21,706 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 76 predicate places. [2023-11-17 15:49:21,706 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 283 transitions, 3031 flow [2023-11-17 15:49:21,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 128.375) internal successors, (2054), 16 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:49:21,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:49:21,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:49:21,713 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 15:49:21,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:49:21,912 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:49:21,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:49:21,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1471012776, now seen corresponding path program 1 times [2023-11-17 15:49:21,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:49:21,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327399472] [2023-11-17 15:49:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:49:21,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:49:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:49:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:49:22,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:49:22,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327399472] [2023-11-17 15:49:22,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327399472] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:49:22,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462297146] [2023-11-17 15:49:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:49:22,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:49:22,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:49:22,471 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 15:49:22,473 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 15:49:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:49:22,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 15:49:22,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:50:27,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:50:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:50:54,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462297146] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:50:54,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:50:54,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 15 [2023-11-17 15:50:54,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504779672] [2023-11-17 15:50:54,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:50:54,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 15:50:54,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:54,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 15:50:54,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=185, Unknown=33, NotChecked=0, Total=272 [2023-11-17 15:50:54,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 307 [2023-11-17 15:50:54,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 283 transitions, 3031 flow. Second operand has 17 states, 17 states have (on average 128.11764705882354) internal successors, (2178), 17 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:54,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:54,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 307 [2023-11-17 15:50:54,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:19,474 WARN L293 SmtUtils]: Spent 21.56s on a formula simplification. DAG size of input: 98 DAG size of output: 74 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-17 15:51:22,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 15:51:24,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:51:27,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:51:29,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:51:31,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:51:33,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:51:50,046 WARN L293 SmtUtils]: Spent 8.55s on a formula simplification. DAG size of input: 85 DAG size of output: 59 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-17 15:51:55,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 15:51:58,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:01,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:03,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:05,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:09,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:11,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:12,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:14,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:16,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:18,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:21,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:23,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:25,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:27,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:29,370 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (* (div c_~x2~0 4294967296) 4294967296))) (let ((.cse3 (+ c_~x1~0 .cse6)) (.cse5 (* 4294967296 (div c_~x1~0 4294967296))) (.cse1 (mod c_~n~0 4294967296)) (.cse7 (mod (* 4294967295 (div (* (- 1) c_~x1~0) 2)) 4294967296)) (.cse0 (mod c_~x5~0 4294967296)) (.cse2 (mod c_~x3~0 4294967296))) (and (= (mod c_~x2~0 2) 0) (= (mod c_~x6~0 4294967296) .cse0) (<= .cse1 (mod c_~x1~0 4294967296)) (= .cse2 (mod c_~x4~0 4294967296)) (let ((.cse4 (+ .cse5 c_~x2~0))) (or (and (= (+ (* 4294967296 (div c_~x3~0 4294967296)) c_~x4~0) (+ c_~x3~0 (* (div c_~x4~0 4294967296) 4294967296))) (= (+ c_~x6~0 (* (div c_~x5~0 4294967296) 4294967296)) (+ (* (div c_~x6~0 4294967296) 4294967296) c_~x5~0)) (= .cse3 .cse4)) (< .cse4 .cse3))) (= (mod c_~x1~0 2) 0) (or (< .cse3 (+ .cse5 c_~x2~0 1)) (< (+ 2 (* 4294967296 (div c_~n~0 4294967296)) c_~x2~0) (+ c_~n~0 .cse6))) (<= (+ .cse7 1) .cse1) (= (mod (* (div (* (- 1) c_~x2~0) 2) 4294967295) 4294967296) .cse7) (<= 1 .cse0) (<= 1 .cse2)))) is different from false [2023-11-17 15:52:32,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:34,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:36,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:38,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:40,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:42,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:45,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:47,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:52:59,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 15:53:02,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:53:04,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:53:08,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:53:18,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:53:20,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:53:29,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:53:31,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:53:34,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:53:40,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:53:42,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:53:55,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:53:58,945 INFO L124 PetriNetUnfolderBase]: 57563/71105 cut-off events. [2023-11-17 15:53:58,945 INFO L125 PetriNetUnfolderBase]: For 435706/435706 co-relation queries the response was YES. [2023-11-17 15:53:59,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427634 conditions, 71105 events. 57563/71105 cut-off events. For 435706/435706 co-relation queries the response was YES. Maximal size of possible extension queue 2477. Compared 354591 event pairs, 5041 based on Foata normal form. 2/71081 useless extension candidates. Maximal degree in co-relation 414177. Up to 63426 conditions per place. [2023-11-17 15:53:59,914 INFO L140 encePairwiseOnDemand]: 282/307 looper letters, 526 selfloop transitions, 115 changer transitions 9/656 dead transitions. [2023-11-17 15:53:59,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 656 transitions, 6647 flow [2023-11-17 15:53:59,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:53:59,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:53:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2054 transitions. [2023-11-17 15:53:59,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4778966961377385 [2023-11-17 15:53:59,918 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2054 transitions. [2023-11-17 15:53:59,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2054 transitions. [2023-11-17 15:53:59,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:59,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2054 transitions. [2023-11-17 15:53:59,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 146.71428571428572) internal successors, (2054), 14 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:59,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 307.0) internal successors, (4605), 15 states have internal predecessors, (4605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:59,942 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 307.0) internal successors, (4605), 15 states have internal