/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/fibonacci.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:57:56,410 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:57:56,502 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 15:57:56,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:57:56,533 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:57:56,534 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:57:56,534 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:57:56,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:57:56,535 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:57:56,538 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:57:56,539 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:57:56,539 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:57:56,540 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:57:56,541 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:57:56,541 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:57:56,541 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:57:56,541 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:57:56,542 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:57:56,542 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:57:56,542 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:57:56,542 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:57:56,543 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:57:56,543 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:57:56,544 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:57:56,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:57:56,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:57:56,545 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:57:56,546 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:57:56,546 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:57:56,546 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:57:56,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:57:56,547 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:57:56,547 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:57:56,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:57:56,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:57:56,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:57:56,823 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:57:56,823 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:57:56,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-11-17 15:57:57,991 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:57:58,170 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:57:58,171 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-11-17 15:57:58,176 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94f5a3328/55023ccab8604bb9acd036b21058a99a/FLAG04b4b8f60 [2023-11-17 15:57:58,187 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94f5a3328/55023ccab8604bb9acd036b21058a99a [2023-11-17 15:57:58,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:57:58,190 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:57:58,191 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:57:58,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:57:58,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:57:58,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:57:58" (1/1) ... [2023-11-17 15:57:58,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1471f732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:58, skipping insertion in model container [2023-11-17 15:57:58,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:57:58" (1/1) ... [2023-11-17 15:57:58,216 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:57:58,342 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/fibonacci.wvr.c[2356,2369] [2023-11-17 15:57:58,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:57:58,357 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:57:58,375 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/fibonacci.wvr.c[2356,2369] [2023-11-17 15:57:58,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:57:58,391 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:57:58,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:58 WrapperNode [2023-11-17 15:57:58,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:57:58,393 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:57:58,393 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:57:58,393 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:57:58,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:58" (1/1) ... [2023-11-17 15:57:58,405 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:58" (1/1) ... [2023-11-17 15:57:58,433 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 172 [2023-11-17 15:57:58,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:57:58,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:57:58,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:57:58,434 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:57:58,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:58" (1/1) ... [2023-11-17 15:57:58,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:58" (1/1) ... [2023-11-17 15:57:58,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:58" (1/1) ... [2023-11-17 15:57:58,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:58" (1/1) ... [2023-11-17 15:57:58,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:58" (1/1) ... [2023-11-17 15:57:58,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:58" (1/1) ... [2023-11-17 15:57:58,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:58" (1/1) ... [2023-11-17 15:57:58,457 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:58" (1/1) ... [2023-11-17 15:57:58,460 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:57:58,460 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:57:58,460 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:57:58,461 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:57:58,461 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:58" (1/1) ... [2023-11-17 15:57:58,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:57:58,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:57:58,488 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 15:57:58,508 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 15:57:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:57:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:57:58,531 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:57:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:57:58,531 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:57:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:57:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:57:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:57:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:57:58,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:57:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:57:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:57:58,533 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 15:57:58,609 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:57:58,610 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:57:58,888 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:57:58,900 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:57:58,900 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 15:57:58,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:57:58 BoogieIcfgContainer [2023-11-17 15:57:58,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:57:58,904 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:57:58,904 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:57:58,907 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:57:58,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:57:58" (1/3) ... [2023-11-17 15:57:58,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a8b5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:57:58, skipping insertion in model container [2023-11-17 15:57:58,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:58" (2/3) ... [2023-11-17 15:57:58,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a8b5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:57:58, skipping insertion in model container [2023-11-17 15:57:58,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:57:58" (3/3) ... [2023-11-17 15:57:58,909 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2023-11-17 15:57:58,925 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:57:58,925 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:57:58,925 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:57:59,052 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 15:57:59,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 227 transitions, 468 flow [2023-11-17 15:57:59,247 INFO L124 PetriNetUnfolderBase]: 14/225 cut-off events. [2023-11-17 15:57:59,248 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:57:59,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 225 events. 14/225 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 346 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 147. Up to 2 conditions per place. [2023-11-17 15:57:59,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 227 transitions, 468 flow [2023-11-17 15:57:59,266 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 216 transitions, 444 flow [2023-11-17 15:57:59,269 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:57:59,290 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 216 transitions, 444 flow [2023-11-17 15:57:59,295 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 216 transitions, 444 flow [2023-11-17 15:57:59,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 216 transitions, 444 flow [2023-11-17 15:57:59,363 INFO L124 PetriNetUnfolderBase]: 14/216 cut-off events. [2023-11-17 15:57:59,363 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:57:59,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 216 events. 14/216 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 303 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 147. Up to 2 conditions per place. [2023-11-17 15:57:59,374 INFO L119 LiptonReduction]: Number of co-enabled transitions 11288 [2023-11-17 15:58:04,840 INFO L134 LiptonReduction]: Checked pairs total: 9537 [2023-11-17 15:58:04,840 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-11-17 15:58:04,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:58:04,859 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;@225106eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:58:04,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 15:58:04,862 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:58:04,863 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-11-17 15:58:04,863 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:58:04,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:04,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:04,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:04,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:04,868 INFO L85 PathProgramCache]: Analyzing trace with hash -53429661, now seen corresponding path program 1 times [2023-11-17 15:58:04,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:04,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021448621] [2023-11-17 15:58:04,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:04,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:05,544 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 15:58:05,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:05,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021448621] [2023-11-17 15:58:05,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021448621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:05,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:05,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:58:05,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447537723] [2023-11-17 15:58:05,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:05,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:05,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:05,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:05,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:05,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 478 [2023-11-17 15:58:05,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 5 states, 5 states have (on average 194.6) internal successors, (973), 5 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:05,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:05,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 478 [2023-11-17 15:58:05,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:05,725 INFO L124 PetriNetUnfolderBase]: 73/139 cut-off events. [2023-11-17 15:58:05,726 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-17 15:58:05,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 139 events. 73/139 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 386 event pairs, 15 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 222. Up to 79 conditions per place. [2023-11-17 15:58:05,730 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 28 selfloop transitions, 5 changer transitions 5/38 dead transitions. [2023-11-17 15:58:05,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 38 transitions, 182 flow [2023-11-17 15:58:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:05,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:05,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 999 transitions. [2023-11-17 15:58:05,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41799163179916315 [2023-11-17 15:58:05,752 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 999 transitions. [2023-11-17 15:58:05,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 999 transitions. [2023-11-17 15:58:05,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:05,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 999 transitions. [2023-11-17 15:58:05,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.8) internal successors, (999), 5 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:05,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:05,774 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:05,776 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 5 states and 999 transitions. [2023-11-17 15:58:05,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 38 transitions, 182 flow [2023-11-17 15:58:05,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 38 transitions, 162 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 15:58:05,782 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 68 flow [2023-11-17 15:58:05,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-11-17 15:58:05,787 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2023-11-17 15:58:05,787 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 68 flow [2023-11-17 15:58:05,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.6) internal successors, (973), 5 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:05,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:05,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:05,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:58:05,789 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:05,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:05,791 INFO L85 PathProgramCache]: Analyzing trace with hash 461995081, now seen corresponding path program 2 times [2023-11-17 15:58:05,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:05,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797616637] [2023-11-17 15:58:05,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:05,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:05,945 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 15:58:05,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:05,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797616637] [2023-11-17 15:58:05,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797616637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:05,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:05,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:58:05,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708069761] [2023-11-17 15:58:05,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:05,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:05,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:05,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:05,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:05,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 478 [2023-11-17 15:58:05,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 194.6) internal successors, (973), 5 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:05,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:05,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 478 [2023-11-17 15:58:05,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:06,066 INFO L124 PetriNetUnfolderBase]: 72/132 cut-off events. [2023-11-17 15:58:06,066 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-17 15:58:06,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 132 events. 72/132 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 355 event pairs, 15 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 355. Up to 79 conditions per place. [2023-11-17 15:58:06,067 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 26 selfloop transitions, 6 changer transitions 5/37 dead transitions. [2023-11-17 15:58:06,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 37 transitions, 192 flow [2023-11-17 15:58:06,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:06,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 997 transitions. [2023-11-17 15:58:06,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4171548117154812 [2023-11-17 15:58:06,072 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 997 transitions. [2023-11-17 15:58:06,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 997 transitions. [2023-11-17 15:58:06,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:06,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 997 transitions. [2023-11-17 15:58:06,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.4) internal successors, (997), 5 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:06,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:06,080 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:06,081 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 68 flow. Second operand 5 states and 997 transitions. [2023-11-17 15:58:06,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 37 transitions, 192 flow [2023-11-17 15:58:06,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 37 transitions, 190 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 15:58:06,085 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 100 flow [2023-11-17 15:58:06,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-11-17 15:58:06,086 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 8 predicate places. [2023-11-17 15:58:06,092 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 100 flow [2023-11-17 15:58:06,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.6) internal successors, (973), 5 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:06,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:06,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:06,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:58:06,096 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:06,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:06,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1237420451, now seen corresponding path program 1 times [2023-11-17 15:58:06,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:06,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499494624] [2023-11-17 15:58:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:06,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:06,184 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 15:58:06,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:06,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499494624] [2023-11-17 15:58:06,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499494624] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:06,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692739678] [2023-11-17 15:58:06,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:06,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:06,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:06,193 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 15:58:06,202 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 15:58:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:06,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 15:58:06,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:06,342 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 15:58:06,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:06,367 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 15:58:06,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692739678] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:06,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:06,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-17 15:58:06,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325670862] [2023-11-17 15:58:06,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:06,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:58:06,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:06,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:58:06,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:58:06,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:06,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 100 flow. Second operand has 10 states, 10 states have (on average 198.6) internal successors, (1986), 10 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:06,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:06,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:06,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:06,540 INFO L124 PetriNetUnfolderBase]: 109/184 cut-off events. [2023-11-17 15:58:06,541 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-17 15:58:06,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 184 events. 109/184 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 533 event pairs, 23 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 586. Up to 91 conditions per place. [2023-11-17 15:58:06,543 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 40 selfloop transitions, 23 changer transitions 0/63 dead transitions. [2023-11-17 15:58:06,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 63 transitions, 394 flow [2023-11-17 15:58:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:58:06,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:58:06,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2019 transitions. [2023-11-17 15:58:06,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42238493723849374 [2023-11-17 15:58:06,549 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2019 transitions. [2023-11-17 15:58:06,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2019 transitions. [2023-11-17 15:58:06,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:06,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2019 transitions. [2023-11-17 15:58:06,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 201.9) internal successors, (2019), 10 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:06,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:06,564 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:06,565 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 100 flow. Second operand 10 states and 2019 transitions. [2023-11-17 15:58:06,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 63 transitions, 394 flow [2023-11-17 15:58:06,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 63 transitions, 374 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-17 15:58:06,568 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 282 flow [2023-11-17 15:58:06,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=282, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2023-11-17 15:58:06,569 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 21 predicate places. [2023-11-17 15:58:06,569 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 282 flow [2023-11-17 15:58:06,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 198.6) internal successors, (1986), 10 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:06,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:06,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:06,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 15:58:06,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:06,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:06,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:06,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2094960453, now seen corresponding path program 2 times [2023-11-17 15:58:06,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:06,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456765703] [2023-11-17 15:58:06,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:06,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:06,857 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 15:58:06,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:06,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456765703] [2023-11-17 15:58:06,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456765703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:06,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792069068] [2023-11-17 15:58:06,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:58:06,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:06,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:06,861 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 15:58:06,888 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 15:58:06,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:06,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:06,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 15:58:06,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:06,972 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 15:58:06,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:06,996 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 15:58:06,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792069068] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:06,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:06,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-17 15:58:06,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416549002] [2023-11-17 15:58:06,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:06,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 15:58:06,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:06,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 15:58:06,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:58:07,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:07,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 282 flow. Second operand has 8 states, 8 states have (on average 198.75) internal successors, (1590), 8 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:07,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:07,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:07,140 INFO L124 PetriNetUnfolderBase]: 116/205 cut-off events. [2023-11-17 15:58:07,141 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2023-11-17 15:58:07,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 205 events. 116/205 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 645 event pairs, 18 based on Foata normal form. 4/209 useless extension candidates. Maximal degree in co-relation 644. Up to 71 conditions per place. [2023-11-17 15:58:07,143 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 48 selfloop transitions, 18 changer transitions 0/66 dead transitions. [2023-11-17 15:58:07,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 532 flow [2023-11-17 15:58:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:58:07,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:58:07,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1421 transitions. [2023-11-17 15:58:07,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246861924686193 [2023-11-17 15:58:07,147 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1421 transitions. [2023-11-17 15:58:07,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1421 transitions. [2023-11-17 15:58:07,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:07,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1421 transitions. [2023-11-17 15:58:07,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,157 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,157 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 282 flow. Second operand 7 states and 1421 transitions. [2023-11-17 15:58:07,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 532 flow [2023-11-17 15:58:07,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 486 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-11-17 15:58:07,165 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 291 flow [2023-11-17 15:58:07,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=291, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-11-17 15:58:07,167 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 29 predicate places. [2023-11-17 15:58:07,167 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 291 flow [2023-11-17 15:58:07,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 198.75) internal successors, (1590), 8 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:07,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:07,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-17 15:58:07,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-17 15:58:07,373 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:07,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:07,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1439635721, now seen corresponding path program 1 times [2023-11-17 15:58:07,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:07,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662826708] [2023-11-17 15:58:07,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:07,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:07,436 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 15:58:07,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:07,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662826708] [2023-11-17 15:58:07,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662826708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:07,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:07,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:58:07,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808995991] [2023-11-17 15:58:07,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:07,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:07,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:07,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:07,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:07,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:07,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 291 flow. Second operand has 5 states, 5 states have (on average 198.8) internal successors, (994), 5 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:07,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:07,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:07,521 INFO L124 PetriNetUnfolderBase]: 115/208 cut-off events. [2023-11-17 15:58:07,521 INFO L125 PetriNetUnfolderBase]: For 731/731 co-relation queries the response was YES. [2023-11-17 15:58:07,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 208 events. 115/208 cut-off events. For 731/731 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 676 event pairs, 30 based on Foata normal form. 4/212 useless extension candidates. Maximal degree in co-relation 686. Up to 128 conditions per place. [2023-11-17 15:58:07,523 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 47 selfloop transitions, 8 changer transitions 6/61 dead transitions. [2023-11-17 15:58:07,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 61 transitions, 509 flow [2023-11-17 15:58:07,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:07,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1017 transitions. [2023-11-17 15:58:07,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42552301255230124 [2023-11-17 15:58:07,526 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1017 transitions. [2023-11-17 15:58:07,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1017 transitions. [2023-11-17 15:58:07,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:07,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1017 transitions. [2023-11-17 15:58:07,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 203.4) internal successors, (1017), 5 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,533 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,533 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 291 flow. Second operand 5 states and 1017 transitions. [2023-11-17 15:58:07,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 61 transitions, 509 flow [2023-11-17 15:58:07,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 471 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-11-17 15:58:07,538 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 280 flow [2023-11-17 15:58:07,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-11-17 15:58:07,538 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 30 predicate places. [2023-11-17 15:58:07,538 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 280 flow [2023-11-17 15:58:07,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.8) internal successors, (994), 5 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:07,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:07,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:58:07,539 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:07,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:07,540 INFO L85 PathProgramCache]: Analyzing trace with hash 789038553, now seen corresponding path program 2 times [2023-11-17 15:58:07,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:07,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411292278] [2023-11-17 15:58:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:07,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:07,597 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 15:58:07,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:07,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411292278] [2023-11-17 15:58:07,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411292278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:07,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:07,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:58:07,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989661916] [2023-11-17 15:58:07,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:07,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:07,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:07,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:07,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:07,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:07,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 198.8) internal successors, (994), 5 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:07,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:07,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:07,679 INFO L124 PetriNetUnfolderBase]: 125/224 cut-off events. [2023-11-17 15:58:07,680 INFO L125 PetriNetUnfolderBase]: For 857/857 co-relation queries the response was YES. [2023-11-17 15:58:07,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 224 events. 125/224 cut-off events. For 857/857 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 713 event pairs, 30 based on Foata normal form. 4/228 useless extension candidates. Maximal degree in co-relation 950. Up to 164 conditions per place. [2023-11-17 15:58:07,682 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 32 selfloop transitions, 22 changer transitions 5/59 dead transitions. [2023-11-17 15:58:07,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 506 flow [2023-11-17 15:58:07,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:07,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:07,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1012 transitions. [2023-11-17 15:58:07,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42343096234309624 [2023-11-17 15:58:07,685 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1012 transitions. [2023-11-17 15:58:07,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1012 transitions. [2023-11-17 15:58:07,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:07,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1012 transitions. [2023-11-17 15:58:07,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.4) internal successors, (1012), 5 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,692 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,692 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 280 flow. Second operand 5 states and 1012 transitions. [2023-11-17 15:58:07,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 506 flow [2023-11-17 15:58:07,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 486 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-17 15:58:07,696 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 390 flow [2023-11-17 15:58:07,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=390, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2023-11-17 15:58:07,701 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 32 predicate places. [2023-11-17 15:58:07,701 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 390 flow [2023-11-17 15:58:07,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.8) internal successors, (994), 5 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:07,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:07,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:58:07,703 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:07,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:07,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1397046899, now seen corresponding path program 3 times [2023-11-17 15:58:07,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:07,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513474663] [2023-11-17 15:58:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:07,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:07,757 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 15:58:07,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:07,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513474663] [2023-11-17 15:58:07,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513474663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:07,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:07,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:58:07,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436818674] [2023-11-17 15:58:07,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:07,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:07,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:07,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:07,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:07,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:07,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 390 flow. Second operand has 5 states, 5 states have (on average 198.8) internal successors, (994), 5 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:07,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:07,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:07,834 INFO L124 PetriNetUnfolderBase]: 122/221 cut-off events. [2023-11-17 15:58:07,834 INFO L125 PetriNetUnfolderBase]: For 960/960 co-relation queries the response was YES. [2023-11-17 15:58:07,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 221 events. 122/221 cut-off events. For 960/960 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 696 event pairs, 29 based on Foata normal form. 2/223 useless extension candidates. Maximal degree in co-relation 969. Up to 137 conditions per place. [2023-11-17 15:58:07,836 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 40 selfloop transitions, 19 changer transitions 3/62 dead transitions. [2023-11-17 15:58:07,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 570 flow [2023-11-17 15:58:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:07,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1013 transitions. [2023-11-17 15:58:07,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42384937238493725 [2023-11-17 15:58:07,839 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1013 transitions. [2023-11-17 15:58:07,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1013 transitions. [2023-11-17 15:58:07,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:07,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1013 transitions. [2023-11-17 15:58:07,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,846 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,846 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 390 flow. Second operand 5 states and 1013 transitions. [2023-11-17 15:58:07,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 570 flow [2023-11-17 15:58:07,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 516 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-17 15:58:07,851 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 370 flow [2023-11-17 15:58:07,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=370, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-11-17 15:58:07,852 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 34 predicate places. [2023-11-17 15:58:07,852 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 370 flow [2023-11-17 15:58:07,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.8) internal successors, (994), 5 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:07,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:07,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:58:07,853 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:07,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:07,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1582164463, now seen corresponding path program 3 times [2023-11-17 15:58:07,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:07,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500844753] [2023-11-17 15:58:07,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:07,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:07,904 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 15:58:07,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:07,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500844753] [2023-11-17 15:58:07,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500844753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:07,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182992086] [2023-11-17 15:58:07,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:58:07,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:07,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:07,906 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 15:58:07,909 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 15:58:07,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:58:07,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:07,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 15:58:08,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:08,025 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 15:58:08,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:08,046 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 15:58:08,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182992086] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:08,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:08,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-17 15:58:08,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009713748] [2023-11-17 15:58:08,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:08,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 15:58:08,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:08,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 15:58:08,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:58:08,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:08,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 370 flow. Second operand has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:08,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:08,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:08,173 INFO L124 PetriNetUnfolderBase]: 126/225 cut-off events. [2023-11-17 15:58:08,174 INFO L125 PetriNetUnfolderBase]: For 670/670 co-relation queries the response was YES. [2023-11-17 15:58:08,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 225 events. 126/225 cut-off events. For 670/670 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 701 event pairs, 12 based on Foata normal form. 4/229 useless extension candidates. Maximal degree in co-relation 959. Up to 79 conditions per place. [2023-11-17 15:58:08,176 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 49 selfloop transitions, 25 changer transitions 0/74 dead transitions. [2023-11-17 15:58:08,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 74 transitions, 645 flow [2023-11-17 15:58:08,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:58:08,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:58:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1417 transitions. [2023-11-17 15:58:08,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4234907352062164 [2023-11-17 15:58:08,180 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1417 transitions. [2023-11-17 15:58:08,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1417 transitions. [2023-11-17 15:58:08,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:08,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1417 transitions. [2023-11-17 15:58:08,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.42857142857142) internal successors, (1417), 7 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,189 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,189 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 370 flow. Second operand 7 states and 1417 transitions. [2023-11-17 15:58:08,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 74 transitions, 645 flow [2023-11-17 15:58:08,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 74 transitions, 597 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-17 15:58:08,195 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 424 flow [2023-11-17 15:58:08,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2023-11-17 15:58:08,198 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 36 predicate places. [2023-11-17 15:58:08,199 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 424 flow [2023-11-17 15:58:08,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:08,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:08,208 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 15:58:08,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:08,405 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:08,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:08,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1039512931, now seen corresponding path program 4 times [2023-11-17 15:58:08,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:08,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157854482] [2023-11-17 15:58:08,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:08,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:08,454 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 15:58:08,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:08,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157854482] [2023-11-17 15:58:08,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157854482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:08,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:08,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:58:08,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169560998] [2023-11-17 15:58:08,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:08,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:08,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:08,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:08,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:08,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:08,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 424 flow. Second operand has 5 states, 5 states have (on average 198.8) internal successors, (994), 5 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:08,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:08,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:08,515 INFO L124 PetriNetUnfolderBase]: 125/226 cut-off events. [2023-11-17 15:58:08,515 INFO L125 PetriNetUnfolderBase]: For 763/763 co-relation queries the response was YES. [2023-11-17 15:58:08,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 226 events. 125/226 cut-off events. For 763/763 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 728 event pairs, 34 based on Foata normal form. 2/228 useless extension candidates. Maximal degree in co-relation 947. Up to 188 conditions per place. [2023-11-17 15:58:08,518 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 41 selfloop transitions, 15 changer transitions 2/58 dead transitions. [2023-11-17 15:58:08,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 561 flow [2023-11-17 15:58:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:08,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1010 transitions. [2023-11-17 15:58:08,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225941422594142 [2023-11-17 15:58:08,521 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1010 transitions. [2023-11-17 15:58:08,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1010 transitions. [2023-11-17 15:58:08,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:08,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1010 transitions. [2023-11-17 15:58:08,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,527 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,527 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 424 flow. Second operand 5 states and 1010 transitions. [2023-11-17 15:58:08,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 561 flow [2023-11-17 15:58:08,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 530 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 15:58:08,532 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 410 flow [2023-11-17 15:58:08,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=410, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-11-17 15:58:08,534 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 39 predicate places. [2023-11-17 15:58:08,534 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 410 flow [2023-11-17 15:58:08,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.8) internal successors, (994), 5 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:08,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:08,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:58:08,541 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:08,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:08,541 INFO L85 PathProgramCache]: Analyzing trace with hash -56497167, now seen corresponding path program 4 times [2023-11-17 15:58:08,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:08,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032877159] [2023-11-17 15:58:08,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:08,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:08,590 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 15:58:08,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:08,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032877159] [2023-11-17 15:58:08,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032877159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:08,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:08,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:58:08,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546771189] [2023-11-17 15:58:08,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:08,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:08,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:08,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:08,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:08,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:08,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 410 flow. Second operand has 5 states, 5 states have (on average 198.8) internal successors, (994), 5 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:08,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:08,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:08,670 INFO L124 PetriNetUnfolderBase]: 130/233 cut-off events. [2023-11-17 15:58:08,670 INFO L125 PetriNetUnfolderBase]: For 770/770 co-relation queries the response was YES. [2023-11-17 15:58:08,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1115 conditions, 233 events. 130/233 cut-off events. For 770/770 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 744 event pairs, 40 based on Foata normal form. 4/237 useless extension candidates. Maximal degree in co-relation 969. Up to 192 conditions per place. [2023-11-17 15:58:08,672 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 44 selfloop transitions, 16 changer transitions 0/60 dead transitions. [2023-11-17 15:58:08,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 60 transitions, 578 flow [2023-11-17 15:58:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:08,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:08,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1012 transitions. [2023-11-17 15:58:08,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42343096234309624 [2023-11-17 15:58:08,675 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1012 transitions. [2023-11-17 15:58:08,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1012 transitions. [2023-11-17 15:58:08,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:08,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1012 transitions. [2023-11-17 15:58:08,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.4) internal successors, (1012), 5 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,680 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,681 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 410 flow. Second operand 5 states and 1012 transitions. [2023-11-17 15:58:08,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 60 transitions, 578 flow [2023-11-17 15:58:08,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 546 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:58:08,685 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 421 flow [2023-11-17 15:58:08,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=421, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-11-17 15:58:08,686 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 39 predicate places. [2023-11-17 15:58:08,686 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 421 flow [2023-11-17 15:58:08,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.8) internal successors, (994), 5 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:08,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:08,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:58:08,687 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:08,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:08,687 INFO L85 PathProgramCache]: Analyzing trace with hash -657295333, now seen corresponding path program 5 times [2023-11-17 15:58:08,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:08,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820827337] [2023-11-17 15:58:08,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:08,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:08,735 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 15:58:08,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:08,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820827337] [2023-11-17 15:58:08,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820827337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:08,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:08,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:58:08,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441672326] [2023-11-17 15:58:08,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:08,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:08,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:08,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:08,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:08,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:08,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 421 flow. Second operand has 5 states, 5 states have (on average 198.8) internal successors, (994), 5 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:08,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:08,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:08,807 INFO L124 PetriNetUnfolderBase]: 126/229 cut-off events. [2023-11-17 15:58:08,807 INFO L125 PetriNetUnfolderBase]: For 753/753 co-relation queries the response was YES. [2023-11-17 15:58:08,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 229 events. 126/229 cut-off events. For 753/753 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 739 event pairs, 37 based on Foata normal form. 4/233 useless extension candidates. Maximal degree in co-relation 943. Up to 183 conditions per place. [2023-11-17 15:58:08,809 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 40 selfloop transitions, 15 changer transitions 4/59 dead transitions. [2023-11-17 15:58:08,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 558 flow [2023-11-17 15:58:08,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:08,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1011 transitions. [2023-11-17 15:58:08,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42301255230125523 [2023-11-17 15:58:08,813 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1011 transitions. [2023-11-17 15:58:08,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1011 transitions. [2023-11-17 15:58:08,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:08,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1011 transitions. [2023-11-17 15:58:08,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.2) internal successors, (1011), 5 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,818 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,818 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 421 flow. Second operand 5 states and 1011 transitions. [2023-11-17 15:58:08,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 558 flow [2023-11-17 15:58:08,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 534 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 15:58:08,823 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 411 flow [2023-11-17 15:58:08,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=411, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-11-17 15:58:08,823 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 41 predicate places. [2023-11-17 15:58:08,823 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 411 flow [2023-11-17 15:58:08,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.8) internal successors, (994), 5 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:08,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:08,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 15:58:08,825 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:08,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:08,825 INFO L85 PathProgramCache]: Analyzing trace with hash -886511189, now seen corresponding path program 5 times [2023-11-17 15:58:08,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:08,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932899595] [2023-11-17 15:58:08,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:08,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:08,872 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 15:58:08,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:08,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932899595] [2023-11-17 15:58:08,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932899595] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:08,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800044543] [2023-11-17 15:58:08,873 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:58:08,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:08,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:08,888 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 15:58:08,893 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 15:58:08,968 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:08,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:08,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 15:58:08,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:09,001 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 15:58:09,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:09,022 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 15:58:09,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800044543] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:09,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:09,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-17 15:58:09,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301842741] [2023-11-17 15:58:09,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:09,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:58:09,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:09,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:58:09,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:58:09,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:09,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 411 flow. Second operand has 10 states, 10 states have (on average 198.4) internal successors, (1984), 10 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:09,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:09,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:09,138 INFO L124 PetriNetUnfolderBase]: 119/218 cut-off events. [2023-11-17 15:58:09,139 INFO L125 PetriNetUnfolderBase]: For 828/828 co-relation queries the response was YES. [2023-11-17 15:58:09,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007 conditions, 218 events. 119/218 cut-off events. For 828/828 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 689 event pairs, 34 based on Foata normal form. 6/224 useless extension candidates. Maximal degree in co-relation 951. Up to 168 conditions per place. [2023-11-17 15:58:09,141 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 41 selfloop transitions, 19 changer transitions 0/60 dead transitions. [2023-11-17 15:58:09,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 553 flow [2023-11-17 15:58:09,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:58:09,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:58:09,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1212 transitions. [2023-11-17 15:58:09,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225941422594142 [2023-11-17 15:58:09,144 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1212 transitions. [2023-11-17 15:58:09,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1212 transitions. [2023-11-17 15:58:09,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:09,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1212 transitions. [2023-11-17 15:58:09,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,151 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,151 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 411 flow. Second operand 6 states and 1212 transitions. [2023-11-17 15:58:09,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 553 flow [2023-11-17 15:58:09,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 507 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-17 15:58:09,155 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 396 flow [2023-11-17 15:58:09,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-11-17 15:58:09,156 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 38 predicate places. [2023-11-17 15:58:09,156 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 396 flow [2023-11-17 15:58:09,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 198.4) internal successors, (1984), 10 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:09,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:09,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-17 15:58:09,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:09,361 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:09,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:09,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1217155207, now seen corresponding path program 6 times [2023-11-17 15:58:09,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:09,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690100045] [2023-11-17 15:58:09,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:09,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:09,408 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 15:58:09,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:09,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690100045] [2023-11-17 15:58:09,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690100045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:09,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:09,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:58:09,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328199273] [2023-11-17 15:58:09,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:09,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:09,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:09,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:09,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:09,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:09,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 396 flow. Second operand has 5 states, 5 states have (on average 198.8) internal successors, (994), 5 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:09,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:09,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:09,477 INFO L124 PetriNetUnfolderBase]: 115/206 cut-off events. [2023-11-17 15:58:09,477 INFO L125 PetriNetUnfolderBase]: For 630/630 co-relation queries the response was YES. [2023-11-17 15:58:09,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 206 events. 115/206 cut-off events. For 630/630 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 626 event pairs, 31 based on Foata normal form. 2/208 useless extension candidates. Maximal degree in co-relation 812. Up to 153 conditions per place. [2023-11-17 15:58:09,479 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 36 selfloop transitions, 17 changer transitions 2/55 dead transitions. [2023-11-17 15:58:09,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 518 flow [2023-11-17 15:58:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:09,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:09,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1008 transitions. [2023-11-17 15:58:09,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217573221757322 [2023-11-17 15:58:09,482 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1008 transitions. [2023-11-17 15:58:09,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1008 transitions. [2023-11-17 15:58:09,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:09,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1008 transitions. [2023-11-17 15:58:09,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 201.6) internal successors, (1008), 5 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,488 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,488 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 396 flow. Second operand 5 states and 1008 transitions. [2023-11-17 15:58:09,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 518 flow [2023-11-17 15:58:09,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 467 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-17 15:58:09,492 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 363 flow [2023-11-17 15:58:09,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=363, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2023-11-17 15:58:09,492 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 38 predicate places. [2023-11-17 15:58:09,492 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 363 flow [2023-11-17 15:58:09,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.8) internal successors, (994), 5 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:09,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:09,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 15:58:09,493 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:09,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:09,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1931875331, now seen corresponding path program 6 times [2023-11-17 15:58:09,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:09,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943251972] [2023-11-17 15:58:09,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:09,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:09,539 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 15:58:09,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:09,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943251972] [2023-11-17 15:58:09,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943251972] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:09,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330773082] [2023-11-17 15:58:09,540 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:58:09,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:09,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:09,541 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 15:58:09,546 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 15:58:09,616 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 15:58:09,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:09,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 15:58:09,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:09,649 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 15:58:09,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:09,671 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 15:58:09,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330773082] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:09,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:09,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-17 15:58:09,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746692505] [2023-11-17 15:58:09,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:09,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:58:09,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:09,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:58:09,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:58:09,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:09,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 363 flow. Second operand has 10 states, 10 states have (on average 198.5) internal successors, (1985), 10 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:09,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:09,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:09,803 INFO L124 PetriNetUnfolderBase]: 110/193 cut-off events. [2023-11-17 15:58:09,804 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2023-11-17 15:58:09,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 193 events. 110/193 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 570 event pairs, 14 based on Foata normal form. 4/197 useless extension candidates. Maximal degree in co-relation 784. Up to 68 conditions per place. [2023-11-17 15:58:09,805 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 43 selfloop transitions, 28 changer transitions 0/71 dead transitions. [2023-11-17 15:58:09,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 71 transitions, 606 flow [2023-11-17 15:58:09,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:58:09,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:58:09,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2009 transitions. [2023-11-17 15:58:09,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4202928870292887 [2023-11-17 15:58:09,810 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2009 transitions. [2023-11-17 15:58:09,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2009 transitions. [2023-11-17 15:58:09,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:09,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2009 transitions. [2023-11-17 15:58:09,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 200.9) internal successors, (2009), 10 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,820 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,820 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 363 flow. Second operand 10 states and 2009 transitions. [2023-11-17 15:58:09,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 71 transitions, 606 flow [2023-11-17 15:58:09,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 71 transitions, 565 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 15:58:09,823 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 423 flow [2023-11-17 15:58:09,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=423, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-11-17 15:58:09,824 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 41 predicate places. [2023-11-17 15:58:09,824 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 423 flow [2023-11-17 15:58:09,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 198.5) internal successors, (1985), 10 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:09,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:09,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:10,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-17 15:58:10,030 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:10,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:10,031 INFO L85 PathProgramCache]: Analyzing trace with hash -158939707, now seen corresponding path program 1 times [2023-11-17 15:58:10,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:10,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195514201] [2023-11-17 15:58:10,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:10,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:10,198 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 15:58:10,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:10,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195514201] [2023-11-17 15:58:10,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195514201] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:10,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439854418] [2023-11-17 15:58:10,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:10,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:10,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:10,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:10,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 15:58:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:10,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 15:58:10,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:10,386 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 15:58:10,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:10,526 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 15:58:10,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439854418] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:10,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:10,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-17 15:58:10,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096516907] [2023-11-17 15:58:10,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:10,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:10,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:10,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:10,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:58:10,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:58:10,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 423 flow. Second operand has 12 states, 12 states have (on average 189.0) internal successors, (2268), 12 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:10,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:10,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:58:10,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:10,723 INFO L124 PetriNetUnfolderBase]: 161/291 cut-off events. [2023-11-17 15:58:10,723 INFO L125 PetriNetUnfolderBase]: For 701/701 co-relation queries the response was YES. [2023-11-17 15:58:10,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1320 conditions, 291 events. 161/291 cut-off events. For 701/701 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1022 event pairs, 16 based on Foata normal form. 1/292 useless extension candidates. Maximal degree in co-relation 1262. Up to 185 conditions per place. [2023-11-17 15:58:10,726 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 69 selfloop transitions, 20 changer transitions 5/94 dead transitions. [2023-11-17 15:58:10,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 94 transitions, 824 flow [2023-11-17 15:58:10,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:58:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:58:10,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1352 transitions. [2023-11-17 15:58:10,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40406455469216973 [2023-11-17 15:58:10,730 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1352 transitions. [2023-11-17 15:58:10,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1352 transitions. [2023-11-17 15:58:10,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:10,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1352 transitions. [2023-11-17 15:58:10,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 193.14285714285714) internal successors, (1352), 7 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:10,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:10,736 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:10,736 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 423 flow. Second operand 7 states and 1352 transitions. [2023-11-17 15:58:10,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 94 transitions, 824 flow [2023-11-17 15:58:10,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 724 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-11-17 15:58:10,741 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 514 flow [2023-11-17 15:58:10,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=514, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2023-11-17 15:58:10,741 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 44 predicate places. [2023-11-17 15:58:10,741 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 514 flow [2023-11-17 15:58:10,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 189.0) internal successors, (2268), 12 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:10,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:10,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:10,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:10,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-17 15:58:10,948 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:10,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:10,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1532222787, now seen corresponding path program 2 times [2023-11-17 15:58:10,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:10,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052134941] [2023-11-17 15:58:10,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:10,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:11,136 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 15:58:11,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:11,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052134941] [2023-11-17 15:58:11,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052134941] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:11,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403819336] [2023-11-17 15:58:11,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:58:11,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:11,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:11,138 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:11,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 15:58:11,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:11,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:11,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 15:58:11,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:11,340 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 15:58:11,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:11,485 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 15:58:11,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403819336] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:11,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:11,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-17 15:58:11,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660554489] [2023-11-17 15:58:11,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:11,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:11,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:11,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:11,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:58:11,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:58:11,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 514 flow. Second operand has 12 states, 12 states have (on average 188.83333333333334) internal successors, (2266), 12 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:11,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:11,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:58:11,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:11,701 INFO L124 PetriNetUnfolderBase]: 166/300 cut-off events. [2023-11-17 15:58:11,701 INFO L125 PetriNetUnfolderBase]: For 833/833 co-relation queries the response was YES. [2023-11-17 15:58:11,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1417 conditions, 300 events. 166/300 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1066 event pairs, 18 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 1391. Up to 213 conditions per place. [2023-11-17 15:58:11,704 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 67 selfloop transitions, 20 changer transitions 5/92 dead transitions. [2023-11-17 15:58:11,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 92 transitions, 815 flow [2023-11-17 15:58:11,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:58:11,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:58:11,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1348 transitions. [2023-11-17 15:58:11,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4028690974297669 [2023-11-17 15:58:11,707 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1348 transitions. [2023-11-17 15:58:11,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1348 transitions. [2023-11-17 15:58:11,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:11,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1348 transitions. [2023-11-17 15:58:11,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 192.57142857142858) internal successors, (1348), 7 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:11,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:11,714 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:11,714 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 514 flow. Second operand 7 states and 1348 transitions. [2023-11-17 15:58:11,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 92 transitions, 815 flow [2023-11-17 15:58:11,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 92 transitions, 751 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-11-17 15:58:11,719 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 568 flow [2023-11-17 15:58:11,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=568, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2023-11-17 15:58:11,719 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 49 predicate places. [2023-11-17 15:58:11,719 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 568 flow [2023-11-17 15:58:11,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 188.83333333333334) internal successors, (2266), 12 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:11,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:11,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:11,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:11,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:11,926 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:11,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:11,926 INFO L85 PathProgramCache]: Analyzing trace with hash 912967767, now seen corresponding path program 3 times [2023-11-17 15:58:11,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:11,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984076998] [2023-11-17 15:58:11,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:11,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:12,112 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 15:58:12,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:12,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984076998] [2023-11-17 15:58:12,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984076998] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:12,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395632708] [2023-11-17 15:58:12,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:58:12,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:12,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:12,114 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:12,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 15:58:12,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:58:12,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:12,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 15:58:12,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:12,292 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 15:58:12,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:12,449 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 15:58:12,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395632708] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:12,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:12,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-17 15:58:12,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736988579] [2023-11-17 15:58:12,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:12,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 15:58:12,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:12,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 15:58:12,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-17 15:58:12,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:58:12,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 568 flow. Second operand has 14 states, 14 states have (on average 188.85714285714286) internal successors, (2644), 14 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:12,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:12,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:58:12,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:12,647 INFO L124 PetriNetUnfolderBase]: 163/291 cut-off events. [2023-11-17 15:58:12,647 INFO L125 PetriNetUnfolderBase]: For 844/844 co-relation queries the response was YES. [2023-11-17 15:58:12,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1384 conditions, 291 events. 163/291 cut-off events. For 844/844 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1015 event pairs, 16 based on Foata normal form. 1/292 useless extension candidates. Maximal degree in co-relation 1359. Up to 189 conditions per place. [2023-11-17 15:58:12,650 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 67 selfloop transitions, 21 changer transitions 5/93 dead transitions. [2023-11-17 15:58:12,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 93 transitions, 837 flow [2023-11-17 15:58:12,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:58:12,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:58:12,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1350 transitions. [2023-11-17 15:58:12,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40346682606096834 [2023-11-17 15:58:12,656 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1350 transitions. [2023-11-17 15:58:12,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1350 transitions. [2023-11-17 15:58:12,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:12,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1350 transitions. [2023-11-17 15:58:12,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 192.85714285714286) internal successors, (1350), 7 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:12,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:12,664 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:12,664 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 568 flow. Second operand 7 states and 1350 transitions. [2023-11-17 15:58:12,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 93 transitions, 837 flow [2023-11-17 15:58:12,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 93 transitions, 801 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-17 15:58:12,669 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 605 flow [2023-11-17 15:58:12,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=605, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2023-11-17 15:58:12,670 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 53 predicate places. [2023-11-17 15:58:12,670 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 605 flow [2023-11-17 15:58:12,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 188.85714285714286) internal successors, (2644), 14 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:12,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:12,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:12,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:12,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-17 15:58:12,876 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:12,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:12,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1395243685, now seen corresponding path program 4 times [2023-11-17 15:58:12,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:12,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344072785] [2023-11-17 15:58:12,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:12,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:13,036 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 15:58:13,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:13,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344072785] [2023-11-17 15:58:13,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344072785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:13,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636744711] [2023-11-17 15:58:13,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:58:13,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:13,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:13,038 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:13,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 15:58:13,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:58:13,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:13,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 15:58:13,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:13,224 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 15:58:13,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:13,336 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 15:58:13,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636744711] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:13,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:13,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-17 15:58:13,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555111945] [2023-11-17 15:58:13,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:13,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:13,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:13,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:13,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:58:13,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:58:13,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 605 flow. Second operand has 12 states, 12 states have (on average 189.16666666666666) internal successors, (2270), 12 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:13,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:13,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:58:13,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:13,505 INFO L124 PetriNetUnfolderBase]: 186/332 cut-off events. [2023-11-17 15:58:13,505 INFO L125 PetriNetUnfolderBase]: For 1055/1055 co-relation queries the response was YES. [2023-11-17 15:58:13,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1592 conditions, 332 events. 