predecessors, (4605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:59,942 INFO L175 Difference]: Start difference. First operand has 132 places, 283 transitions, 3031 flow. Second operand 14 states and 2054 transitions. [2023-11-17 15:53:59,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 656 transitions, 6647 flow [2023-11-17 15:54:03,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 656 transitions, 6204 flow, removed 218 selfloop flow, removed 1 redundant places. [2023-11-17 15:54:03,866 INFO L231 Difference]: Finished difference. Result has 151 places, 393 transitions, 4084 flow [2023-11-17 15:54:03,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4084, PETRI_PLACES=151, PETRI_TRANSITIONS=393} [2023-11-17 15:54:03,873 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 95 predicate places. [2023-11-17 15:54:03,873 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 393 transitions, 4084 flow [2023-11-17 15:54:03,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 128.11764705882354) internal successors, (2178), 17 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:03,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:03,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:03,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 15:54:04,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-17 15:54:04,074 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:54:04,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:04,075 INFO L85 PathProgramCache]: Analyzing trace with hash 624046796, now seen corresponding path program 2 times [2023-11-17 15:54:04,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:04,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159495937] [2023-11-17 15:54:04,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:04,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:04,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:54:04,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:04,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159495937] [2023-11-17 15:54:04,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159495937] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:54:04,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315787202] [2023-11-17 15:54:04,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:54:04,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:04,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:54:04,534 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 15:54:04,536 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 15:54:04,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:54:04,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:54:04,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 15:54:04,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:54:49,034 WARN L293 SmtUtils]: Spent 6.39s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-11-17 15:55:25,312 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 15:55:25,338 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 15:55:26,321 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 15:55:26,539 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 15:55:26,546 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-11-17 15:55:26,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 15:55:26,547 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2023-11-17 15:55:26,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-11-17 15:55:26,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-17 15:55:26,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-17 15:55:26,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-11-17 15:55:26,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-11-17 15:55:26,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-11-17 15:55:26,548 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 1, 1] [2023-11-17 15:55:26,550 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 15:55:26,558 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:55:26,558 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:55:26,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:55:26 BasicIcfg [2023-11-17 15:55:26,560 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:55:26,560 INFO L158 Benchmark]: Toolchain (without parser) took 568076.68ms. Allocated memory was 318.8MB in the beginning and 7.8GB in the end (delta: 7.5GB). Free memory was 280.7MB in the beginning and 5.7GB in the end (delta: -5.4GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-11-17 15:55:26,562 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 205.5MB. Free memory is still 151.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:55:26,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.85ms. Allocated memory is still 318.8MB. Free memory was 280.3MB in the beginning and 268.6MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 15:55:26,563 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.69ms. Allocated memory is still 318.8MB. Free memory was 268.6MB in the beginning and 266.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:55:26,566 INFO L158 Benchmark]: Boogie Preprocessor took 33.92ms. Allocated memory is still 318.8MB. Free memory was 266.7MB in the beginning and 265.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:55:26,567 INFO L158 Benchmark]: RCFGBuilder took 411.40ms. Allocated memory is still 318.8MB. Free memory was 265.0MB in the beginning and 246.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-11-17 15:55:26,567 INFO L158 Benchmark]: TraceAbstraction took 567354.65ms. Allocated memory was 318.8MB in the beginning and 7.8GB in the end (delta: 7.5GB). Free memory was 245.5MB in the beginning and 5.7GB in the end (delta: -5.4GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-11-17 15:55:26,571 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 205.5MB. Free memory is still 151.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 226.85ms. Allocated memory is still 318.8MB. Free memory was 280.3MB in the beginning and 268.6MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.69ms. Allocated memory is still 318.8MB. Free memory was 268.6MB in the beginning and 266.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.92ms. Allocated memory is still 318.8MB. Free memory was 266.7MB in the beginning and 265.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 411.40ms. Allocated memory is still 318.8MB. Free memory was 265.0MB in the beginning and 246.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 567354.65ms. Allocated memory was 318.8MB in the beginning and 7.8GB in the end (delta: 7.5GB). Free memory was 245.5MB in the beginning and 5.7GB in the end (delta: -5.4GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 160 PlacesBefore, 56 PlacesAfterwards, 155 TransitionsBefore, 43 TransitionsAfterwards, 3612 CoEnabledTransitionPairs, 8 FixpointIterations, 63 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 12 ConcurrentYvCompositions, 8 ChoiceCompositions, 129 TotalNumberOfCompositions, 4501 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4501, independent: 4501, independent conditional: 0, independent unconditional: 4501, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2364, independent: 2364, independent conditional: 0, independent unconditional: 2364, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2364, independent: 2364, independent conditional: 0, independent unconditional: 2364, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4501, independent: 2137, independent conditional: 0, independent unconditional: 2137, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 2364, unknown conditional: 0, unknown unconditional: 2364] , Statistics on independence cache: Total cache size (in pairs): 264, Positive cache size: 264, Positive conditional cache size: 0, Positive unconditional cache size: 264, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 207 locations, 7 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: 567.2s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 361.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 65 mSolverCounterUnknown, 1325 SdHoareTripleChecker+Valid, 227.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1325 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 226.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 334 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4434 IncrementalHoareTripleChecker+Invalid, 4919 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 0 mSDtfsCounter, 4434 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 378 GetRequests, 284 SyntacticMatches, 8 SemanticMatches, 86 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 168.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4084occurred in iteration=15, InterpolantAutomatonStates: 95, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 115.8s InterpolantComputationTime, 725 NumberOfCodeBlocks, 725 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 856 ConstructedInterpolants, 0 QuantifiedInterpolants, 20520 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1302 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 23 InterpolantComputations, 11 PerfectInterpolantSequences, 10/28 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