186/332 cut-off events. For 1055/1055 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1214 event pairs, 16 based on Foata normal form. 1/333 useless extension candidates. Maximal degree in co-relation 1565. Up to 273 conditions per place. [2023-11-17 15:58:13,508 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 73 selfloop transitions, 20 changer transitions 5/98 dead transitions. [2023-11-17 15:58:13,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 944 flow [2023-11-17 15:58:13,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:58:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:58:13,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1340 transitions. [2023-11-17 15:58:13,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004781829049611 [2023-11-17 15:58:13,511 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1340 transitions. [2023-11-17 15:58:13,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1340 transitions. [2023-11-17 15:58:13,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:13,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1340 transitions. [2023-11-17 15:58:13,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.42857142857142) internal successors, (1340), 7 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:13,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:13,536 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:13,536 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 605 flow. Second operand 7 states and 1340 transitions. [2023-11-17 15:58:13,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 944 flow [2023-11-17 15:58:13,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 899 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-17 15:58:13,542 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 739 flow [2023-11-17 15:58:13,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=739, PETRI_PLACES=78, PETRI_TRANSITIONS=85} [2023-11-17 15:58:13,543 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 58 predicate places. [2023-11-17 15:58:13,543 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 739 flow [2023-11-17 15:58:13,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 189.16666666666666) internal successors, (2270), 12 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:13,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:13,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:13,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:13,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-17 15:58:13,754 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:13,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:13,754 INFO L85 PathProgramCache]: Analyzing trace with hash 556344387, now seen corresponding path program 5 times [2023-11-17 15:58:13,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:13,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282900678] [2023-11-17 15:58:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:13,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:13,905 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 15:58:13,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:13,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282900678] [2023-11-17 15:58:13,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282900678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:13,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810446019] [2023-11-17 15:58:13,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:58:13,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:13,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:13,907 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:13,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 15:58:13,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 15:58:13,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:13,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 15:58:13,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:14,074 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 15:58:14,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:14,199 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 15:58:14,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810446019] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:14,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:14,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-17 15:58:14,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762642547] [2023-11-17 15:58:14,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:14,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:58:14,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:14,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:58:14,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:58:14,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:58:14,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 85 transitions, 739 flow. Second operand has 13 states, 13 states have (on average 189.07692307692307) internal successors, (2458), 13 states have internal predecessors, (2458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:14,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:14,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:58:14,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:14,367 INFO L124 PetriNetUnfolderBase]: 200/360 cut-off events. [2023-11-17 15:58:14,367 INFO L125 PetriNetUnfolderBase]: For 1274/1274 co-relation queries the response was YES. [2023-11-17 15:58:14,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1820 conditions, 360 events. 200/360 cut-off events. For 1274/1274 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1358 event pairs, 16 based on Foata normal form. 1/361 useless extension candidates. Maximal degree in co-relation 1787. Up to 277 conditions per place. [2023-11-17 15:58:14,370 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 81 selfloop transitions, 21 changer transitions 5/107 dead transitions. [2023-11-17 15:58:14,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 107 transitions, 1081 flow [2023-11-17 15:58:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:58:14,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:58:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1346 transitions. [2023-11-17 15:58:14,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40227136879856545 [2023-11-17 15:58:14,372 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1346 transitions. [2023-11-17 15:58:14,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1346 transitions. [2023-11-17 15:58:14,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:14,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1346 transitions. [2023-11-17 15:58:14,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 192.28571428571428) internal successors, (1346), 7 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:14,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:14,378 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:14,378 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 739 flow. Second operand 7 states and 1346 transitions. [2023-11-17 15:58:14,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 107 transitions, 1081 flow [2023-11-17 15:58:14,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 107 transitions, 1042 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-17 15:58:14,387 INFO L231 Difference]: Finished difference. Result has 84 places, 89 transitions, 814 flow [2023-11-17 15:58:14,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=814, PETRI_PLACES=84, PETRI_TRANSITIONS=89} [2023-11-17 15:58:14,388 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 64 predicate places. [2023-11-17 15:58:14,388 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 89 transitions, 814 flow [2023-11-17 15:58:14,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 189.07692307692307) internal successors, (2458), 13 states have internal predecessors, (2458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:14,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:14,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:14,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:14,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:14,599 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:14,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:14,600 INFO L85 PathProgramCache]: Analyzing trace with hash 528638757, now seen corresponding path program 6 times [2023-11-17 15:58:14,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:14,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86743590] [2023-11-17 15:58:14,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:14,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:14,766 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 15:58:14,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:14,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86743590] [2023-11-17 15:58:14,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86743590] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:14,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597309843] [2023-11-17 15:58:14,767 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:58:14,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:14,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:14,768 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:14,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 15:58:14,846 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 15:58:14,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:14,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 15:58:14,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:14,988 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 15:58:14,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:15,116 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 15:58:15,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597309843] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:15,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:15,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-17 15:58:15,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918356813] [2023-11-17 15:58:15,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:15,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 15:58:15,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:15,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 15:58:15,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-17 15:58:15,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:58:15,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 89 transitions, 814 flow. Second operand has 14 states, 14 states have (on average 188.85714285714286) internal successors, (2644), 14 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:15,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:15,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:58:15,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:15,298 INFO L124 PetriNetUnfolderBase]: 197/351 cut-off events. [2023-11-17 15:58:15,298 INFO L125 PetriNetUnfolderBase]: For 1489/1489 co-relation queries the response was YES. [2023-11-17 15:58:15,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1850 conditions, 351 events. 197/351 cut-off events. For 1489/1489 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1307 event pairs, 16 based on Foata normal form. 1/352 useless extension candidates. Maximal degree in co-relation 1817. Up to 277 conditions per place. [2023-11-17 15:58:15,302 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 79 selfloop transitions, 22 changer transitions 5/106 dead transitions. [2023-11-17 15:58:15,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 106 transitions, 1120 flow [2023-11-17 15:58:15,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:58:15,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:58:15,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1344 transitions. [2023-11-17 15:58:15,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.401673640167364 [2023-11-17 15:58:15,304 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1344 transitions. [2023-11-17 15:58:15,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1344 transitions. [2023-11-17 15:58:15,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:15,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1344 transitions. [2023-11-17 15:58:15,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 192.0) internal successors, (1344), 7 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:15,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:15,309 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:15,309 INFO L175 Difference]: Start difference. First operand has 84 places, 89 transitions, 814 flow. Second operand 7 states and 1344 transitions. [2023-11-17 15:58:15,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 106 transitions, 1120 flow [2023-11-17 15:58:15,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 106 transitions, 1047 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-11-17 15:58:15,316 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 839 flow [2023-11-17 15:58:15,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=839, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2023-11-17 15:58:15,317 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 68 predicate places. [2023-11-17 15:58:15,317 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 839 flow [2023-11-17 15:58:15,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 188.85714285714286) internal successors, (2644), 14 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:15,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:15,318 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:15,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:15,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:15,523 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:15,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:15,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1767238555, now seen corresponding path program 7 times [2023-11-17 15:58:15,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:15,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678236184] [2023-11-17 15:58:15,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:15,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:15,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:15,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678236184] [2023-11-17 15:58:15,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678236184] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:15,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215457832] [2023-11-17 15:58:15,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:58:15,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:15,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:15,585 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:15,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-17 15:58:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:15,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:15,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:15,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:15,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215457832] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:15,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:15,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-17 15:58:15,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469097227] [2023-11-17 15:58:15,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:15,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:58:15,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:15,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:58:15,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:58:15,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:15,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 839 flow. Second operand has 11 states, 11 states have (on average 198.54545454545453) internal successors, (2184), 11 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:15,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:15,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:15,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:15,919 INFO L124 PetriNetUnfolderBase]: 214/385 cut-off events. [2023-11-17 15:58:15,919 INFO L125 PetriNetUnfolderBase]: For 1819/1819 co-relation queries the response was YES. [2023-11-17 15:58:15,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2033 conditions, 385 events. 214/385 cut-off events. For 1819/1819 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1532 event pairs, 31 based on Foata normal form. 4/389 useless extension candidates. Maximal degree in co-relation 1995. Up to 155 conditions per place. [2023-11-17 15:58:15,923 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 76 selfloop transitions, 34 changer transitions 11/121 dead transitions. [2023-11-17 15:58:15,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 121 transitions, 1276 flow [2023-11-17 15:58:15,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:58:15,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:58:15,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1420 transitions. [2023-11-17 15:58:15,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42438732815301855 [2023-11-17 15:58:15,926 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1420 transitions. [2023-11-17 15:58:15,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1420 transitions. [2023-11-17 15:58:15,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:15,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1420 transitions. [2023-11-17 15:58:15,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.85714285714286) internal successors, (1420), 7 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:15,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:15,933 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:15,933 INFO L175 Difference]: Start difference. First operand has 88 places, 91 transitions, 839 flow. Second operand 7 states and 1420 transitions. [2023-11-17 15:58:15,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 121 transitions, 1276 flow [2023-11-17 15:58:15,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 121 transitions, 1217 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-11-17 15:58:15,942 INFO L231 Difference]: Finished difference. Result has 93 places, 92 transitions, 909 flow [2023-11-17 15:58:15,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=909, PETRI_PLACES=93, PETRI_TRANSITIONS=92} [2023-11-17 15:58:15,943 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 73 predicate places. [2023-11-17 15:58:15,943 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 92 transitions, 909 flow [2023-11-17 15:58:15,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 198.54545454545453) internal successors, (2184), 11 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:15,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:15,944 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:15,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:16,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-17 15:58:16,153 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:16,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:16,153 INFO L85 PathProgramCache]: Analyzing trace with hash -64319361, now seen corresponding path program 8 times [2023-11-17 15:58:16,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:16,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545392196] [2023-11-17 15:58:16,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:16,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:16,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:16,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545392196] [2023-11-17 15:58:16,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545392196] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:16,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461291837] [2023-11-17 15:58:16,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:58:16,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:16,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:16,213 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:16,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-17 15:58:16,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:16,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:16,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:16,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:16,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:16,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461291837] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:16,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:16,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-17 15:58:16,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489883167] [2023-11-17 15:58:16,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:16,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:58:16,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:16,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:58:16,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:58:16,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:16,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 909 flow. Second operand has 11 states, 11 states have (on average 198.1818181818182) internal successors, (2180), 11 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:16,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:16,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:16,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:16,565 INFO L124 PetriNetUnfolderBase]: 221/390 cut-off events. [2023-11-17 15:58:16,565 INFO L125 PetriNetUnfolderBase]: For 2275/2275 co-relation queries the response was YES. [2023-11-17 15:58:16,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 390 events. 221/390 cut-off events. For 2275/2275 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1514 event pairs, 19 based on Foata normal form. 6/396 useless extension candidates. Maximal degree in co-relation 2093. Up to 101 conditions per place. [2023-11-17 15:58:16,569 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 83 selfloop transitions, 49 changer transitions 0/132 dead transitions. [2023-11-17 15:58:16,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 132 transitions, 1429 flow [2023-11-17 15:58:16,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:58:16,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:58:16,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2024 transitions. [2023-11-17 15:58:16,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42343096234309624 [2023-11-17 15:58:16,572 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2024 transitions. [2023-11-17 15:58:16,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2024 transitions. [2023-11-17 15:58:16,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:16,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2024 transitions. [2023-11-17 15:58:16,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 202.4) internal successors, (2024), 10 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:16,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:16,578 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:16,578 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 909 flow. Second operand 10 states and 2024 transitions. [2023-11-17 15:58:16,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 132 transitions, 1429 flow [2023-11-17 15:58:16,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 132 transitions, 1379 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-17 15:58:16,590 INFO L231 Difference]: Finished difference. Result has 100 places, 99 transitions, 1071 flow [2023-11-17 15:58:16,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1071, PETRI_PLACES=100, PETRI_TRANSITIONS=99} [2023-11-17 15:58:16,590 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 80 predicate places. [2023-11-17 15:58:16,590 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 99 transitions, 1071 flow [2023-11-17 15:58:16,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 198.1818181818182) internal successors, (2180), 11 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:16,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:16,591 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:16,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:16,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-17 15:58:16,796 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:16,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:16,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1884401259, now seen corresponding path program 9 times [2023-11-17 15:58:16,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:16,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520963269] [2023-11-17 15:58:16,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:16,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:16,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:16,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520963269] [2023-11-17 15:58:16,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520963269] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:16,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190179560] [2023-11-17 15:58:16,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:58:16,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:16,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:16,886 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:16,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-17 15:58:16,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 15:58:16,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:16,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:16,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:17,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:17,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:17,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:17,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190179560] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:17,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:17,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-17 15:58:17,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479905601] [2023-11-17 15:58:17,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:17,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:17,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:17,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:17,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:58:17,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:17,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 1071 flow. Second operand has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:17,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:17,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:17,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:17,370 INFO L124 PetriNetUnfolderBase]: 269/464 cut-off events. [2023-11-17 15:58:17,371 INFO L125 PetriNetUnfolderBase]: For 4200/4200 co-relation queries the response was YES. [2023-11-17 15:58:17,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2874 conditions, 464 events. 269/464 cut-off events. For 4200/4200 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1822 event pairs, 30 based on Foata normal form. 14/478 useless extension candidates. Maximal degree in co-relation 2795. Up to 178 conditions per place. [2023-11-17 15:58:17,377 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 78 selfloop transitions, 74 changer transitions 0/152 dead transitions. [2023-11-17 15:58:17,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 152 transitions, 1893 flow [2023-11-17 15:58:17,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 15:58:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 15:58:17,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3218 transitions. [2023-11-17 15:58:17,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42076359832635984 [2023-11-17 15:58:17,381 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3218 transitions. [2023-11-17 15:58:17,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3218 transitions. [2023-11-17 15:58:17,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:17,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3218 transitions. [2023-11-17 15:58:17,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 201.125) internal successors, (3218), 16 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:17,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 478.0) internal successors, (8126), 17 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:17,393 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 478.0) internal successors, (8126), 17 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:17,393 INFO L175 Difference]: Start difference. First operand has 100 places, 99 transitions, 1071 flow. Second operand 16 states and 3218 transitions. [2023-11-17 15:58:17,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 152 transitions, 1893 flow [2023-11-17 15:58:17,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 152 transitions, 1725 flow, removed 52 selfloop flow, removed 3 redundant places. [2023-11-17 15:58:17,409 INFO L231 Difference]: Finished difference. Result has 120 places, 123 transitions, 1506 flow [2023-11-17 15:58:17,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1506, PETRI_PLACES=120, PETRI_TRANSITIONS=123} [2023-11-17 15:58:17,410 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 100 predicate places. [2023-11-17 15:58:17,410 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 123 transitions, 1506 flow [2023-11-17 15:58:17,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:17,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:17,410 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:17,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:17,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:17,616 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:17,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:17,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1374631697, now seen corresponding path program 10 times [2023-11-17 15:58:17,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:17,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863837213] [2023-11-17 15:58:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:17,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:17,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:17,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863837213] [2023-11-17 15:58:17,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863837213] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:17,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482433169] [2023-11-17 15:58:17,685 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:58:17,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:17,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:17,686 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:17,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-17 15:58:17,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:58:17,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:17,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:17,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:17,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:17,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482433169] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:17,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:17,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-17 15:58:17,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842712253] [2023-11-17 15:58:17,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:17,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:17,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:17,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:17,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:58:17,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:17,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 123 transitions, 1506 flow. Second operand has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:17,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:17,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:17,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:18,107 INFO L124 PetriNetUnfolderBase]: 269/468 cut-off events. [2023-11-17 15:58:18,108 INFO L125 PetriNetUnfolderBase]: For 4823/4823 co-relation queries the response was YES. [2023-11-17 15:58:18,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3148 conditions, 468 events. 269/468 cut-off events. For 4823/4823 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1880 event pairs, 41 based on Foata normal form. 4/472 useless extension candidates. Maximal degree in co-relation 3061. Up to 219 conditions per place. [2023-11-17 15:58:18,115 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 80 selfloop transitions, 64 changer transitions 2/146 dead transitions. [2023-11-17 15:58:18,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 146 transitions, 1997 flow [2023-11-17 15:58:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:58:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:58:18,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2610 transitions. [2023-11-17 15:58:18,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42001931123270037 [2023-11-17 15:58:18,121 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2610 transitions. [2023-11-17 15:58:18,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2610 transitions. [2023-11-17 15:58:18,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:18,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2610 transitions. [2023-11-17 15:58:18,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 200.76923076923077) internal successors, (2610), 13 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:18,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 478.0) internal successors, (6692), 14 states have internal predecessors, (6692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:18,131 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 478.0) internal successors, (6692), 14 states have internal predecessors, (6692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:18,131 INFO L175 Difference]: Start difference. First operand has 120 places, 123 transitions, 1506 flow. Second operand 13 states and 2610 transitions. [2023-11-17 15:58:18,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 146 transitions, 1997 flow [2023-11-17 15:58:18,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 146 transitions, 1794 flow, removed 80 selfloop flow, removed 5 redundant places. [2023-11-17 15:58:18,152 INFO L231 Difference]: Finished difference. Result has 129 places, 123 transitions, 1443 flow [2023-11-17 15:58:18,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1443, PETRI_PLACES=129, PETRI_TRANSITIONS=123} [2023-11-17 15:58:18,153 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 109 predicate places. [2023-11-17 15:58:18,153 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 123 transitions, 1443 flow [2023-11-17 15:58:18,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:18,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:18,154 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:18,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:18,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:18,360 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:18,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:18,360 INFO L85 PathProgramCache]: Analyzing trace with hash -256781111, now seen corresponding path program 11 times [2023-11-17 15:58:18,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:18,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694827266] [2023-11-17 15:58:18,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:18,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:18,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:18,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694827266] [2023-11-17 15:58:18,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694827266] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:18,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47100941] [2023-11-17 15:58:18,428 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:58:18,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:18,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:18,429 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:18,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-17 15:58:18,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:18,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:18,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:18,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:18,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:18,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47100941] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:18,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:18,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-17 15:58:18,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419012882] [2023-11-17 15:58:18,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:18,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:58:18,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:18,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:58:18,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:58:18,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:18,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 123 transitions, 1443 flow. Second operand has 13 states, 13 states have (on average 198.15384615384616) internal successors, (2576), 13 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:18,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:18,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:18,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:18,830 INFO L124 PetriNetUnfolderBase]: 297/518 cut-off events. [2023-11-17 15:58:18,830 INFO L125 PetriNetUnfolderBase]: For 6579/6579 co-relation queries the response was YES. [2023-11-17 15:58:18,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3477 conditions, 518 events. 297/518 cut-off events. For 6579/6579 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2143 event pairs, 53 based on Foata normal form. 8/526 useless extension candidates. Maximal degree in co-relation 3415. Up to 319 conditions per place. [2023-11-17 15:58:18,837 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 101 selfloop transitions, 54 changer transitions 7/162 dead transitions. [2023-11-17 15:58:18,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 162 transitions, 2155 flow [2023-11-17 15:58:18,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:58:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:58:18,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2216 transitions. [2023-11-17 15:58:18,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214530239634842 [2023-11-17 15:58:18,840 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2216 transitions. [2023-11-17 15:58:18,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2216 transitions. [2023-11-17 15:58:18,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:18,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2216 transitions. [2023-11-17 15:58:18,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 201.45454545454547) internal successors, (2216), 11 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:18,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 478.0) internal successors, (5736), 12 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:18,847 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 478.0) internal successors, (5736), 12 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:18,847 INFO L175 Difference]: Start difference. First operand has 129 places, 123 transitions, 1443 flow. Second operand 11 states and 2216 transitions. [2023-11-17 15:58:18,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 162 transitions, 2155 flow [2023-11-17 15:58:18,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 162 transitions, 2046 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-11-17 15:58:18,871 INFO L231 Difference]: Finished difference. Result has 132 places, 134 transitions, 1718 flow [2023-11-17 15:58:18,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1337, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1718, PETRI_PLACES=132, PETRI_TRANSITIONS=134} [2023-11-17 15:58:18,871 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 112 predicate places. [2023-11-17 15:58:18,872 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 134 transitions, 1718 flow [2023-11-17 15:58:18,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 198.15384615384616) internal successors, (2576), 13 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:18,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:18,872 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:18,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:19,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-17 15:58:19,077 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:19,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:19,078 INFO L85 PathProgramCache]: Analyzing trace with hash -405403085, now seen corresponding path program 12 times [2023-11-17 15:58:19,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:19,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891133099] [2023-11-17 15:58:19,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:19,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:19,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:19,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891133099] [2023-11-17 15:58:19,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891133099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:19,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722583187] [2023-11-17 15:58:19,137 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:58:19,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:19,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:19,139 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:19,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-17 15:58:19,226 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 15:58:19,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:19,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:19,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:19,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:19,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722583187] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:19,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:19,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-17 15:58:19,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685120446] [2023-11-17 15:58:19,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:19,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:19,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:19,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:19,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:58:19,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:19,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 134 transitions, 1718 flow. Second operand has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:19,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:19,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:19,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:19,542 INFO L124 PetriNetUnfolderBase]: 307/526 cut-off events. [2023-11-17 15:58:19,542 INFO L125 PetriNetUnfolderBase]: For 7831/7831 co-relation queries the response was YES. [2023-11-17 15:58:19,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3714 conditions, 526 events. 307/526 cut-off events. For 7831/7831 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2131 event pairs, 53 based on Foata normal form. 16/542 useless extension candidates. Maximal degree in co-relation 3613. Up to 331 conditions per place. [2023-11-17 15:58:19,551 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 105 selfloop transitions, 63 changer transitions 2/170 dead transitions. [2023-11-17 15:58:19,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 170 transitions, 2370 flow [2023-11-17 15:58:19,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:58:19,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:58:19,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2417 transitions. [2023-11-17 15:58:19,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421373779637378 [2023-11-17 15:58:19,555 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2417 transitions. [2023-11-17 15:58:19,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2417 transitions. [2023-11-17 15:58:19,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:19,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2417 transitions. [2023-11-17 15:58:19,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 201.41666666666666) internal successors, (2417), 12 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:19,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:19,563 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:19,563 INFO L175 Difference]: Start difference. First operand has 132 places, 134 transitions, 1718 flow. Second operand 12 states and 2417 transitions. [2023-11-17 15:58:19,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 170 transitions, 2370 flow [2023-11-17 15:58:19,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 170 transitions, 2171 flow, removed 60 selfloop flow, removed 6 redundant places. [2023-11-17 15:58:19,591 INFO L231 Difference]: Finished difference. Result has 138 places, 143 transitions, 1853 flow [2023-11-17 15:58:19,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1853, PETRI_PLACES=138, PETRI_TRANSITIONS=143} [2023-11-17 15:58:19,592 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 118 predicate places. [2023-11-17 15:58:19,592 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 143 transitions, 1853 flow [2023-11-17 15:58:19,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:19,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:19,593 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:19,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:19,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-17 15:58:19,798 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:19,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:19,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1065567885, now seen corresponding path program 13 times [2023-11-17 15:58:19,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:19,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036048418] [2023-11-17 15:58:19,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:19,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:19,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:19,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:19,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036048418] [2023-11-17 15:58:19,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036048418] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:19,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991937155] [2023-11-17 15:58:19,858 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:58:19,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:19,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:19,859 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:19,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-17 15:58:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:19,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:19,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:19,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:20,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991937155] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:20,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:20,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-17 15:58:20,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568573700] [2023-11-17 15:58:20,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:20,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:20,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:20,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:20,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:58:20,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:20,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 143 transitions, 1853 flow. Second operand has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:20,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:20,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:20,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:20,277 INFO L124 PetriNetUnfolderBase]: 307/520 cut-off events. [2023-11-17 15:58:20,277 INFO L125 PetriNetUnfolderBase]: For 7513/7513 co-relation queries the response was YES. [2023-11-17 15:58:20,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3727 conditions, 520 events. 307/520 cut-off events. For 7513/7513 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2045 event pairs, 56 based on Foata normal form. 8/528 useless extension candidates. Maximal degree in co-relation 3625. Up to 338 conditions per place. [2023-11-17 15:58:20,285 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 103 selfloop transitions, 69 changer transitions 0/172 dead transitions. [2023-11-17 15:58:20,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 172 transitions, 2395 flow [2023-11-17 15:58:20,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 15:58:20,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 15:58:20,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3410 transitions. [2023-11-17 15:58:20,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196406596111248 [2023-11-17 15:58:20,290 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3410 transitions. [2023-11-17 15:58:20,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3410 transitions. [2023-11-17 15:58:20,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:20,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3410 transitions. [2023-11-17 15:58:20,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 200.58823529411765) internal successors, (3410), 17 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:20,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:20,300 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:20,300 INFO L175 Difference]: Start difference. First operand has 138 places, 143 transitions, 1853 flow. Second operand 17 states and 3410 transitions. [2023-11-17 15:58:20,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 172 transitions, 2395 flow [2023-11-17 15:58:20,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 172 transitions, 2075 flow, removed 102 selfloop flow, removed 8 redundant places. [2023-11-17 15:58:20,326 INFO L231 Difference]: Finished difference. Result has 148 places, 149 transitions, 1802 flow [2023-11-17 15:58:20,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1802, PETRI_PLACES=148, PETRI_TRANSITIONS=149} [2023-11-17 15:58:20,326 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 128 predicate places. [2023-11-17 15:58:20,326 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 149 transitions, 1802 flow [2023-11-17 15:58:20,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:20,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:20,327 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:20,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:20,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-17 15:58:20,532 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:20,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:20,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1790467067, now seen corresponding path program 14 times [2023-11-17 15:58:20,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:20,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932350843] [2023-11-17 15:58:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:20,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:20,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:20,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:20,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932350843] [2023-11-17 15:58:20,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932350843] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:20,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958614014] [2023-11-17 15:58:20,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:58:20,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:20,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:20,590 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:20,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-17 15:58:20,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:20,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:20,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:20,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:20,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:20,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958614014] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:20,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:20,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-17 15:58:20,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722965410] [2023-11-17 15:58:20,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:20,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:58:20,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:20,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:58:20,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:58:20,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:20,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 149 transitions, 1802 flow. Second operand has 13 states, 13 states have (on average 198.3846153846154) internal successors, (2579), 13 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:20,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:20,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:20,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:21,043 INFO L124 PetriNetUnfolderBase]: 366/625 cut-off events. [2023-11-17 15:58:21,043 INFO L125 PetriNetUnfolderBase]: For 7481/7481 co-relation queries the response was YES. [2023-11-17 15:58:21,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4126 conditions, 625 events. 366/625 cut-off events. For 7481/7481 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2559 event pairs, 34 based on Foata normal form. 10/635 useless extension candidates. Maximal degree in co-relation 4025. Up to 225 conditions per place. [2023-11-17 15:58:21,050 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 123 selfloop transitions, 79 changer transitions 0/202 dead transitions. [2023-11-17 15:58:21,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 202 transitions, 2649 flow [2023-11-17 15:58:21,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:58:21,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:58:21,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2815 transitions. [2023-11-17 15:58:21,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42065152420800955 [2023-11-17 15:58:21,054 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2815 transitions. [2023-11-17 15:58:21,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2815 transitions. [2023-11-17 15:58:21,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:21,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2815 transitions. [2023-11-17 15:58:21,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 201.07142857142858) internal successors, (2815), 14 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:21,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 478.0) internal successors, (7170), 15 states have internal predecessors, (7170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:21,063 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 478.0) internal successors, (7170), 15 states have internal predecessors, (7170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:21,063 INFO L175 Difference]: Start difference. First operand has 148 places, 149 transitions, 1802 flow. Second operand 14 states and 2815 transitions. [2023-11-17 15:58:21,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 202 transitions, 2649 flow [2023-11-17 15:58:21,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 202 transitions, 2442 flow, removed 38 selfloop flow, removed 12 redundant places. [2023-11-17 15:58:21,092 INFO L231 Difference]: Finished difference. Result has 154 places, 173 transitions, 2099 flow [2023-11-17 15:58:21,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1599, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2099, PETRI_PLACES=154, PETRI_TRANSITIONS=173} [2023-11-17 15:58:21,097 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 134 predicate places. [2023-11-17 15:58:21,098 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 173 transitions, 2099 flow [2023-11-17 15:58:21,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 198.3846153846154) internal successors, (2579), 13 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:21,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:21,098 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:21,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:21,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:21,304 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:21,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:21,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1587265189, now seen corresponding path program 15 times [2023-11-17 15:58:21,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:21,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563940389] [2023-11-17 15:58:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:21,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:21,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:21,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563940389] [2023-11-17 15:58:21,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563940389] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:21,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804902422] [2023-11-17 15:58:21,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:58:21,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:21,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:21,375 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:21,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-17 15:58:21,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 15:58:21,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:21,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:21,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:21,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:21,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:21,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804902422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:21,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:21,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-11-17 15:58:21,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757765430] [2023-11-17 15:58:21,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:21,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:58:21,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:21,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:58:21,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:58:21,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:21,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 173 transitions, 2099 flow. Second operand has 13 states, 13 states have (on average 197.92307692307693) internal successors, (2573), 13 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:21,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:21,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:21,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:21,860 INFO L124 PetriNetUnfolderBase]: 487/820 cut-off events. [2023-11-17 15:58:21,860 INFO L125 PetriNetUnfolderBase]: For 12130/12130 co-relation queries the response was YES. [2023-11-17 15:58:21,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5663 conditions, 820 events. 487/820 cut-off events. For 12130/12130 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3554 event pairs, 37 based on Foata normal form. 14/834 useless extension candidates. Maximal degree in co-relation 5555. Up to 301 conditions per place. [2023-11-17 15:58:21,878 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 103 selfloop transitions, 154 changer transitions 0/257 dead transitions. [2023-11-17 15:58:21,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 257 transitions, 3637 flow [2023-11-17 15:58:21,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 15:58:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 15:58:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3418 transitions. [2023-11-17 15:58:21,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42062515382722127 [2023-11-17 15:58:21,884 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3418 transitions. [2023-11-17 15:58:21,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3418 transitions. [2023-11-17 15:58:21,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:21,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3418 transitions. [2023-11-17 15:58:21,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 201.05882352941177) internal successors, (3418), 17 states have internal predecessors, (3418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:21,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:21,895 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:21,895 INFO L175 Difference]: Start difference. First operand has 154 places, 173 transitions, 2099 flow. Second operand 17 states and 3418 transitions. [2023-11-17 15:58:21,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 257 transitions, 3637 flow [2023-11-17 15:58:21,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 257 transitions, 3493 flow, removed 49 selfloop flow, removed 4 redundant places. [2023-11-17 15:58:21,936 INFO L231 Difference]: Finished difference. Result has 174 places, 229 transitions, 3352 flow [2023-11-17 15:58:21,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3352, PETRI_PLACES=174, PETRI_TRANSITIONS=229} [2023-11-17 15:58:21,938 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 154 predicate places. [2023-11-17 15:58:21,938 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 229 transitions, 3352 flow [2023-11-17 15:58:21,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 197.92307692307693) internal successors, (2573), 13 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:21,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:21,939 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:21,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:22,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-17 15:58:22,144 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:22,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:22,144 INFO L85 PathProgramCache]: Analyzing trace with hash -908635813, now seen corresponding path program 16 times [2023-11-17 15:58:22,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:22,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181991909] [2023-11-17 15:58:22,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:22,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:22,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:22,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181991909] [2023-11-17 15:58:22,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181991909] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:22,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611419422] [2023-11-17 15:58:22,209 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:58:22,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:22,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:22,210 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:22,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-17 15:58:22,306 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:58:22,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:22,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:22,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:22,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:22,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611419422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:22,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:22,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 15:58:22,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972100603] [2023-11-17 15:58:22,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:22,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:58:22,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:22,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:58:22,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:58:22,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:22,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 229 transitions, 3352 flow. Second operand has 15 states, 15 states have (on average 197.73333333333332) internal successors, (2966), 15 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:22,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:22,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:22,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:22,718 INFO L124 PetriNetUnfolderBase]: 528/883 cut-off events. [2023-11-17 15:58:22,718 INFO L125 PetriNetUnfolderBase]: For 15081/15081 co-relation queries the response was YES. [2023-11-17 15:58:22,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7026 conditions, 883 events. 528/883 cut-off events. For 15081/15081 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3908 event pairs, 60 based on Foata normal form. 6/889 useless extension candidates. Maximal degree in co-relation 6905. Up to 400 conditions per place. [2023-11-17 15:58:22,730 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 132 selfloop transitions, 138 changer transitions 6/276 dead transitions. [2023-11-17 15:58:22,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 276 transitions, 4611 flow [2023-11-17 15:58:22,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 15:58:22,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 15:58:22,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3206 transitions. [2023-11-17 15:58:22,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919456066945604 [2023-11-17 15:58:22,734 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3206 transitions. [2023-11-17 15:58:22,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3206 transitions. [2023-11-17 15:58:22,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:22,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3206 transitions. [2023-11-17 15:58:22,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 200.375) internal successors, (3206), 16 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:22,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 478.0) internal successors, (8126), 17 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:22,744 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 478.0) internal successors, (8126), 17 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:22,744 INFO L175 Difference]: Start difference. First operand has 174 places, 229 transitions, 3352 flow. Second operand 16 states and 3206 transitions. [2023-11-17 15:58:22,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 276 transitions, 4611 flow [2023-11-17 15:58:22,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 276 transitions, 4129 flow, removed 223 selfloop flow, removed 4 redundant places. [2023-11-17 15:58:22,816 INFO L231 Difference]: Finished difference. Result has 191 places, 248 transitions, 3714 flow [2023-11-17 15:58:22,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=3050, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3714, PETRI_PLACES=191, PETRI_TRANSITIONS=248} [2023-11-17 15:58:22,817 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 171 predicate places. [2023-11-17 15:58:22,817 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 248 transitions, 3714 flow [2023-11-17 15:58:22,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 197.73333333333332) internal successors, (2966), 15 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:22,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:22,817 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:22,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-17 15:58:23,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:23,022 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:23,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:23,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1438504925, now seen corresponding path program 17 times [2023-11-17 15:58:23,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:23,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739180881] [2023-11-17 15:58:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:23,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:23,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:23,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739180881] [2023-11-17 15:58:23,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739180881] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:23,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589246623] [2023-11-17 15:58:23,086 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:58:23,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:23,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:23,088 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:23,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-17 15:58:23,172 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:23,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:23,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:23,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:23,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:23,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:23,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589246623] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:23,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:23,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 15:58:23,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051981929] [2023-11-17 15:58:23,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:23,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:58:23,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:23,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:58:23,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:58:23,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:23,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 248 transitions, 3714 flow. Second operand has 15 states, 15 states have (on average 198.13333333333333) internal successors, (2972), 15 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:23,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:23,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:23,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:23,774 INFO L124 PetriNetUnfolderBase]: 636/1067 cut-off events. [2023-11-17 15:58:23,775 INFO L125 PetriNetUnfolderBase]: For 19963/19963 co-relation queries the response was YES. [2023-11-17 15:58:23,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8401 conditions, 1067 events. 636/1067 cut-off events. For 19963/19963 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4924 event pairs, 42 based on Foata normal form. 10/1077 useless extension candidates. Maximal degree in co-relation 8313. Up to 348 conditions per place. [2023-11-17 15:58:23,788 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 171 selfloop transitions, 169 changer transitions 0/340 dead transitions. [2023-11-17 15:58:23,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 340 transitions, 5523 flow [2023-11-17 15:58:23,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 15:58:23,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 15:58:23,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4614 transitions. [2023-11-17 15:58:23,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196834637074768 [2023-11-17 15:58:23,794 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4614 transitions. [2023-11-17 15:58:23,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4614 transitions. [2023-11-17 15:58:23,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:23,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4614 transitions. [2023-11-17 15:58:23,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 200.6086956521739) internal successors, (4614), 23 states have internal predecessors, (4614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:23,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 478.0) internal successors, (11472), 24 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:23,808 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 478.0) internal successors, (11472), 24 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:23,808 INFO L175 Difference]: Start difference. First operand has 191 places, 248 transitions, 3714 flow. Second operand 23 states and 4614 transitions. [2023-11-17 15:58:23,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 340 transitions, 5523 flow [2023-11-17 15:58:23,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 340 transitions, 5305 flow, removed 39 selfloop flow, removed 8 redundant places. [2023-11-17 15:58:23,873 INFO L231 Difference]: Finished difference. Result has 209 places, 298 transitions, 4886 flow [2023-11-17 15:58:23,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=3531, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4886, PETRI_PLACES=209, PETRI_TRANSITIONS=298} [2023-11-17 15:58:23,874 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 189 predicate places. [2023-11-17 15:58:23,874 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 298 transitions, 4886 flow [2023-11-17 15:58:23,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 198.13333333333333) internal successors, (2972), 15 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:23,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:23,875 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:23,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-17 15:58:24,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:24,080 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:24,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:24,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2027828177, now seen corresponding path program 18 times [2023-11-17 15:58:24,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:24,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839110767] [2023-11-17 15:58:24,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:24,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:24,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:24,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839110767] [2023-11-17 15:58:24,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839110767] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361487348] [2023-11-17 15:58:24,139 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:58:24,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:24,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:24,140 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:24,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-17 15:58:24,258 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 15:58:24,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:24,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:24,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:24,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:24,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361487348] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:24,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:24,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 15:58:24,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711043600] [2023-11-17 15:58:24,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:24,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:58:24,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:24,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:58:24,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:58:24,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:24,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 298 transitions, 4886 flow. Second operand has 15 states, 15 states have (on average 197.86666666666667) internal successors, (2968), 15 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:24,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:24,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:24,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:24,796 INFO L124 PetriNetUnfolderBase]: 685/1146 cut-off events. [2023-11-17 15:58:24,797 INFO L125 PetriNetUnfolderBase]: For 30958/30958 co-relation queries the response was YES. [2023-11-17 15:58:24,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9761 conditions, 1146 events. 685/1146 cut-off events. For 30958/30958 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5386 event pairs, 148 based on Foata normal form. 28/1174 useless extension candidates. Maximal degree in co-relation 9619. Up to 984 conditions per place. [2023-11-17 15:58:24,809 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 299 selfloop transitions, 59 changer transitions 0/358 dead transitions. [2023-11-17 15:58:24,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 358 transitions, 6494 flow [2023-11-17 15:58:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 15:58:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 15:58:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3820 transitions. [2023-11-17 15:58:24,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42061219995595683 [2023-11-17 15:58:24,818 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3820 transitions. [2023-11-17 15:58:24,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3820 transitions. [2023-11-17 15:58:24,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:24,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3820 transitions. [2023-11-17 15:58:24,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 201.05263157894737) internal successors, (3820), 19 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:24,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 478.0) internal successors, (9560), 20 states have internal predecessors, (9560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:24,831 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 478.0) internal successors, (9560), 20 states have internal predecessors, (9560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:24,831 INFO L175 Difference]: Start difference. First operand has 209 places, 298 transitions, 4886 flow. Second operand 19 states and 3820 transitions. [2023-11-17 15:58:24,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 358 transitions, 6494 flow [2023-11-17 15:58:24,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 358 transitions, 6291 flow, removed 59 selfloop flow, removed 10 redundant places. [2023-11-17 15:58:24,950 INFO L231 Difference]: Finished difference. Result has 229 places, 323 transitions, 5581 flow [2023-11-17 15:58:24,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=4683, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5581, PETRI_PLACES=229, PETRI_TRANSITIONS=323} [2023-11-17 15:58:24,951 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 209 predicate places. [2023-11-17 15:58:24,951 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 323 transitions, 5581 flow [2023-11-17 15:58:24,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 197.86666666666667) internal successors, (2968), 15 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:24,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:24,952 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:24,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:25,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:25,158 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:25,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:25,158 INFO L85 PathProgramCache]: Analyzing trace with hash -30532341, now seen corresponding path program 19 times [2023-11-17 15:58:25,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:25,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776774119] [2023-11-17 15:58:25,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:25,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:25,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:25,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776774119] [2023-11-17 15:58:25,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776774119] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:25,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729839539] [2023-11-17 15:58:25,221 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:58:25,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:25,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:25,223 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:25,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-17 15:58:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:25,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:25,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:25,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:25,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729839539] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:25,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:25,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-11-17 15:58:25,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801087849] [2023-11-17 15:58:25,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:25,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:58:25,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:25,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:58:25,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:58:25,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:25,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 323 transitions, 5581 flow. Second operand has 13 states, 13 states have (on average 198.0) internal successors, (2574), 13 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:25,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:25,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:25,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:25,693 INFO L124 PetriNetUnfolderBase]: 694/1161 cut-off events. [2023-11-17 15:58:25,693 INFO L125 PetriNetUnfolderBase]: For 31346/31346 co-relation queries the response was YES. [2023-11-17 15:58:25,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10396 conditions, 1161 events. 694/1161 cut-off events. For 31346/31346 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5484 event pairs, 149 based on Foata normal form. 4/1165 useless extension candidates. Maximal degree in co-relation 10227. Up to 1019 conditions per place. [2023-11-17 15:58:25,707 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 285 selfloop transitions, 56 changer transitions 2/343 dead transitions. [2023-11-17 15:58:25,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 343 transitions, 6640 flow [2023-11-17 15:58:25,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:58:25,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:58:25,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2208 transitions. [2023-11-17 15:58:25,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4199315329022442 [2023-11-17 15:58:25,716 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2208 transitions. [2023-11-17 15:58:25,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2208 transitions. [2023-11-17 15:58:25,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:25,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2208 transitions. [2023-11-17 15:58:25,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:25,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 478.0) internal successors, (5736), 12 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:25,727 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 478.0) internal successors, (5736), 12 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:25,728 INFO L175 Difference]: Start difference. First operand has 229 places, 323 transitions, 5581 flow. Second operand 11 states and 2208 transitions. [2023-11-17 15:58:25,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 343 transitions, 6640 flow [2023-11-17 15:58:25,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 343 transitions, 5981 flow, removed 309 selfloop flow, removed 8 redundant places. [2023-11-17 15:58:25,918 INFO L231 Difference]: Finished difference. Result has 232 places, 326 transitions, 5200 flow [2023-11-17 15:58:25,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=5000, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5200, PETRI_PLACES=232, PETRI_TRANSITIONS=326} [2023-11-17 15:58:25,919 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 212 predicate places. [2023-11-17 15:58:25,919 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 326 transitions, 5200 flow [2023-11-17 15:58:25,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 198.0) internal successors, (2574), 13 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:25,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:25,920 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:25,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:26,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:26,120 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:26,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:26,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1192634673, now seen corresponding path program 20 times [2023-11-17 15:58:26,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:26,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285866401] [2023-11-17 15:58:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:26,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:26,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:26,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285866401] [2023-11-17 15:58:26,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285866401] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:26,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265129111] [2023-11-17 15:58:26,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:58:26,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:26,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:26,177 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:26,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-17 15:58:26,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:26,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:26,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:26,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:26,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:26,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:26,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265129111] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:26,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:26,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-17 15:58:26,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677000897] [2023-11-17 15:58:26,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:26,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:58:26,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:26,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:58:26,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:58:26,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:26,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 326 transitions, 5200 flow. Second operand has 11 states, 11 states have (on average 198.0909090909091) internal successors, (2179), 11 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:26,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:26,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:26,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:26,639 INFO L124 PetriNetUnfolderBase]: 715/1206 cut-off events. [2023-11-17 15:58:26,639 INFO L125 PetriNetUnfolderBase]: For 36417/36417 co-relation queries the response was YES. [2023-11-17 15:58:26,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10385 conditions, 1206 events. 715/1206 cut-off events. For 36417/36417 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5840 event pairs, 89 based on Foata normal form. 2/1208 useless extension candidates. Maximal degree in co-relation 10231. Up to 735 conditions per place. [2023-11-17 15:58:26,658 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 247 selfloop transitions, 102 changer transitions 5/354 dead transitions. [2023-11-17 15:58:26,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 354 transitions, 6337 flow [2023-11-17 15:58:26,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:58:26,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:58:26,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1414 transitions. [2023-11-17 15:58:26,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225941422594142 [2023-11-17 15:58:26,660 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1414 transitions. [2023-11-17 15:58:26,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1414 transitions. [2023-11-17 15:58:26,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:26,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1414 transitions. [2023-11-17 15:58:26,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:26,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:26,666 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:26,666 INFO L175 Difference]: Start difference. First operand has 232 places, 326 transitions, 5200 flow. Second operand 7 states and 1414 transitions. [2023-11-17 15:58:26,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 354 transitions, 6337 flow [2023-11-17 15:58:26,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 354 transitions, 6123 flow, removed 16 selfloop flow, removed 6 redundant places. [2023-11-17 15:58:26,821 INFO L231 Difference]: Finished difference. Result has 234 places, 330 transitions, 5433 flow [2023-11-17 15:58:26,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=4991, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5433, PETRI_PLACES=234, PETRI_TRANSITIONS=330} [2023-11-17 15:58:26,822 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 214 predicate places. [2023-11-17 15:58:26,822 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 330 transitions, 5433 flow [2023-11-17 15:58:26,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 198.0909090909091) internal successors, (2179), 11 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:26,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:26,823 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:26,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-17 15:58:27,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-17 15:58:27,023 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:27,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:27,024 INFO L85 PathProgramCache]: Analyzing trace with hash 711893413, now seen corresponding path program 21 times [2023-11-17 15:58:27,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:27,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010314537] [2023-11-17 15:58:27,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:27,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:27,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:27,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010314537] [2023-11-17 15:58:27,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010314537] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:27,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22243440] [2023-11-17 15:58:27,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:58:27,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:27,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:27,083 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:27,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-17 15:58:27,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 15:58:27,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:27,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:27,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:27,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:27,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22243440] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:27,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:27,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-11-17 15:58:27,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120779059] [2023-11-17 15:58:27,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:27,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:58:27,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:27,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:58:27,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:58:27,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:27,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 330 transitions, 5433 flow. Second operand has 13 states, 13 states have (on average 198.0) internal successors, (2574), 13 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:27,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:27,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:27,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:27,648 INFO L124 PetriNetUnfolderBase]: 777/1288 cut-off events. [2023-11-17 15:58:27,648 INFO L125 PetriNetUnfolderBase]: For 44127/44127 co-relation queries the response was YES. [2023-11-17 15:58:27,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11859 conditions, 1288 events. 777/1288 cut-off events. For 44127/44127 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6148 event pairs, 37 based on Foata normal form. 8/1296 useless extension candidates. Maximal degree in co-relation 11733. Up to 884 conditions per place. [2023-11-17 15:58:27,663 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 275 selfloop transitions, 118 changer transitions 0/393 dead transitions. [2023-11-17 15:58:27,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 393 transitions, 7434 flow [2023-11-17 15:58:27,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 15:58:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 15:58:27,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3415 transitions. [2023-11-17 15:58:27,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4202559684961851 [2023-11-17 15:58:27,672 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3415 transitions. [2023-11-17 15:58:27,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3415 transitions. [2023-11-17 15:58:27,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:27,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3415 transitions. [2023-11-17 15:58:27,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 200.88235294117646) internal successors, (3415), 17 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:27,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:27,682 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:27,683 INFO L175 Difference]: Start difference. First operand has 234 places, 330 transitions, 5433 flow. Second operand 17 states and 3415 transitions. [2023-11-17 15:58:27,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 393 transitions, 7434 flow [2023-11-17 15:58:27,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 393 transitions, 7227 flow, removed 46 selfloop flow, removed 6 redundant places. [2023-11-17 15:58:27,866 INFO L231 Difference]: Finished difference. Result has 247 places, 372 transitions, 6685 flow [2023-11-17 15:58:27,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=5280, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6685, PETRI_PLACES=247, PETRI_TRANSITIONS=372} [2023-11-17 15:58:27,867 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 227 predicate places. [2023-11-17 15:58:27,867 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 372 transitions, 6685 flow [2023-11-17 15:58:27,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 198.0) internal successors, (2574), 13 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:27,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:27,868 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:27,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:28,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-17 15:58:28,073 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:28,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:28,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1072920697, now seen corresponding path program 22 times [2023-11-17 15:58:28,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:28,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623654907] [2023-11-17 15:58:28,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:28,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:28,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:28,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623654907] [2023-11-17 15:58:28,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623654907] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:28,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248667001] [2023-11-17 15:58:28,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:58:28,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:28,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:28,147 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:28,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-17 15:58:28,221 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:58:28,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:28,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:28,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:28,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:28,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:28,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248667001] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:28,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:28,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 15:58:28,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129490202] [2023-11-17 15:58:28,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:28,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:58:28,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:28,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:58:28,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:58:28,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:28,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 372 transitions, 6685 flow. Second operand has 15 states, 15 states have (on average 197.73333333333332) internal successors, (2966), 15 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:28,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:28,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:28,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:28,722 INFO L124 PetriNetUnfolderBase]: 821/1356 cut-off events. [2023-11-17 15:58:28,722 INFO L125 PetriNetUnfolderBase]: For 49437/49437 co-relation queries the response was YES. [2023-11-17 15:58:28,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13156 conditions, 1356 events. 821/1356 cut-off events. For 49437/49437 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6527 event pairs, 169 based on Foata normal form. 8/1364 useless extension candidates. Maximal degree in co-relation 12917. Up to 1137 conditions per place. [2023-11-17 15:58:28,736 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 320 selfloop transitions, 94 changer transitions 5/419 dead transitions. [2023-11-17 15:58:28,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 419 transitions, 8833 flow [2023-11-17 15:58:28,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:58:28,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:58:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3005 transitions. [2023-11-17 15:58:28,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4191073919107392 [2023-11-17 15:58:28,740 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3005 transitions. [2023-11-17 15:58:28,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3005 transitions. [2023-11-17 15:58:28,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:28,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3005 transitions. [2023-11-17 15:58:28,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 200.33333333333334) internal successors, (3005), 15 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:28,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 478.0) internal successors, (7648), 16 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:28,749 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 478.0) internal successors, (7648), 16 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:28,749 INFO L175 Difference]: Start difference. First operand has 247 places, 372 transitions, 6685 flow. Second operand 15 states and 3005 transitions. [2023-11-17 15:58:28,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 419 transitions, 8833 flow [2023-11-17 15:58:28,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 419 transitions, 7496 flow, removed 615 selfloop flow, removed 8 redundant places. [2023-11-17 15:58:28,938 INFO L231 Difference]: Finished difference. Result has 260 places, 395 transitions, 6787 flow [2023-11-17 15:58:28,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=5824, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6787, PETRI_PLACES=260, PETRI_TRANSITIONS=395} [2023-11-17 15:58:28,939 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 240 predicate places. [2023-11-17 15:58:28,939 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 395 transitions, 6787 flow [2023-11-17 15:58:28,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 197.73333333333332) internal successors, (2966), 15 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:28,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:28,940 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:28,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-17 15:58:29,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-17 15:58:29,145 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:29,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:29,145 INFO L85 PathProgramCache]: Analyzing trace with hash -488130517, now seen corresponding path program 23 times [2023-11-17 15:58:29,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:29,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479867209] [2023-11-17 15:58:29,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:29,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:29,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:29,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479867209] [2023-11-17 15:58:29,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479867209] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:29,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239399451] [2023-11-17 15:58:29,203 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:58:29,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:29,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:29,204 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:29,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-17 15:58:29,293 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:29,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:29,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:29,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:29,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:29,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:29,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239399451] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:29,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:29,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-17 15:58:29,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602119015] [2023-11-17 15:58:29,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:29,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:58:29,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:29,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:58:29,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:58:29,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:29,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 395 transitions, 6787 flow. Second operand has 13 states, 13 states have (on average 197.92307692307693) internal successors, (2573), 13 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:29,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:29,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:29,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:29,800 INFO L124 PetriNetUnfolderBase]: 817/1348 cut-off events. [2023-11-17 15:58:29,801 INFO L125 PetriNetUnfolderBase]: For 37124/37124 co-relation queries the response was YES. [2023-11-17 15:58:29,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11913 conditions, 1348 events. 817/1348 cut-off events. For 37124/37124 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6487 event pairs, 109 based on Foata normal form. 4/1352 useless extension candidates. Maximal degree in co-relation 11813. Up to 883 conditions per place. [2023-11-17 15:58:29,814 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 287 selfloop transitions, 129 changer transitions 3/419 dead transitions. [2023-11-17 15:58:29,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 419 transitions, 7992 flow [2023-11-17 15:58:29,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:58:29,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:58:29,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2210 transitions. [2023-11-17 15:58:29,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4203119056675542 [2023-11-17 15:58:29,817 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2210 transitions. [2023-11-17 15:58:29,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2210 transitions. [2023-11-17 15:58:29,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:29,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2210 transitions. [2023-11-17 15:58:29,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 200.9090909090909) internal successors, (2210), 11 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:29,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 478.0) internal successors, (5736), 12 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:29,821 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 478.0) internal successors, (5736), 12 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:29,821 INFO L175 Difference]: Start difference. First operand has 260 places, 395 transitions, 6787 flow. Second operand 11 states and 2210 transitions. [2023-11-17 15:58:29,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 419 transitions, 7992 flow [2023-11-17 15:58:29,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 419 transitions, 7578 flow, removed 166 selfloop flow, removed 5 redundant places. [2023-11-17 15:58:29,965 INFO L231 Difference]: Finished difference. Result has 266 places, 398 transitions, 6931 flow [2023-11-17 15:58:29,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=6363, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6931, PETRI_PLACES=266, PETRI_TRANSITIONS=398} [2023-11-17 15:58:29,966 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 246 predicate places. [2023-11-17 15:58:29,966 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 398 transitions, 6931 flow [2023-11-17 15:58:29,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 197.92307692307693) internal successors, (2573), 13 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:29,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:29,966 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:29,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:30,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:30,167 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:30,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:30,167 INFO L85 PathProgramCache]: Analyzing trace with hash 254295237, now seen corresponding path program 24 times [2023-11-17 15:58:30,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:30,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601854790] [2023-11-17 15:58:30,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:30,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:30,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:30,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:30,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601854790] [2023-11-17 15:58:30,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601854790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:30,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108215558] [2023-11-17 15:58:30,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:58:30,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:30,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:30,237 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:30,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-17 15:58:30,334 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 15:58:30,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:30,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:30,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:30,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:30,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:30,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108215558] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:30,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:30,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-17 15:58:30,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606114676] [2023-11-17 15:58:30,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:30,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:58:30,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:30,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:58:30,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:58:30,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:30,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 398 transitions, 6931 flow. Second operand has 13 states, 13 states have (on average 197.92307692307693) internal successors, (2573), 13 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:30,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:30,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:30,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:30,833 INFO L124 PetriNetUnfolderBase]: 855/1406 cut-off events. [2023-11-17 15:58:30,833 INFO L125 PetriNetUnfolderBase]: For 34721/34721 co-relation queries the response was YES. [2023-11-17 15:58:30,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12343 conditions, 1406 events. 855/1406 cut-off events. For 34721/34721 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6802 event pairs, 41 based on Foata normal form. 10/1416 useless extension candidates. Maximal degree in co-relation 12239. Up to 1007 conditions per place. [2023-11-17 15:58:30,847 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 341 selfloop transitions, 101 changer transitions 0/442 dead transitions. [2023-11-17 15:58:30,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 442 transitions, 8121 flow [2023-11-17 15:58:30,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:58:30,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:58:30,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2808 transitions. [2023-11-17 15:58:30,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41960549910340705 [2023-11-17 15:58:30,850 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2808 transitions. [2023-11-17 15:58:30,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2808 transitions. [2023-11-17 15:58:30,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:30,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2808 transitions. [2023-11-17 15:58:30,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 200.57142857142858) internal successors, (2808), 14 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:30,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 478.0) internal successors, (7170), 15 states have internal predecessors, (7170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:30,858 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 478.0) internal successors, (7170), 15 states have internal predecessors, (7170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:30,858 INFO L175 Difference]: Start difference. First operand has 266 places, 398 transitions, 6931 flow. Second operand 14 states and 2808 transitions. [2023-11-17 15:58:30,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 442 transitions, 8121 flow [2023-11-17 15:58:31,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 442 transitions, 7852 flow, removed 67 selfloop flow, removed 5 redundant places. [2023-11-17 15:58:31,064 INFO L231 Difference]: Finished difference. Result has 276 places, 420 transitions, 7124 flow [2023-11-17 15:58:31,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=6664, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7124, PETRI_PLACES=276, PETRI_TRANSITIONS=420} [2023-11-17 15:58:31,064 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 256 predicate places. [2023-11-17 15:58:31,064 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 420 transitions, 7124 flow [2023-11-17 15:58:31,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 197.92307692307693) internal successors, (2573), 13 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:31,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:31,065 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:31,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:31,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-17 15:58:31,266 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:31,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:31,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1999741523, now seen corresponding path program 25 times [2023-11-17 15:58:31,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:31,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559725127] [2023-11-17 15:58:31,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:31,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:31,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:31,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:31,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559725127] [2023-11-17 15:58:31,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559725127] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:31,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290281784] [2023-11-17 15:58:31,323 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:58:31,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:31,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:31,324 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:31,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-17 15:58:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:31,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:31,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:31,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:31,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290281784] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:31,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:31,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-11-17 15:58:31,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375645774] [2023-11-17 15:58:31,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:31,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:58:31,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:31,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:58:31,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:58:31,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:31,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 420 transitions, 7124 flow. Second operand has 13 states, 13 states have (on average 197.92307692307693) internal successors, (2573), 13 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:31,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:31,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:31,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:31,938 INFO L124 PetriNetUnfolderBase]: 856/1419 cut-off events. [2023-11-17 15:58:31,939 INFO L125 PetriNetUnfolderBase]: For 37535/37535 co-relation queries the response was YES. [2023-11-17 15:58:31,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12722 conditions, 1419 events. 856/1419 cut-off events. For 37535/37535 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6967 event pairs, 50 based on Foata normal form. 16/1435 useless extension candidates. Maximal degree in co-relation 12613. Up to 894 conditions per place. [2023-11-17 15:58:31,954 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 311 selfloop transitions, 130 changer transitions 2/443 dead transitions. [2023-11-17 15:58:31,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 443 transitions, 8242 flow [2023-11-17 15:58:31,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:58:31,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:58:31,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2817 transitions. [2023-11-17 15:58:31,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4209503885236103 [2023-11-17 15:58:31,958 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2817 transitions. [2023-11-17 15:58:31,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2817 transitions. [2023-11-17 15:58:31,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:31,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2817 transitions. [2023-11-17 15:58:31,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 201.21428571428572) internal successors, (2817), 14 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:31,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 478.0) internal successors, (7170), 15 states have internal predecessors, (7170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:31,965 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 478.0) internal successors, (7170), 15 states have internal predecessors, (7170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:31,965 INFO L175 Difference]: Start difference. First operand has 276 places, 420 transitions, 7124 flow. Second operand 14 states and 2817 transitions. [2023-11-17 15:58:31,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 443 transitions, 8242 flow [2023-11-17 15:58:32,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 443 transitions, 8125 flow, removed 37 selfloop flow, removed 4 redundant places. [2023-11-17 15:58:32,126 INFO L231 Difference]: Finished difference. Result has 287 places, 419 transitions, 7347 flow [2023-11-17 15:58:32,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=7000, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7347, PETRI_PLACES=287, PETRI_TRANSITIONS=419} [2023-11-17 15:58:32,127 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 267 predicate places. [2023-11-17 15:58:32,127 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 419 transitions, 7347 flow [2023-11-17 15:58:32,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 197.92307692307693) internal successors, (2573), 13 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:32,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:32,128 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:32,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-17 15:58:32,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-17 15:58:32,333 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:32,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:32,333 INFO L85 PathProgramCache]: Analyzing trace with hash -581982745, now seen corresponding path program 26 times [2023-11-17 15:58:32,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:32,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878976542] [2023-11-17 15:58:32,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:32,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:32,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:32,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878976542] [2023-11-17 15:58:32,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878976542] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:32,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076169741] [2023-11-17 15:58:32,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:58:32,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:32,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:32,394 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:32,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-17 15:58:32,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:32,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:32,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:32,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:32,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:32,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076169741] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:32,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:32,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-17 15:58:32,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395895079] [2023-11-17 15:58:32,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:32,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:32,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:32,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:32,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:58:32,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:32,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 419 transitions, 7347 flow. Second operand has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:32,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:32,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:32,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:32,979 INFO L124 PetriNetUnfolderBase]: 902/1483 cut-off events. [2023-11-17 15:58:32,979 INFO L125 PetriNetUnfolderBase]: For 45533/45533 co-relation queries the response was YES. [2023-11-17 15:58:32,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13741 conditions, 1483 events. 902/1483 cut-off events. For 45533/45533 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7270 event pairs, 46 based on Foata normal form. 12/1495 useless extension candidates. Maximal degree in co-relation 13629. Up to 951 conditions per place. [2023-11-17 15:58:32,997 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 336 selfloop transitions, 130 changer transitions 1/467 dead transitions. [2023-11-17 15:58:32,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 467 transitions, 8929 flow [2023-11-17 15:58:32,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:58:32,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:58:33,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2617 transitions. [2023-11-17 15:58:33,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42114579980688766 [2023-11-17 15:58:33,001 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2617 transitions. [2023-11-17 15:58:33,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2617 transitions. [2023-11-17 15:58:33,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:33,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2617 transitions. [2023-11-17 15:58:33,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 201.30769230769232) internal successors, (2617), 13 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:33,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 478.0) internal successors, (6692), 14 states have internal predecessors, (6692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:33,007 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 478.0) internal successors, (6692), 14 states have internal predecessors, (6692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:33,008 INFO L175 Difference]: Start difference. First operand has 287 places, 419 transitions, 7347 flow. Second operand 13 states and 2617 transitions. [2023-11-17 15:58:33,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 467 transitions, 8929 flow [2023-11-17 15:58:33,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 467 transitions, 8513 flow, removed 93 selfloop flow, removed 10 redundant places. [2023-11-17 15:58:33,213 INFO L231 Difference]: Finished difference. Result has 293 places, 440 transitions, 7767 flow [2023-11-17 15:58:33,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=7019, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7767, PETRI_PLACES=293, PETRI_TRANSITIONS=440} [2023-11-17 15:58:33,214 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 273 predicate places. [2023-11-17 15:58:33,214 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 440 transitions, 7767 flow [2023-11-17 15:58:33,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:33,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:33,215 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:33,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:33,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-17 15:58:33,416 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:33,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:33,416 INFO L85 PathProgramCache]: Analyzing trace with hash -860927593, now seen corresponding path program 27 times [2023-11-17 15:58:33,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:33,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798677724] [2023-11-17 15:58:33,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:33,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:33,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:33,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798677724] [2023-11-17 15:58:33,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798677724] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:33,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476796452] [2023-11-17 15:58:33,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:58:33,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:33,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:33,476 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:33,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-17 15:58:33,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 15:58:33,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:33,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:33,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:33,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:33,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476796452] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:33,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:33,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-11-17 15:58:33,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479290711] [2023-11-17 15:58:33,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:33,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:58:33,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:33,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:58:33,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:58:33,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:33,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 440 transitions, 7767 flow. Second operand has 13 states, 13 states have (on average 198.0) internal successors, (2574), 13 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:33,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:33,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:33,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:34,231 INFO L124 PetriNetUnfolderBase]: 945/1542 cut-off events. [2023-11-17 15:58:34,232 INFO L125 PetriNetUnfolderBase]: For 51129/51129 co-relation queries the response was YES. [2023-11-17 15:58:34,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14394 conditions, 1542 events. 945/1542 cut-off events. For 51129/51129 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7518 event pairs, 185 based on Foata normal form. 16/1558 useless extension candidates. Maximal degree in co-relation 14277. Up to 1273 conditions per place. [2023-11-17 15:58:34,251 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 368 selfloop transitions, 124 changer transitions 0/492 dead transitions. [2023-11-17 15:58:34,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 492 transitions, 9560 flow [2023-11-17 15:58:34,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 15:58:34,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 15:58:34,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3213 transitions. [2023-11-17 15:58:34,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201098326359833 [2023-11-17 15:58:34,255 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3213 transitions. [2023-11-17 15:58:34,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3213 transitions. [2023-11-17 15:58:34,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:34,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3213 transitions. [2023-11-17 15:58:34,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 200.8125) internal successors, (3213), 16 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:34,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 478.0) internal successors, (8126), 17 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:34,263 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 478.0) internal successors, (8126), 17 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:34,263 INFO L175 Difference]: Start difference. First operand has 293 places, 440 transitions, 7767 flow. Second operand 16 states and 3213 transitions. [2023-11-17 15:58:34,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 492 transitions, 9560 flow [2023-11-17 15:58:34,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 492 transitions, 9225 flow, removed 98 selfloop flow, removed 11 redundant places. [2023-11-17 15:58:34,530 INFO L231 Difference]: Finished difference. Result has 299 places, 464 transitions, 8477 flow [2023-11-17 15:58:34,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=7362, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=8477, PETRI_PLACES=299, PETRI_TRANSITIONS=464} [2023-11-17 15:58:34,531 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 279 predicate places. [2023-11-17 15:58:34,531 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 464 transitions, 8477 flow [2023-11-17 15:58:34,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 198.0) internal successors, (2574), 13 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:34,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:34,531 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:34,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-17 15:58:34,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:34,732 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:34,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1640721547, now seen corresponding path program 28 times [2023-11-17 15:58:34,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:34,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674854694] [2023-11-17 15:58:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:34,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:34,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:34,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674854694] [2023-11-17 15:58:34,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674854694] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:34,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632777069] [2023-11-17 15:58:34,808 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:58:34,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:34,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:34,809 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:34,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-17 15:58:34,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:58:34,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:34,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:34,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:34,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:34,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632777069] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:34,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:34,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 15:58:34,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145901644] [2023-11-17 15:58:34,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:34,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:58:34,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:34,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:58:34,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:58:34,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:34,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 464 transitions, 8477 flow. Second operand has 15 states, 15 states have (on average 197.86666666666667) internal successors, (2968), 15 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:34,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:34,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:34,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:35,563 INFO L124 PetriNetUnfolderBase]: 1000/1635 cut-off events. [2023-11-17 15:58:35,563 INFO L125 PetriNetUnfolderBase]: For 44130/44130 co-relation queries the response was YES. [2023-11-17 15:58:35,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14991 conditions, 1635 events. 1000/1635 cut-off events. For 44130/44130 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8179 event pairs, 39 based on Foata normal form. 12/1647 useless extension candidates. Maximal degree in co-relation 14875. Up to 1073 conditions per place. [2023-11-17 15:58:35,583 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 361 selfloop transitions, 168 changer transitions 0/529 dead transitions. [2023-11-17 15:58:35,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 529 transitions, 10065 flow [2023-11-17 15:58:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 15:58:35,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 15:58:35,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4603 transitions. [2023-11-17 15:58:35,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186829179552483 [2023-11-17 15:58:35,586 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4603 transitions. [2023-11-17 15:58:35,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4603 transitions. [2023-11-17 15:58:35,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:35,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4603 transitions. [2023-11-17 15:58:35,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 200.1304347826087) internal successors, (4603), 23 states have internal predecessors, (4603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:35,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 478.0) internal successors, (11472), 24 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:35,596 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 478.0) internal successors, (11472), 24 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:35,596 INFO L175 Difference]: Start difference. First operand has 299 places, 464 transitions, 8477 flow. Second operand 23 states and 4603 transitions. [2023-11-17 15:58:35,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 529 transitions, 10065 flow [2023-11-17 15:58:35,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 529 transitions, 9623 flow, removed 200 selfloop flow, removed 8 redundant places. [2023-11-17 15:58:35,830 INFO L231 Difference]: Finished difference. Result has 321 places, 498 transitions, 8902 flow [2023-11-17 15:58:35,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=8001, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=8902, PETRI_PLACES=321, PETRI_TRANSITIONS=498} [2023-11-17 15:58:35,831 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 301 predicate places. [2023-11-17 15:58:35,831 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 498 transitions, 8902 flow [2023-11-17 15:58:35,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 197.86666666666667) internal successors, (2968), 15 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:35,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:35,832 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:35,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-17 15:58:36,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-11-17 15:58:36,032 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:36,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:36,033 INFO L85 PathProgramCache]: Analyzing trace with hash -974382457, now seen corresponding path program 29 times [2023-11-17 15:58:36,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:36,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945324035] [2023-11-17 15:58:36,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:36,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:36,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:36,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:36,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945324035] [2023-11-17 15:58:36,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945324035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:36,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627432753] [2023-11-17 15:58:36,087 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:58:36,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:36,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:36,089 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:36,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-17 15:58:36,184 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:36,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:36,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:36,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:36,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:36,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627432753] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:36,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:36,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 15:58:36,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278603239] [2023-11-17 15:58:36,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:36,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:58:36,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:36,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:58:36,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:58:36,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:36,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 498 transitions, 8902 flow. Second operand has 15 states, 15 states have (on average 197.73333333333332) internal successors, (2966), 15 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:36,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:36,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:36,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:36,745 INFO L124 PetriNetUnfolderBase]: 1024/1677 cut-off events. [2023-11-17 15:58:36,745 INFO L125 PetriNetUnfolderBase]: For 43965/43965 co-relation queries the response was YES. [2023-11-17 15:58:36,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15434 conditions, 1677 events. 1024/1677 cut-off events. For 43965/43965 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8444 event pairs, 57 based on Foata normal form. 8/1685 useless extension candidates. Maximal degree in co-relation 15311. Up to 947 conditions per place. [2023-11-17 15:58:36,766 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 354 selfloop transitions, 185 changer transitions 8/547 dead transitions. [2023-11-17 15:58:36,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 547 transitions, 10502 flow [2023-11-17 15:58:36,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 15:58:36,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 15:58:36,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3417 transitions. [2023-11-17 15:58:36,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4205020920502092 [2023-11-17 15:58:36,768 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3417 transitions. [2023-11-17 15:58:36,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3417 transitions. [2023-11-17 15:58:36,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:36,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3417 transitions. [2023-11-17 15:58:36,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 201.0) internal successors, (3417), 17 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:36,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:36,774 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:36,775 INFO L175 Difference]: Start difference. First operand has 321 places, 498 transitions, 8902 flow. Second operand 17 states and 3417 transitions. [2023-11-17 15:58:36,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 547 transitions, 10502 flow [2023-11-17 15:58:37,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 547 transitions, 10366 flow, removed 35 selfloop flow, removed 9 redundant places. [2023-11-17 15:58:37,036 INFO L231 Difference]: Finished difference. Result has 332 places, 510 transitions, 9583 flow [2023-11-17 15:58:37,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=8758, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9583, PETRI_PLACES=332, PETRI_TRANSITIONS=510} [2023-11-17 15:58:37,037 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 312 predicate places. [2023-11-17 15:58:37,037 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 510 transitions, 9583 flow [2023-11-17 15:58:37,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 197.73333333333332) internal successors, (2966), 15 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:37,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:37,038 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:37,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-17 15:58:37,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:37,239 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:37,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:37,239 INFO L85 PathProgramCache]: Analyzing trace with hash -149869713, now seen corresponding path program 30 times [2023-11-17 15:58:37,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:37,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958870480] [2023-11-17 15:58:37,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:37,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:37,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:37,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958870480] [2023-11-17 15:58:37,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958870480] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:37,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288147531] [2023-11-17 15:58:37,302 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:58:37,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:37,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:37,305 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:37,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-17 15:58:37,416 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 15:58:37,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:37,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:37,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:37,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:37,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:37,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288147531] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:37,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:37,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-17 15:58:37,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271598395] [2023-11-17 15:58:37,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:37,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:58:37,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:37,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:58:37,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:58:37,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:37,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 510 transitions, 9583 flow. Second operand has 11 states, 11 states have (on average 198.0909090909091) internal successors, (2179), 11 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:37,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:37,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:37,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:38,021 INFO L124 PetriNetUnfolderBase]: 1075/1756 cut-off events. [2023-11-17 15:58:38,022 INFO L125 PetriNetUnfolderBase]: For 46617/46617 co-relation queries the response was YES. [2023-11-17 15:58:38,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16511 conditions, 1756 events. 1075/1756 cut-off events. For 46617/46617 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8898 event pairs, 16 based on Foata normal form. 6/1762 useless extension candidates. Maximal degree in co-relation 16383. Up to 879 conditions per place. [2023-11-17 15:58:38,044 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 358 selfloop transitions, 212 changer transitions 0/570 dead transitions. [2023-11-17 15:58:38,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 570 transitions, 11480 flow [2023-11-17 15:58:38,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:58:38,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:58:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2018 transitions. [2023-11-17 15:58:38,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4221757322175732 [2023-11-17 15:58:38,046 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2018 transitions. [2023-11-17 15:58:38,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2018 transitions. [2023-11-17 15:58:38,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:38,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2018 transitions. [2023-11-17 15:58:38,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 201.8) internal successors, (2018), 10 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:38,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:38,050 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:38,050 INFO L175 Difference]: Start difference. First operand has 332 places, 510 transitions, 9583 flow. Second operand 10 states and 2018 transitions. [2023-11-17 15:58:38,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 570 transitions, 11480 flow [2023-11-17 15:58:38,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 570 transitions, 11152 flow, removed 74 selfloop flow, removed 9 redundant places. [2023-11-17 15:58:38,297 INFO L231 Difference]: Finished difference. Result has 331 places, 538 transitions, 10216 flow [2023-11-17 15:58:38,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=9233, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10216, PETRI_PLACES=331, PETRI_TRANSITIONS=538} [2023-11-17 15:58:38,298 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 311 predicate places. [2023-11-17 15:58:38,298 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 538 transitions, 10216 flow [2023-11-17 15:58:38,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 198.0909090909091) internal successors, (2179), 11 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:38,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:38,298 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:38,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-17 15:58:38,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-17 15:58:38,500 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:38,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:38,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1471590737, now seen corresponding path program 31 times [2023-11-17 15:58:38,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:38,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031410462] [2023-11-17 15:58:38,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:38,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:38,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:38,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031410462] [2023-11-17 15:58:38,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031410462] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:38,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112074199] [2023-11-17 15:58:38,550 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:58:38,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:38,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:38,551 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:38,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-17 15:58:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:38,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:38,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:38,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:38,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112074199] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:38,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:38,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-17 15:58:38,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501093591] [2023-11-17 15:58:38,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:38,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:38,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:38,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:38,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:58:38,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:38,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 538 transitions, 10216 flow. Second operand has 12 states, 12 states have (on average 198.08333333333334) internal successors, (2377), 12 states have internal predecessors, (2377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:38,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:38,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:38,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:39,236 INFO L124 PetriNetUnfolderBase]: 1102/1795 cut-off events. [2023-11-17 15:58:39,236 INFO L125 PetriNetUnfolderBase]: For 54072/54072 co-relation queries the response was YES. [2023-11-17 15:58:39,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17229 conditions, 1795 events. 1102/1795 cut-off events. For 54072/54072 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9170 event pairs, 162 based on Foata normal form. 12/1807 useless extension candidates. Maximal degree in co-relation 17097. Up to 1230 conditions per place. [2023-11-17 15:58:39,259 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 375 selfloop transitions, 209 changer transitions 0/584 dead transitions. [2023-11-17 15:58:39,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 584 transitions, 12174 flow [2023-11-17 15:58:39,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 15:58:39,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 15:58:39,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3216 transitions. [2023-11-17 15:58:39,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4205020920502092 [2023-11-17 15:58:39,261 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3216 transitions. [2023-11-17 15:58:39,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3216 transitions. [2023-11-17 15:58:39,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:39,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3216 transitions. [2023-11-17 15:58:39,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 201.0) internal successors, (3216), 16 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:39,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 478.0) internal successors, (8126), 17 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:39,267 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 478.0) internal successors, (8126), 17 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:39,267 INFO L175 Difference]: Start difference. First operand has 331 places, 538 transitions, 10216 flow. Second operand 16 states and 3216 transitions. [2023-11-17 15:58:39,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 584 transitions, 12174 flow [2023-11-17 15:58:39,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 584 transitions, 11791 flow, removed 26 selfloop flow, removed 12 redundant places. [2023-11-17 15:58:39,497 INFO L231 Difference]: Finished difference. Result has 337 places, 554 transitions, 10968 flow [2023-11-17 15:58:39,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=9713, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10968, PETRI_PLACES=337, PETRI_TRANSITIONS=554} [2023-11-17 15:58:39,498 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 317 predicate places. [2023-11-17 15:58:39,498 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 554 transitions, 10968 flow [2023-11-17 15:58:39,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.08333333333334) internal successors, (2377), 12 states have internal predecessors, (2377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:39,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:39,498 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:39,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:39,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:39,699 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:39,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:39,699 INFO L85 PathProgramCache]: Analyzing trace with hash 970316817, now seen corresponding path program 32 times [2023-11-17 15:58:39,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:39,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026542773] [2023-11-17 15:58:39,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:39,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:39,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:39,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026542773] [2023-11-17 15:58:39,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026542773] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:39,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042093010] [2023-11-17 15:58:39,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:58:39,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:39,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:39,752 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:39,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-17 15:58:39,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:39,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:39,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:39,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:39,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:39,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:39,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:39,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042093010] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:39,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:39,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-17 15:58:39,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188451431] [2023-11-17 15:58:39,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:39,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:39,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:39,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:39,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:58:39,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:39,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 554 transitions, 10968 flow. Second operand has 12 states, 12 states have (on average 198.08333333333334) internal successors, (2377), 12 states have internal predecessors, (2377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:39,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:39,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:39,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:40,394 INFO L124 PetriNetUnfolderBase]: 1102/1791 cut-off events. [2023-11-17 15:58:40,394 INFO L125 PetriNetUnfolderBase]: For 48422/48422 co-relation queries the response was YES. [2023-11-17 15:58:40,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17549 conditions, 1791 events. 1102/1791 cut-off events. For 48422/48422 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9114 event pairs, 162 based on Foata normal form. 4/1795 useless extension candidates. Maximal degree in co-relation 17421. Up to 1224 conditions per place. [2023-11-17 15:58:40,417 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 377 selfloop transitions, 195 changer transitions 2/574 dead transitions. [2023-11-17 15:58:40,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 574 transitions, 12376 flow [2023-11-17 15:58:40,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:58:40,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:58:40,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2411 transitions. [2023-11-17 15:58:40,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42032775453277543 [2023-11-17 15:58:40,419 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2411 transitions. [2023-11-17 15:58:40,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2411 transitions. [2023-11-17 15:58:40,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:40,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2411 transitions. [2023-11-17 15:58:40,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 200.91666666666666) internal successors, (2411), 12 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:40,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:40,423 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:40,423 INFO L175 Difference]: Start difference. First operand has 337 places, 554 transitions, 10968 flow. Second operand 12 states and 2411 transitions. [2023-11-17 15:58:40,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 574 transitions, 12376 flow [2023-11-17 15:58:40,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 574 transitions, 11854 flow, removed 185 selfloop flow, removed 10 redundant places. [2023-11-17 15:58:40,687 INFO L231 Difference]: Finished difference. Result has 338 places, 553 transitions, 10877 flow [2023-11-17 15:58:40,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=10418, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10877, PETRI_PLACES=338, PETRI_TRANSITIONS=553} [2023-11-17 15:58:40,688 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 318 predicate places. [2023-11-17 15:58:40,688 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 553 transitions, 10877 flow [2023-11-17 15:58:40,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.08333333333334) internal successors, (2377), 12 states have internal predecessors, (2377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:40,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:40,688 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:40,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-17 15:58:40,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-17 15:58:40,892 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:40,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:40,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1754029055, now seen corresponding path program 33 times [2023-11-17 15:58:40,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:40,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980432446] [2023-11-17 15:58:40,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:40,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:40,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:40,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980432446] [2023-11-17 15:58:40,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980432446] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:40,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706716554] [2023-11-17 15:58:40,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:58:40,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:40,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:40,945 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:40,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-17 15:58:41,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:58:41,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:41,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:58:41,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:41,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:41,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706716554] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:41,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:41,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-17 15:58:41,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125614716] [2023-11-17 15:58:41,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:41,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:41,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:41,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:41,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:58:41,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:58:41,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 553 transitions, 10877 flow. Second operand has 12 states, 12 states have (on average 198.16666666666666) internal successors, (2378), 12 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:41,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:41,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:58:41,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:41,658 INFO L124 PetriNetUnfolderBase]: 1096/1785 cut-off events. [2023-11-17 15:58:41,658 INFO L125 PetriNetUnfolderBase]: For 45073/45073 co-relation queries the response was YES. [2023-11-17 15:58:41,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17400 conditions, 1785 events. 1096/1785 cut-off events. For 45073/45073 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9088 event pairs, 46 based on Foata normal form. 10/1795 useless extension candidates. Maximal degree in co-relation 17271. Up to 1082 conditions per place. [2023-11-17 15:58:41,679 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 368 selfloop transitions, 211 changer transitions 0/579 dead transitions. [2023-11-17 15:58:41,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 579 transitions, 12120 flow [2023-11-17 15:58:41,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 15:58:41,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 15:58:41,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3211 transitions. [2023-11-17 15:58:41,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41984832635983266 [2023-11-17 15:58:41,682 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3211 transitions. [2023-11-17 15:58:41,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3211 transitions. [2023-11-17 15:58:41,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:41,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3211 transitions. [2023-11-17 15:58:41,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 200.6875) internal successors, (3211), 16 states have internal predecessors, (3211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:41,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 478.0) internal successors, (8126), 17 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:41,690 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 478.0) internal successors, (8126), 17 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:41,690 INFO L175 Difference]: Start difference. First operand has 338 places, 553 transitions, 10877 flow. Second operand 16 states and 3211 transitions. [2023-11-17 15:58:41,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 579 transitions, 12120 flow [2023-11-17 15:58:41,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 579 transitions, 11607 flow, removed 22 selfloop flow, removed 13 redundant places. [2023-11-17 15:58:41,962 INFO L231 Difference]: Finished difference. Result has 337 places, 555 transitions, 10812 flow [2023-11-17 15:58:41,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=10194, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10812, PETRI_PLACES=337, PETRI_TRANSITIONS=555} [2023-11-17 15:58:41,963 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 317 predicate places. [2023-11-17 15:58:41,964 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 555 transitions, 10812 flow [2023-11-17 15:58:41,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.16666666666666) internal successors, (2378), 12 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:41,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:41,964 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:41,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-17 15:58:42,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-17 15:58:42,170 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:42,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:42,170 INFO L85 PathProgramCache]: Analyzing trace with hash 381687989, now seen corresponding path program 34 times [2023-11-17 15:58:42,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:42,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963894893] [2023-11-17 15:58:42,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:42,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:42,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:42,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:42,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963894893] [2023-11-17 15:58:42,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963894893] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:42,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945046087] [2023-11-17 15:58:42,349 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:58:42,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:42,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:42,353 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:42,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-17 15:58:42,462 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:58:42,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:42,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:58:42,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:42,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:42,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945046087] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:42,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:42,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-17 15:58:42,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077299637] [2023-11-17 15:58:42,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:42,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 15:58:42,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:42,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 15:58:42,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:58:42,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:58:42,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 555 transitions, 10812 flow. Second operand has 18 states, 18 states have (on average 188.44444444444446) internal successors, (3392), 18 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:42,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:42,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:58:42,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:43,660 INFO L124 PetriNetUnfolderBase]: 1288/2151 cut-off events. [2023-11-17 15:58:43,660 INFO L125 PetriNetUnfolderBase]: For 58642/58642 co-relation queries the response was YES. [2023-11-17 15:58:43,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20844 conditions, 2151 events. 1288/2151 cut-off events. For 58642/58642 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11798 event pairs, 40 based on Foata normal form. 2/2153 useless extension candidates. Maximal degree in co-relation 20717. Up to 1658 conditions per place. [2023-11-17 15:58:43,705 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 563 selfloop transitions, 108 changer transitions 14/685 dead transitions. [2023-11-17 15:58:43,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 685 transitions, 14290 flow [2023-11-17 15:58:43,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:58:43,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:58:43,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2129 transitions. [2023-11-17 15:58:43,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40490680867249906 [2023-11-17 15:58:43,708 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2129 transitions. [2023-11-17 15:58:43,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2129 transitions. [2023-11-17 15:58:43,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:43,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2129 transitions. [2023-11-17 15:58:43,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 193.54545454545453) internal successors, (2129), 11 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:43,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 478.0) internal successors, (5736), 12 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:43,712 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 478.0) internal successors, (5736), 12 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:43,712 INFO L175 Difference]: Start difference. First operand has 337 places, 555 transitions, 10812 flow. Second operand 11 states and 2129 transitions. [2023-11-17 15:58:43,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 685 transitions, 14290 flow [2023-11-17 15:58:44,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 685 transitions, 13887 flow, removed 19 selfloop flow, removed 12 redundant places. [2023-11-17 15:58:44,105 INFO L231 Difference]: Finished difference. Result has 344 places, 614 transitions, 12080 flow [2023-11-17 15:58:44,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=10443, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12080, PETRI_PLACES=344, PETRI_TRANSITIONS=614} [2023-11-17 15:58:44,106 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 324 predicate places. [2023-11-17 15:58:44,107 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 614 transitions, 12080 flow [2023-11-17 15:58:44,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 188.44444444444446) internal successors, (3392), 18 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:44,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:44,107 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:44,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:44,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-17 15:58:44,313 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:44,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:44,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1352928439, now seen corresponding path program 35 times [2023-11-17 15:58:44,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:44,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417066821] [2023-11-17 15:58:44,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:44,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:44,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:44,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417066821] [2023-11-17 15:58:44,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417066821] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:44,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411911896] [2023-11-17 15:58:44,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:58:44,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:44,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:44,512 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:44,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-17 15:58:44,625 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:44,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:44,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:58:44,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:44,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:44,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:44,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:44,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411911896] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:44,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:44,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 15:58:44,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011199588] [2023-11-17 15:58:44,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:44,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 15:58:44,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:44,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 15:58:44,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:58:44,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:58:44,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 614 transitions, 12080 flow. Second operand has 16 states, 16 states have (on average 188.375) internal successors, (3014), 16 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:44,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:44,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:58:44,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:45,770 INFO L124 PetriNetUnfolderBase]: 1304/2187 cut-off events. [2023-11-17 15:58:45,770 INFO L125 PetriNetUnfolderBase]: For 65051/65051 co-relation queries the response was YES. [2023-11-17 15:58:45,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21692 conditions, 2187 events. 1304/2187 cut-off events. For 65051/65051 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 12126 event pairs, 38 based on Foata normal form. 2/2189 useless extension candidates. Maximal degree in co-relation 21556. Up to 1808 conditions per place. [2023-11-17 15:58:45,800 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 559 selfloop transitions, 91 changer transitions 20/670 dead transitions. [2023-11-17 15:58:45,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 670 transitions, 14103 flow [2023-11-17 15:58:45,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:58:45,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:58:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2307 transitions. [2023-11-17 15:58:45,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40219665271966526 [2023-11-17 15:58:45,802 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2307 transitions. [2023-11-17 15:58:45,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2307 transitions. [2023-11-17 15:58:45,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:45,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2307 transitions. [2023-11-17 15:58:45,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 192.25) internal successors, (2307), 12 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:45,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:45,806 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:45,806 INFO L175 Difference]: Start difference. First operand has 344 places, 614 transitions, 12080 flow. Second operand 12 states and 2307 transitions. [2023-11-17 15:58:45,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 670 transitions, 14103 flow [2023-11-17 15:58:46,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 670 transitions, 13705 flow, removed 197 selfloop flow, removed 3 redundant places. [2023-11-17 15:58:46,250 INFO L231 Difference]: Finished difference. Result has 355 places, 619 transitions, 12128 flow [2023-11-17 15:58:46,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=11764, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12128, PETRI_PLACES=355, PETRI_TRANSITIONS=619} [2023-11-17 15:58:46,251 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 335 predicate places. [2023-11-17 15:58:46,251 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 619 transitions, 12128 flow [2023-11-17 15:58:46,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 188.375) internal successors, (3014), 16 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:46,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:46,252 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:46,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:46,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-17 15:58:46,458 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:46,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:46,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1299427881, now seen corresponding path program 36 times [2023-11-17 15:58:46,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:46,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113562634] [2023-11-17 15:58:46,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:46,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:46,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:46,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113562634] [2023-11-17 15:58:46,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113562634] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:46,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679293577] [2023-11-17 15:58:46,612 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:58:46,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:46,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:46,617 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:46,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-17 15:58:46,722 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 15:58:46,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:46,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:58:46,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:46,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:46,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:47,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679293577] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:47,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:47,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 15:58:47,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981758164] [2023-11-17 15:58:47,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:47,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 15:58:47,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:47,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 15:58:47,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:58:47,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:58:47,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 619 transitions, 12128 flow. Second operand has 17 states, 17 states have (on average 188.41176470588235) internal successors, (3203), 17 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:47,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:47,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:58:47,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:47,876 INFO L124 PetriNetUnfolderBase]: 1279/2141 cut-off events. [2023-11-17 15:58:47,876 INFO L125 PetriNetUnfolderBase]: For 54993/54993 co-relation queries the response was YES. [2023-11-17 15:58:47,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20800 conditions, 2141 events. 1279/2141 cut-off events. For 54993/54993 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11752 event pairs, 37 based on Foata normal form. 1/2142 useless extension candidates. Maximal degree in co-relation 20661. Up to 1666 conditions per place. [2023-11-17 15:58:47,905 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 553 selfloop transitions, 109 changer transitions 5/667 dead transitions. [2023-11-17 15:58:47,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 667 transitions, 14009 flow [2023-11-17 15:58:47,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:58:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:58:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1744 transitions. [2023-11-17 15:58:47,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40539284053928404 [2023-11-17 15:58:47,907 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1744 transitions. [2023-11-17 15:58:47,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1744 transitions. [2023-11-17 15:58:47,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:47,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1744 transitions. [2023-11-17 15:58:47,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 193.77777777777777) internal successors, (1744), 9 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:47,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 478.0) internal successors, (4780), 10 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:47,911 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 478.0) internal successors, (4780), 10 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:47,911 INFO L175 Difference]: Start difference. First operand has 355 places, 619 transitions, 12128 flow. Second operand 9 states and 1744 transitions. [2023-11-17 15:58:47,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 667 transitions, 14009 flow [2023-11-17 15:58:48,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 667 transitions, 13664 flow, removed 109 selfloop flow, removed 6 redundant places. [2023-11-17 15:58:48,261 INFO L231 Difference]: Finished difference. Result has 357 places, 623 transitions, 12183 flow [2023-11-17 15:58:48,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=11791, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12183, PETRI_PLACES=357, PETRI_TRANSITIONS=623} [2023-11-17 15:58:48,262 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 337 predicate places. [2023-11-17 15:58:48,262 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 623 transitions, 12183 flow [2023-11-17 15:58:48,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 188.41176470588235) internal successors, (3203), 17 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:48,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:48,262 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:48,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:48,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-11-17 15:58:48,463 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:48,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:48,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1618016991, now seen corresponding path program 37 times [2023-11-17 15:58:48,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:48,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058314424] [2023-11-17 15:58:48,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:48,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:48,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:48,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058314424] [2023-11-17 15:58:48,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058314424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:48,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824866490] [2023-11-17 15:58:48,633 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:58:48,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:48,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:48,634 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:48,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-17 15:58:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:48,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:58:48,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:48,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:49,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:49,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824866490] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:49,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:49,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-17 15:58:49,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921063541] [2023-11-17 15:58:49,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:49,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 15:58:49,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:49,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 15:58:49,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:58:49,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:58:49,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 623 transitions, 12183 flow. Second operand has 18 states, 18 states have (on average 188.33333333333334) internal successors, (3390), 18 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:49,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:49,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:58:49,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:49,873 INFO L124 PetriNetUnfolderBase]: 1276/2132 cut-off events. [2023-11-17 15:58:49,874 INFO L125 PetriNetUnfolderBase]: For 55783/55783 co-relation queries the response was YES. [2023-11-17 15:58:49,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20516 conditions, 2132 events. 1276/2132 cut-off events. For 55783/55783 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 11681 event pairs, 36 based on Foata normal form. 1/2133 useless extension candidates. Maximal degree in co-relation 20376. Up to 1730 conditions per place. [2023-11-17 15:58:49,904 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 556 selfloop transitions, 109 changer transitions 5/670 dead transitions. [2023-11-17 15:58:49,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 670 transitions, 14015 flow [2023-11-17 15:58:49,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:58:49,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:58:49,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2118 transitions. [2023-11-17 15:58:49,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.402814758463294 [2023-11-17 15:58:49,907 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2118 transitions. [2023-11-17 15:58:49,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2118 transitions. [2023-11-17 15:58:49,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:49,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2118 transitions. [2023-11-17 15:58:49,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 192.54545454545453) internal successors, (2118), 11 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:49,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 478.0) internal successors, (5736), 12 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:49,912 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 478.0) internal successors, (5736), 12 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:49,912 INFO L175 Difference]: Start difference. First operand has 357 places, 623 transitions, 12183 flow. Second operand 11 states and 2118 transitions. [2023-11-17 15:58:49,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 670 transitions, 14015 flow [2023-11-17 15:58:50,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 670 transitions, 13736 flow, removed 49 selfloop flow, removed 6 redundant places. [2023-11-17 15:58:50,257 INFO L231 Difference]: Finished difference. Result has 363 places, 630 transitions, 12364 flow [2023-11-17 15:58:50,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=11914, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12364, PETRI_PLACES=363, PETRI_TRANSITIONS=630} [2023-11-17 15:58:50,258 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 343 predicate places. [2023-11-17 15:58:50,258 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 630 transitions, 12364 flow [2023-11-17 15:58:50,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 188.33333333333334) internal successors, (3390), 18 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:50,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:50,259 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:50,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:50,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:50,464 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:50,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:50,465 INFO L85 PathProgramCache]: Analyzing trace with hash -263243091, now seen corresponding path program 38 times [2023-11-17 15:58:50,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:50,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369791724] [2023-11-17 15:58:50,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:50,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:50,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:50,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369791724] [2023-11-17 15:58:50,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369791724] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:50,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29356159] [2023-11-17 15:58:50,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:58:50,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:50,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:50,682 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:50,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-17 15:58:50,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:50,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:50,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:58:50,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:50,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:51,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29356159] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:51,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:51,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 15 [2023-11-17 15:58:51,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696561364] [2023-11-17 15:58:51,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:51,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 15:58:51,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:51,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 15:58:51,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:58:51,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:58:51,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 630 transitions, 12364 flow. Second operand has 17 states, 17 states have (on average 188.58823529411765) internal successors, (3206), 17 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:51,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:51,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:58:51,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:51,816 INFO L124 PetriNetUnfolderBase]: 1300/2182 cut-off events. [2023-11-17 15:58:51,816 INFO L125 PetriNetUnfolderBase]: For 59137/59137 co-relation queries the response was YES. [2023-11-17 15:58:51,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21049 conditions, 2182 events. 1300/2182 cut-off events. For 59137/59137 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 12104 event pairs, 55 based on Foata normal form. 1/2183 useless extension candidates. Maximal degree in co-relation 20907. Up to 1991 conditions per place. [2023-11-17 15:58:51,861 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 594 selfloop transitions, 71 changer transitions 5/670 dead transitions. [2023-11-17 15:58:51,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 670 transitions, 14130 flow [2023-11-17 15:58:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:58:51,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:58:51,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1542 transitions. [2023-11-17 15:58:51,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40324267782426776 [2023-11-17 15:58:51,863 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1542 transitions. [2023-11-17 15:58:51,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1542 transitions. [2023-11-17 15:58:51,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:51,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1542 transitions. [2023-11-17 15:58:51,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 192.75) internal successors, (1542), 8 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:51,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 478.0) internal successors, (4302), 9 states have internal predecessors, (4302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:51,867 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 478.0) internal successors, (4302), 9 states have internal predecessors, (4302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:51,867 INFO L175 Difference]: Start difference. First operand has 363 places, 630 transitions, 12364 flow. Second operand 8 states and 1542 transitions. [2023-11-17 15:58:51,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 670 transitions, 14130 flow [2023-11-17 15:58:52,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 670 transitions, 13915 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-11-17 15:58:52,298 INFO L231 Difference]: Finished difference. Result has 365 places, 646 transitions, 12693 flow [2023-11-17 15:58:52,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=12151, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12693, PETRI_PLACES=365, PETRI_TRANSITIONS=646} [2023-11-17 15:58:52,299 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 345 predicate places. [2023-11-17 15:58:52,299 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 646 transitions, 12693 flow [2023-11-17 15:58:52,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 188.58823529411765) internal successors, (3206), 17 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:52,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:52,300 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:52,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-17 15:58:52,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-11-17 15:58:52,500 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:52,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:52,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1129848019, now seen corresponding path program 39 times [2023-11-17 15:58:52,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:52,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728751832] [2023-11-17 15:58:52,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:52,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:52,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:52,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728751832] [2023-11-17 15:58:52,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728751832] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:52,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86348433] [2023-11-17 15:58:52,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:58:52,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:52,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:52,697 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:52,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-17 15:58:52,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 15:58:52,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:52,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:58:52,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:52,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:52,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:53,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86348433] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:53,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:53,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 17 [2023-11-17 15:58:53,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320227544] [2023-11-17 15:58:53,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:53,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 15:58:53,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:53,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 15:58:53,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-11-17 15:58:53,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:58:53,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 646 transitions, 12693 flow. Second operand has 19 states, 19 states have (on average 188.42105263157896) internal successors, (3580), 19 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:53,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:53,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:58:53,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:53,889 INFO L124 PetriNetUnfolderBase]: 1343/2251 cut-off events. [2023-11-17 15:58:53,890 INFO L125 PetriNetUnfolderBase]: For 63523/63523 co-relation queries the response was YES. [2023-11-17 15:58:53,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21770 conditions, 2251 events. 1343/2251 cut-off events. For 63523/63523 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 12533 event pairs, 53 based on Foata normal form. 1/2252 useless extension candidates. Maximal degree in co-relation 21626. Up to 1998 conditions per place. [2023-11-17 15:58:53,923 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 602 selfloop transitions, 87 changer transitions 7/696 dead transitions. [2023-11-17 15:58:53,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 696 transitions, 14719 flow [2023-11-17 15:58:53,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:58:53,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:58:53,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1549 transitions. [2023-11-17 15:58:53,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050732217573222 [2023-11-17 15:58:53,925 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1549 transitions. [2023-11-17 15:58:53,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1549 transitions. [2023-11-17 15:58:53,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:53,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1549 transitions. [2023-11-17 15:58:53,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 193.625) internal successors, (1549), 8 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:53,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 478.0) internal successors, (4302), 9 states have internal predecessors, (4302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:53,929 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 478.0) internal successors, (4302), 9 states have internal predecessors, (4302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:53,929 INFO L175 Difference]: Start difference. First operand has 365 places, 646 transitions, 12693 flow. Second operand 8 states and 1549 transitions. [2023-11-17 15:58:53,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 696 transitions, 14719 flow [2023-11-17 15:58:54,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 696 transitions, 14441 flow, removed 92 selfloop flow, removed 4 redundant places. [2023-11-17 15:58:54,417 INFO L231 Difference]: Finished difference. Result has 370 places, 662 transitions, 13022 flow [2023-11-17 15:58:54,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=12419, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13022, PETRI_PLACES=370, PETRI_TRANSITIONS=662} [2023-11-17 15:58:54,418 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 350 predicate places. [2023-11-17 15:58:54,418 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 662 transitions, 13022 flow [2023-11-17 15:58:54,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 188.42105263157896) internal successors, (3580), 19 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:54,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:54,418 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:54,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-17 15:58:54,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:54,619 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:54,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:54,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1271460979, now seen corresponding path program 40 times [2023-11-17 15:58:54,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:54,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384130125] [2023-11-17 15:58:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:54,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:54,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:54,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:54,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384130125] [2023-11-17 15:58:54,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384130125] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:54,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877717443] [2023-11-17 15:58:54,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:58:54,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:54,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:54,781 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:54,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-17 15:58:54,891 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:58:54,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:54,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:58:54,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:54,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:55,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:55,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877717443] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:55,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:55,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 16 [2023-11-17 15:58:55,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604226770] [2023-11-17 15:58:55,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:55,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 15:58:55,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:55,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 15:58:55,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:58:55,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:58:55,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 662 transitions, 13022 flow. Second operand has 18 states, 18 states have (on average 188.44444444444446) internal successors, (3392), 18 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:55,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:55,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:58:55,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:55,870 INFO L124 PetriNetUnfolderBase]: 1339/2239 cut-off events. [2023-11-17 15:58:55,871 INFO L125 PetriNetUnfolderBase]: For 61345/61345 co-relation queries the response was YES. [2023-11-17 15:58:55,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21595 conditions, 2239 events. 1339/2239 cut-off events. For 61345/61345 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 12400 event pairs, 53 based on Foata normal form. 1/2240 useless extension candidates. Maximal degree in co-relation 21449. Up to 1998 conditions per place. [2023-11-17 15:58:55,903 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 597 selfloop transitions, 86 changer transitions 6/689 dead transitions. [2023-11-17 15:58:55,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 689 transitions, 14570 flow [2023-11-17 15:58:55,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:58:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:58:55,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1545 transitions. [2023-11-17 15:58:55,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4040271966527197 [2023-11-17 15:58:55,906 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1545 transitions. [2023-11-17 15:58:55,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1545 transitions. [2023-11-17 15:58:55,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:55,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1545 transitions. [2023-11-17 15:58:55,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 193.125) internal successors, (1545), 8 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:55,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 478.0) internal successors, (4302), 9 states have internal predecessors, (4302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:55,909 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 478.0) internal successors, (4302), 9 states have internal predecessors, (4302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:55,909 INFO L175 Difference]: Start difference. First operand has 370 places, 662 transitions, 13022 flow. Second operand 8 states and 1545 transitions. [2023-11-17 15:58:55,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 689 transitions, 14570 flow [2023-11-17 15:58:56,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 689 transitions, 14300 flow, removed 68 selfloop flow, removed 5 redundant places. [2023-11-17 15:58:56,294 INFO L231 Difference]: Finished difference. Result has 373 places, 664 transitions, 13034 flow [2023-11-17 15:58:56,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=12754, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13034, PETRI_PLACES=373, PETRI_TRANSITIONS=664} [2023-11-17 15:58:56,295 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 353 predicate places. [2023-11-17 15:58:56,295 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 664 transitions, 13034 flow [2023-11-17 15:58:56,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 188.44444444444446) internal successors, (3392), 18 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:56,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:56,296 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:56,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:56,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-11-17 15:58:56,501 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:56,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:56,501 INFO L85 PathProgramCache]: Analyzing trace with hash 225912361, now seen corresponding path program 41 times [2023-11-17 15:58:56,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:56,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175486038] [2023-11-17 15:58:56,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:56,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:56,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:56,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175486038] [2023-11-17 15:58:56,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175486038] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:56,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506918981] [2023-11-17 15:58:56,679 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:58:56,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:56,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:56,680 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:56,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-17 15:58:56,768 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:56,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:56,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:58:56,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:56,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:57,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:57,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506918981] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:57,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:57,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-17 15:58:57,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692808703] [2023-11-17 15:58:57,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:57,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 15:58:57,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:57,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 15:58:57,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:58:57,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:58:57,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 664 transitions, 13034 flow. Second operand has 18 states, 18 states have (on average 188.44444444444446) internal successors, (3392), 18 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:57,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:57,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:58:57,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:58,112 INFO L124 PetriNetUnfolderBase]: 1498/2553 cut-off events. [2023-11-17 15:58:58,113 INFO L125 PetriNetUnfolderBase]: For 74903/74903 co-relation queries the response was YES. [2023-11-17 15:58:58,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24701 conditions, 2553 events. 1498/2553 cut-off events. For 74903/74903 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 14949 event pairs, 64 based on Foata normal form. 2/2555 useless extension candidates. Maximal degree in co-relation 24554. Up to 2164 conditions per place. [2023-11-17 15:58:58,215 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 667 selfloop transitions, 114 changer transitions 24/805 dead transitions. [2023-11-17 15:58:58,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 805 transitions, 16954 flow [2023-11-17 15:58:58,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:58:58,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:58:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2318 transitions. [2023-11-17 15:58:58,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041143654114365 [2023-11-17 15:58:58,217 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2318 transitions. [2023-11-17 15:58:58,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2318 transitions. [2023-11-17 15:58:58,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:58,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2318 transitions. [2023-11-17 15:58:58,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 193.16666666666666) internal successors, (2318), 12 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:58,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:58,221 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:58,221 INFO L175 Difference]: Start difference. First operand has 373 places, 664 transitions, 13034 flow. Second operand 12 states and 2318 transitions. [2023-11-17 15:58:58,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 805 transitions, 16954 flow [2023-11-17 15:58:58,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 805 transitions, 16762 flow, removed 29 selfloop flow, removed 5 redundant places. [2023-11-17 15:58:58,689 INFO L231 Difference]: Finished difference. Result has 388 places, 729 transitions, 14739 flow [2023-11-17 15:58:58,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=12852, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14739, PETRI_PLACES=388, PETRI_TRANSITIONS=729} [2023-11-17 15:58:58,690 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 368 predicate places. [2023-11-17 15:58:58,690 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 729 transitions, 14739 flow [2023-11-17 15:58:58,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 188.44444444444446) internal successors, (3392), 18 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:58,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:58,691 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:58,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-11-17 15:58:58,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:58,891 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:58,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash -640692567, now seen corresponding path program 42 times [2023-11-17 15:58:58,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:58,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567603275] [2023-11-17 15:58:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:58,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:59,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:59,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567603275] [2023-11-17 15:58:59,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567603275] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:59,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941452785] [2023-11-17 15:58:59,067 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:58:59,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:59,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:59,069 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:59,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-17 15:58:59,188 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 15:58:59,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:59,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:58:59,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:59,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:59,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941452785] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:59,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:59,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-11-17 15:58:59,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202389518] [2023-11-17 15:58:59,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:59,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 15:58:59,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:59,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 15:58:59,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-11-17 15:58:59,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:58:59,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 729 transitions, 14739 flow. Second operand has 20 states, 20 states have (on average 188.3) internal successors, (3766), 20 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:59,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:59,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:58:59,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:00,549 INFO L124 PetriNetUnfolderBase]: 1506/2568 cut-off events. [2023-11-17 15:59:00,549 INFO L125 PetriNetUnfolderBase]: For 84226/84226 co-relation queries the response was YES. [2023-11-17 15:59:00,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25661 conditions, 2568 events. 1506/2568 cut-off events. For 84226/84226 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 15022 event pairs, 67 based on Foata normal form. 1/2569 useless extension candidates. Maximal degree in co-relation 25505. Up to 2158 conditions per place. [2023-11-17 15:59:00,586 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 684 selfloop transitions, 112 changer transitions 5/801 dead transitions. [2023-11-17 15:59:00,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 801 transitions, 17437 flow [2023-11-17 15:59:00,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:59:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:59:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1940 transitions. [2023-11-17 15:59:00,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40585774058577406 [2023-11-17 15:59:00,588 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1940 transitions. [2023-11-17 15:59:00,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1940 transitions. [2023-11-17 15:59:00,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:00,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1940 transitions. [2023-11-17 15:59:00,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 194.0) internal successors, (1940), 10 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:00,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:00,592 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:00,592 INFO L175 Difference]: Start difference. First operand has 388 places, 729 transitions, 14739 flow. Second operand 10 states and 1940 transitions. [2023-11-17 15:59:00,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 801 transitions, 17437 flow [2023-11-17 15:59:01,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 801 transitions, 16851 flow, removed 293 selfloop flow, removed 2 redundant places. [2023-11-17 15:59:01,135 INFO L231 Difference]: Finished difference. Result has 396 places, 741 transitions, 14855 flow [2023-11-17 15:59:01,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=14181, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14855, PETRI_PLACES=396, PETRI_TRANSITIONS=741} [2023-11-17 15:59:01,136 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 376 predicate places. [2023-11-17 15:59:01,136 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 741 transitions, 14855 flow [2023-11-17 15:59:01,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 188.3) internal successors, (3766), 20 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:01,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:01,137 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:01,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-11-17 15:59:01,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:01,337 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:01,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:01,338 INFO L85 PathProgramCache]: Analyzing trace with hash -782305527, now seen corresponding path program 43 times [2023-11-17 15:59:01,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:01,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154718732] [2023-11-17 15:59:01,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:01,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:01,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:01,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:01,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154718732] [2023-11-17 15:59:01,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154718732] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:01,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821633468] [2023-11-17 15:59:01,507 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:59:01,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:01,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:01,509 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:01,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-17 15:59:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:01,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:59:01,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:01,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:01,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:01,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821633468] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:01,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:01,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-17 15:59:01,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307671416] [2023-11-17 15:59:01,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:01,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 15:59:01,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:01,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 15:59:01,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:59:01,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:59:01,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 741 transitions, 14855 flow. Second operand has 18 states, 18 states have (on average 188.38888888888889) internal successors, (3391), 18 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:01,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:01,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:59:01,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:02,939 INFO L124 PetriNetUnfolderBase]: 1505/2560 cut-off events. [2023-11-17 15:59:02,939 INFO L125 PetriNetUnfolderBase]: For 75824/75824 co-relation queries the response was YES. [2023-11-17 15:59:02,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25063 conditions, 2560 events. 1505/2560 cut-off events. For 75824/75824 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 14949 event pairs, 65 based on Foata normal form. 2/2562 useless extension candidates. Maximal degree in co-relation 24905. Up to 2158 conditions per place. [2023-11-17 15:59:02,978 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 673 selfloop transitions, 111 changer transitions 13/797 dead transitions. [2023-11-17 15:59:02,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 797 transitions, 17147 flow [2023-11-17 15:59:02,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:59:02,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:59:02,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2124 transitions. [2023-11-17 15:59:02,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40395587675922406 [2023-11-17 15:59:02,979 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2124 transitions. [2023-11-17 15:59:02,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2124 transitions. [2023-11-17 15:59:02,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:02,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2124 transitions. [2023-11-17 15:59:02,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 193.0909090909091) internal successors, (2124), 11 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:02,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 478.0) internal successors, (5736), 12 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:02,983 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 478.0) internal successors, (5736), 12 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:02,983 INFO L175 Difference]: Start difference. First operand has 396 places, 741 transitions, 14855 flow. Second operand 11 states and 2124 transitions. [2023-11-17 15:59:02,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 797 transitions, 17147 flow [2023-11-17 15:59:03,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 797 transitions, 16752 flow, removed 139 selfloop flow, removed 4 redundant places. [2023-11-17 15:59:03,504 INFO L231 Difference]: Finished difference. Result has 406 places, 741 transitions, 14824 flow [2023-11-17 15:59:03,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=14520, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14824, PETRI_PLACES=406, PETRI_TRANSITIONS=741} [2023-11-17 15:59:03,505 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 386 predicate places. [2023-11-17 15:59:03,505 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 741 transitions, 14824 flow [2023-11-17 15:59:03,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 188.38888888888889) internal successors, (3391), 18 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:03,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:03,505 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:03,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-11-17 15:59:03,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-11-17 15:59:03,706 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:03,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:03,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1320861353, now seen corresponding path program 44 times [2023-11-17 15:59:03,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:03,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056986897] [2023-11-17 15:59:03,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:03,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:03,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:03,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056986897] [2023-11-17 15:59:03,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056986897] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:03,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919430966] [2023-11-17 15:59:03,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:59:03,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:03,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:03,881 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:03,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-17 15:59:03,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:59:03,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:03,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:59:03,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:04,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:04,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:04,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919430966] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:04,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:04,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 15:59:04,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419253259] [2023-11-17 15:59:04,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:04,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 15:59:04,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:04,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 15:59:04,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:59:04,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:59:04,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 741 transitions, 14824 flow. Second operand has 16 states, 16 states have (on average 188.625) internal successors, (3018), 16 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:04,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:04,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:59:04,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:05,267 INFO L124 PetriNetUnfolderBase]: 1492/2532 cut-off events. [2023-11-17 15:59:05,267 INFO L125 PetriNetUnfolderBase]: For 69818/69818 co-relation queries the response was YES. [2023-11-17 15:59:05,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24692 conditions, 2532 events. 1492/2532 cut-off events. For 69818/69818 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 14701 event pairs, 65 based on Foata normal form. 1/2533 useless extension candidates. Maximal degree in co-relation 24529. Up to 2276 conditions per place. [2023-11-17 15:59:05,300 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 690 selfloop transitions, 93 changer transitions 5/788 dead transitions. [2023-11-17 15:59:05,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 788 transitions, 16883 flow [2023-11-17 15:59:05,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:59:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:59:05,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2117 transitions. [2023-11-17 15:59:05,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.402624572080639 [2023-11-17 15:59:05,302 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2117 transitions. [2023-11-17 15:59:05,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2117 transitions. [2023-11-17 15:59:05,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:05,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2117 transitions. [2023-11-17 15:59:05,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 192.45454545454547) internal successors, (2117), 11 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:05,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 478.0) internal successors, (5736), 12 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:05,306 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 478.0) internal successors, (5736), 12 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:05,306 INFO L175 Difference]: Start difference. First operand has 406 places, 741 transitions, 14824 flow. Second operand 11 states and 2117 transitions. [2023-11-17 15:59:05,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 788 transitions, 16883 flow [2023-11-17 15:59:05,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 788 transitions, 16496 flow, removed 101 selfloop flow, removed 7 redundant places. [2023-11-17 15:59:05,789 INFO L231 Difference]: Finished difference. Result has 409 places, 750 transitions, 14925 flow [2023-11-17 15:59:05,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=14487, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14925, PETRI_PLACES=409, PETRI_TRANSITIONS=750} [2023-11-17 15:59:05,790 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 389 predicate places. [2023-11-17 15:59:05,790 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 750 transitions, 14925 flow [2023-11-17 15:59:05,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 188.625) internal successors, (3018), 16 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:05,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:05,791 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:05,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:05,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-11-17 15:59:05,993 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:05,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:05,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1093875617, now seen corresponding path program 45 times [2023-11-17 15:59:05,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:05,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982623814] [2023-11-17 15:59:05,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:05,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:06,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:06,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982623814] [2023-11-17 15:59:06,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982623814] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:06,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489124232] [2023-11-17 15:59:06,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:59:06,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:06,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:06,172 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:06,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-17 15:59:06,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 15:59:06,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:06,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:59:06,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:06,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:06,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489124232] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:06,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:06,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 15 [2023-11-17 15:59:06,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823941595] [2023-11-17 15:59:06,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:06,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 15:59:06,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:06,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 15:59:06,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:59:06,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:59:06,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 750 transitions, 14925 flow. Second operand has 17 states, 17 states have (on average 188.47058823529412) internal successors, (3204), 17 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:06,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:06,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:59:06,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:07,537 INFO L124 PetriNetUnfolderBase]: 1537/2621 cut-off events. [2023-11-17 15:59:07,537 INFO L125 PetriNetUnfolderBase]: For 74913/74913 co-relation queries the response was YES. [2023-11-17 15:59:07,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25522 conditions, 2621 events. 1537/2621 cut-off events. For 74913/74913 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 15443 event pairs, 63 based on Foata normal form. 1/2622 useless extension candidates. Maximal degree in co-relation 25358. Up to 2392 conditions per place. [2023-11-17 15:59:07,578 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 719 selfloop transitions, 75 changer transitions 5/799 dead transitions. [2023-11-17 15:59:07,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 799 transitions, 17190 flow [2023-11-17 15:59:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:59:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:59:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1734 transitions. [2023-11-17 15:59:07,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403068340306834 [2023-11-17 15:59:07,579 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1734 transitions. [2023-11-17 15:59:07,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1734 transitions. [2023-11-17 15:59:07,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:07,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1734 transitions. [2023-11-17 15:59:07,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 192.66666666666666) internal successors, (1734), 9 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:07,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 478.0) internal successors, (4780), 10 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:07,583 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 478.0) internal successors, (4780), 10 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:07,583 INFO L175 Difference]: Start difference. First operand has 409 places, 750 transitions, 14925 flow. Second operand 9 states and 1734 transitions. [2023-11-17 15:59:07,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 799 transitions, 17190 flow [2023-11-17 15:59:08,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 799 transitions, 16931 flow, removed 59 selfloop flow, removed 7 redundant places. [2023-11-17 15:59:08,071 INFO L231 Difference]: Finished difference. Result has 413 places, 770 transitions, 15401 flow [2023-11-17 15:59:08,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=14670, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15401, PETRI_PLACES=413, PETRI_TRANSITIONS=770} [2023-11-17 15:59:08,072 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 393 predicate places. [2023-11-17 15:59:08,072 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 770 transitions, 15401 flow [2023-11-17 15:59:08,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 188.47058823529412) internal successors, (3204), 17 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:08,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:08,073 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:08,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:08,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-11-17 15:59:08,273 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:08,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:08,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1549205417, now seen corresponding path program 46 times [2023-11-17 15:59:08,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:08,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565586409] [2023-11-17 15:59:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:08,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:08,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:08,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565586409] [2023-11-17 15:59:08,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565586409] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:08,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24697519] [2023-11-17 15:59:08,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:59:08,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:08,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:08,411 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:08,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-17 15:59:08,510 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:59:08,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:08,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:59:08,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:08,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:08,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24697519] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:08,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:08,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 16 [2023-11-17 15:59:08,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17195890] [2023-11-17 15:59:08,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:08,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 15:59:08,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:08,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 15:59:08,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:59:08,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:59:08,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 770 transitions, 15401 flow. Second operand has 18 states, 18 states have (on average 188.55555555555554) internal successors, (3394), 18 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:08,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:08,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:59:08,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:09,799 INFO L124 PetriNetUnfolderBase]: 1589/2707 cut-off events. [2023-11-17 15:59:09,800 INFO L125 PetriNetUnfolderBase]: For 79856/79856 co-relation queries the response was YES. [2023-11-17 15:59:09,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26478 conditions, 2707 events. 1589/2707 cut-off events. For 79856/79856 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 15986 event pairs, 68 based on Foata normal form. 1/2708 useless extension candidates. Maximal degree in co-relation 26311. Up to 2401 conditions per place. [2023-11-17 15:59:09,842 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 729 selfloop transitions, 95 changer transitions 7/831 dead transitions. [2023-11-17 15:59:09,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 831 transitions, 17944 flow [2023-11-17 15:59:09,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:59:09,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:59:09,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1553 transitions. [2023-11-17 15:59:09,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061192468619247 [2023-11-17 15:59:09,844 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1553 transitions. [2023-11-17 15:59:09,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1553 transitions. [2023-11-17 15:59:09,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:09,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1553 transitions. [2023-11-17 15:59:09,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 194.125) internal successors, (1553), 8 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:09,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 478.0) internal successors, (4302), 9 states have internal predecessors, (4302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:09,847 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 478.0) internal successors, (4302), 9 states have internal predecessors, (4302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:09,847 INFO L175 Difference]: Start difference. First operand has 413 places, 770 transitions, 15401 flow. Second operand 8 states and 1553 transitions. [2023-11-17 15:59:09,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 831 transitions, 17944 flow [2023-11-17 15:59:10,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 831 transitions, 17608 flow, removed 120 selfloop flow, removed 5 redundant places. [2023-11-17 15:59:10,395 INFO L231 Difference]: Finished difference. Result has 417 places, 792 transitions, 15877 flow [2023-11-17 15:59:10,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=15071, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15877, PETRI_PLACES=417, PETRI_TRANSITIONS=792} [2023-11-17 15:59:10,396 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 397 predicate places. [2023-11-17 15:59:10,396 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 792 transitions, 15877 flow [2023-11-17 15:59:10,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 188.55555555555554) internal successors, (3394), 18 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:10,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:10,397 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:10,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-17 15:59:10,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-11-17 15:59:10,602 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:10,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:10,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1407592457, now seen corresponding path program 47 times [2023-11-17 15:59:10,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:10,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678519317] [2023-11-17 15:59:10,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:10,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:10,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:10,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678519317] [2023-11-17 15:59:10,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678519317] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:10,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935068326] [2023-11-17 15:59:10,745 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:59:10,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:10,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:10,746 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:10,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-17 15:59:10,842 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 15:59:10,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:10,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:59:10,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:10,944 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:10,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:11,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935068326] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:11,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:11,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 17 [2023-11-17 15:59:11,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415154743] [2023-11-17 15:59:11,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:11,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 15:59:11,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:11,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 15:59:11,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-11-17 15:59:11,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-11-17 15:59:11,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 792 transitions, 15877 flow. Second operand has 19 states, 19 states have (on average 188.31578947368422) internal successors, (3578), 19 states have internal predecessors, (3578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:11,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:11,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-11-17 15:59:11,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:12,122 INFO L124 PetriNetUnfolderBase]: 1584/2696 cut-off events. [2023-11-17 15:59:12,122 INFO L125 PetriNetUnfolderBase]: For 79473/79473 co-relation queries the response was YES. [2023-11-17 15:59:12,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26191 conditions, 2696 events. 1584/2696 cut-off events. For 79473/79473 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 15933 event pairs, 67 based on Foata normal form. 1/2697 useless extension candidates. Maximal degree in co-relation 26022. Up to 2401 conditions per place. [2023-11-17 15:59:12,169 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 727 selfloop transitions, 91 changer transitions 9/827 dead transitions. [2023-11-17 15:59:12,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 827 transitions, 17794 flow [2023-11-17 15:59:12,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:59:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:59:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1739 transitions. [2023-11-17 15:59:12,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40423059042305903 [2023-11-17 15:59:12,171 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1739 transitions. [2023-11-17 15:59:12,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1739 transitions. [2023-11-17 15:59:12,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:12,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1739 transitions. [2023-11-17 15:59:12,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 193.22222222222223) internal successors, (1739), 9 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:12,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 478.0) internal successors, (4780), 10 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:12,174 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 478.0) internal successors, (4780), 10 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:12,175 INFO L175 Difference]: Start difference. First operand has 417 places, 792 transitions, 15877 flow. Second operand 9 states and 1739 transitions. [2023-11-17 15:59:12,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 827 transitions, 17794 flow [2023-11-17 15:59:12,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 827 transitions, 17504 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-11-17 15:59:12,729 INFO L231 Difference]: Finished difference. Result has 421 places, 792 transitions, 15836 flow [2023-11-17 15:59:12,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=15591, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15836, PETRI_PLACES=421, PETRI_TRANSITIONS=792} [2023-11-17 15:59:12,730 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 401 predicate places. [2023-11-17 15:59:12,730 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 792 transitions, 15836 flow [2023-11-17 15:59:12,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 188.31578947368422) internal successors, (3578), 19 states have internal predecessors, (3578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:12,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:12,731 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:12,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-17 15:59:12,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:12,932 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:12,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:12,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1504251857, now seen corresponding path program 48 times [2023-11-17 15:59:12,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:12,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619916520] [2023-11-17 15:59:12,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:12,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:13,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:13,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619916520] [2023-11-17 15:59:13,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619916520] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:13,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759924680] [2023-11-17 15:59:13,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:59:13,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:13,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:13,021 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:13,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-17 15:59:13,123 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 15:59:13,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:13,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:59:13,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:13,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:13,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:13,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759924680] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:13,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:13,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-11-17 15:59:13,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446573937] [2023-11-17 15:59:13,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:13,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 15:59:13,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:13,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 15:59:13,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-11-17 15:59:13,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:59:13,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 792 transitions, 15836 flow. Second operand has 14 states, 14 states have (on average 198.07142857142858) internal successors, (2773), 14 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:13,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:13,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:59:13,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:14,397 INFO L124 PetriNetUnfolderBase]: 2092/3583 cut-off events. [2023-11-17 15:59:14,398 INFO L125 PetriNetUnfolderBase]: For 108291/108291 co-relation queries the response was YES. [2023-11-17 15:59:14,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34334 conditions, 3583 events. 2092/3583 cut-off events. For 108291/108291 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 22243 event pairs, 131 based on Foata normal form. 14/3597 useless extension candidates. Maximal degree in co-relation 34164. Up to 1057 conditions per place. [2023-11-17 15:59:14,567 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 665 selfloop transitions, 427 changer transitions 0/1092 dead transitions. [2023-11-17 15:59:14,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 1092 transitions, 23664 flow [2023-11-17 15:59:14,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:59:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:59:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2627 transitions. [2023-11-17 15:59:14,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42275506919858385 [2023-11-17 15:59:14,571 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2627 transitions. [2023-11-17 15:59:14,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2627 transitions. [2023-11-17 15:59:14,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:14,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2627 transitions. [2023-11-17 15:59:14,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 202.07692307692307) internal successors, (2627), 13 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:14,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 478.0) internal successors, (6692), 14 states have internal predecessors, (6692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:14,577 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 478.0) internal successors, (6692), 14 states have internal predecessors, (6692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:14,577 INFO L175 Difference]: Start difference. First operand has 421 places, 792 transitions, 15836 flow. Second operand 13 states and 2627 transitions. [2023-11-17 15:59:14,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 1092 transitions, 23664 flow [2023-11-17 15:59:15,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 1092 transitions, 23451 flow, removed 33 selfloop flow, removed 6 redundant places. [2023-11-17 15:59:15,400 INFO L231 Difference]: Finished difference. Result has 435 places, 947 transitions, 20643 flow [2023-11-17 15:59:15,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=15687, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20643, PETRI_PLACES=435, PETRI_TRANSITIONS=947} [2023-11-17 15:59:15,401 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 415 predicate places. [2023-11-17 15:59:15,401 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 947 transitions, 20643 flow [2023-11-17 15:59:15,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 198.07142857142858) internal successors, (2773), 14 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:15,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:15,402 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:15,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-11-17 15:59:15,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:15,602 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:15,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:15,603 INFO L85 PathProgramCache]: Analyzing trace with hash -762679549, now seen corresponding path program 49 times [2023-11-17 15:59:15,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:15,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590580354] [2023-11-17 15:59:15,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:15,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:15,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:15,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590580354] [2023-11-17 15:59:15,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590580354] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:15,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968938324] [2023-11-17 15:59:15,676 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:59:15,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:15,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:15,681 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:15,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-17 15:59:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:15,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:59:15,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:15,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:15,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968938324] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:15,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:15,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-11-17 15:59:15,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79564211] [2023-11-17 15:59:15,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:15,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 15:59:15,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:15,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 15:59:15,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-17 15:59:15,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:59:15,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 947 transitions, 20643 flow. Second operand has 14 states, 14 states have (on average 198.07142857142858) internal successors, (2773), 14 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:15,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:15,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:59:15,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:17,369 INFO L124 PetriNetUnfolderBase]: 2097/3600 cut-off events. [2023-11-17 15:59:17,369 INFO L125 PetriNetUnfolderBase]: For 120033/120033 co-relation queries the response was YES. [2023-11-17 15:59:17,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36216 conditions, 3600 events. 2097/3600 cut-off events. For 120033/120033 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 22477 event pairs, 403 based on Foata normal form. 4/3604 useless extension candidates. Maximal degree in co-relation 36039. Up to 2289 conditions per place. [2023-11-17 15:59:17,425 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 813 selfloop transitions, 244 changer transitions 15/1072 dead transitions. [2023-11-17 15:59:17,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 1072 transitions, 24878 flow [2023-11-17 15:59:17,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:59:17,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:59:17,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1823 transitions. [2023-11-17 15:59:17,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237563923756392 [2023-11-17 15:59:17,426 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1823 transitions. [2023-11-17 15:59:17,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1823 transitions. [2023-11-17 15:59:17,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:17,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1823 transitions. [2023-11-17 15:59:17,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 202.55555555555554) internal successors, (1823), 9 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:17,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 478.0) internal successors, (4780), 10 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:17,430 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 478.0) internal successors, (4780), 10 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:17,430 INFO L175 Difference]: Start difference. First operand has 435 places, 947 transitions, 20643 flow. Second operand 9 states and 1823 transitions. [2023-11-17 15:59:17,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 1072 transitions, 24878 flow [2023-11-17 15:59:18,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1072 transitions, 24478 flow, removed 110 selfloop flow, removed 3 redundant places. [2023-11-17 15:59:18,389 INFO L231 Difference]: Finished difference. Result has 443 places, 945 transitions, 20687 flow [2023-11-17 15:59:18,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=20243, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=947, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=703, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20687, PETRI_PLACES=443, PETRI_TRANSITIONS=945} [2023-11-17 15:59:18,390 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 423 predicate places. [2023-11-17 15:59:18,390 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 945 transitions, 20687 flow [2023-11-17 15:59:18,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 198.07142857142858) internal successors, (2773), 14 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:18,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:18,391 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:18,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:18,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:18,597 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:18,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:18,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1200235615, now seen corresponding path program 50 times [2023-11-17 15:59:18,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:18,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047251217] [2023-11-17 15:59:18,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:18,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:18,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:18,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047251217] [2023-11-17 15:59:18,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047251217] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:18,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292643668] [2023-11-17 15:59:18,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:59:18,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:18,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:18,679 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:18,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-11-17 15:59:18,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:59:18,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:18,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:59:18,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:18,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:18,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:18,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292643668] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:18,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:18,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-11-17 15:59:18,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147472464] [2023-11-17 15:59:18,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:18,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:59:18,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:18,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:59:18,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:59:18,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:59:18,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 945 transitions, 20687 flow. Second operand has 15 states, 15 states have (on average 197.93333333333334) internal successors, (2969), 15 states have internal predecessors, (2969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:18,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:18,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:59:18,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:20,689 INFO L124 PetriNetUnfolderBase]: 2270/3867 cut-off events. [2023-11-17 15:59:20,690 INFO L125 PetriNetUnfolderBase]: For 147671/147671 co-relation queries the response was YES. [2023-11-17 15:59:20,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39796 conditions, 3867 events. 2270/3867 cut-off events. For 147671/147671 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 24340 event pairs, 180 based on Foata normal form. 28/3895 useless extension candidates. Maximal degree in co-relation 39616. Up to 1356 conditions per place. [2023-11-17 15:59:20,750 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 551 selfloop transitions, 531 changer transitions 0/1082 dead transitions. [2023-11-17 15:59:20,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 1082 transitions, 25903 flow [2023-11-17 15:59:20,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 15:59:20,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 15:59:20,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4821 transitions. [2023-11-17 15:59:20,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4202405857740586 [2023-11-17 15:59:20,753 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4821 transitions. [2023-11-17 15:59:20,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4821 transitions. [2023-11-17 15:59:20,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:20,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4821 transitions. [2023-11-17 15:59:20,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 200.875) internal successors, (4821), 24 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:20,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 478.0) internal successors, (11950), 25 states have internal predecessors, (11950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:20,762 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 478.0) internal successors, (11950), 25 states have internal predecessors, (11950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:20,762 INFO L175 Difference]: Start difference. First operand has 443 places, 945 transitions, 20687 flow. Second operand 24 states and 4821 transitions. [2023-11-17 15:59:20,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 1082 transitions, 25903 flow [2023-11-17 15:59:21,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1082 transitions, 25514 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-17 15:59:21,717 INFO L231 Difference]: Finished difference. Result has 464 places, 1038 transitions, 24657 flow [2023-11-17 15:59:21,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=20325, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=453, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=24657, PETRI_PLACES=464, PETRI_TRANSITIONS=1038} [2023-11-17 15:59:21,718 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 444 predicate places. [2023-11-17 15:59:21,718 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 1038 transitions, 24657 flow [2023-11-17 15:59:21,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 197.93333333333334) internal successors, (2969), 15 states have internal predecessors, (2969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:21,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:21,719 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:21,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:21,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:21,925 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:21,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:21,925 INFO L85 PathProgramCache]: Analyzing trace with hash -423535009, now seen corresponding path program 51 times [2023-11-17 15:59:21,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:21,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843148231] [2023-11-17 15:59:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:21,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:21,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:21,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:21,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843148231] [2023-11-17 15:59:21,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843148231] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:21,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294754643] [2023-11-17 15:59:21,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:59:21,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:21,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:21,986 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:21,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-11-17 15:59:22,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-17 15:59:22,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:22,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:59:22,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:22,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:22,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294754643] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:22,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:22,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-11-17 15:59:22,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165584906] [2023-11-17 15:59:22,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:22,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:59:22,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:22,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:59:22,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:59:22,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:59:22,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 1038 transitions, 24657 flow. Second operand has 15 states, 15 states have (on average 197.8) internal successors, (2967), 15 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:22,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:22,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:59:22,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:23,994 INFO L124 PetriNetUnfolderBase]: 2268/3873 cut-off events. [2023-11-17 15:59:23,995 INFO L125 PetriNetUnfolderBase]: For 151207/151207 co-relation queries the response was YES. [2023-11-17 15:59:24,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41834 conditions, 3873 events. 2268/3873 cut-off events. For 151207/151207 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 24531 event pairs, 276 based on Foata normal form. 8/3881 useless extension candidates. Maximal degree in co-relation 41650. Up to 1708 conditions per place. [2023-11-17 15:59:24,063 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 607 selfloop transitions, 463 changer transitions 4/1074 dead transitions. [2023-11-17 15:59:24,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 1074 transitions, 27149 flow [2023-11-17 15:59:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 15:59:24,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 15:59:24,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3812 transitions. [2023-11-17 15:59:24,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41973133670997576 [2023-11-17 15:59:24,067 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3812 transitions. [2023-11-17 15:59:24,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3812 transitions. [2023-11-17 15:59:24,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:24,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3812 transitions. [2023-11-17 15:59:24,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 200.6315789473684) internal successors, (3812), 19 states have internal predecessors, (3812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:24,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 478.0) internal successors, (9560), 20 states have internal predecessors, (9560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:24,075 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 478.0) internal successors, (9560), 20 states have internal predecessors, (9560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:24,075 INFO L175 Difference]: Start difference. First operand has 464 places, 1038 transitions, 24657 flow. Second operand 19 states and 3812 transitions. [2023-11-17 15:59:24,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 1074 transitions, 27149 flow [2023-11-17 15:59:25,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1074 transitions, 25123 flow, removed 762 selfloop flow, removed 16 redundant places. [2023-11-17 15:59:25,230 INFO L231 Difference]: Finished difference. Result has 468 places, 1036 transitions, 23573 flow [2023-11-17 15:59:25,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=22632, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1038, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=462, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=23573, PETRI_PLACES=468, PETRI_TRANSITIONS=1036} [2023-11-17 15:59:25,231 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 448 predicate places. [2023-11-17 15:59:25,231 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 1036 transitions, 23573 flow [2023-11-17 15:59:25,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 197.8) internal successors, (2967), 15 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:25,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:25,232 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:25,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:25,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:25,432 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:25,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:25,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1243159971, now seen corresponding path program 52 times [2023-11-17 15:59:25,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:25,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95855020] [2023-11-17 15:59:25,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:25,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:25,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:25,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95855020] [2023-11-17 15:59:25,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95855020] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:25,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134594913] [2023-11-17 15:59:25,509 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:59:25,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:25,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:25,513 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:25,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-11-17 15:59:25,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:59:25,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:25,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:59:25,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:25,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:25,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134594913] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:25,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:25,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-17 15:59:25,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962154080] [2023-11-17 15:59:25,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:25,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 15:59:25,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:25,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 15:59:25,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:59:25,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:59:25,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1036 transitions, 23573 flow. Second operand has 16 states, 16 states have (on average 198.0) internal successors, (3168), 16 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:25,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:25,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:59:25,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:27,611 INFO L124 PetriNetUnfolderBase]: 2292/3925 cut-off events. [2023-11-17 15:59:27,611 INFO L125 PetriNetUnfolderBase]: For 139709/139709 co-relation queries the response was YES. [2023-11-17 15:59:27,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40640 conditions, 3925 events. 2292/3925 cut-off events. For 139709/139709 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 24938 event pairs, 452 based on Foata normal form. 16/3941 useless extension candidates. Maximal degree in co-relation 40460. Up to 2840 conditions per place. [2023-11-17 15:59:27,670 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 845 selfloop transitions, 299 changer transitions 12/1156 dead transitions. [2023-11-17 15:59:27,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 1156 transitions, 28264 flow [2023-11-17 15:59:27,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:59:27,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:59:27,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3019 transitions. [2023-11-17 15:59:27,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4210599721059972 [2023-11-17 15:59:27,673 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3019 transitions. [2023-11-17 15:59:27,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3019 transitions. [2023-11-17 15:59:27,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:27,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3019 transitions. [2023-11-17 15:59:27,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 201.26666666666668) internal successors, (3019), 15 states have internal predecessors, (3019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:27,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 478.0) internal successors, (7648), 16 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:27,678 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 478.0) internal successors, (7648), 16 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:27,678 INFO L175 Difference]: Start difference. First operand has 468 places, 1036 transitions, 23573 flow. Second operand 15 states and 3019 transitions. [2023-11-17 15:59:27,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 1156 transitions, 28264 flow [2023-11-17 15:59:28,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 1156 transitions, 27295 flow, removed 28 selfloop flow, removed 17 redundant places. [2023-11-17 15:59:28,707 INFO L231 Difference]: Finished difference. Result has 468 places, 1061 transitions, 24335 flow [2023-11-17 15:59:28,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=22610, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1036, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=744, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=24335, PETRI_PLACES=468, PETRI_TRANSITIONS=1061} [2023-11-17 15:59:28,708 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 448 predicate places. [2023-11-17 15:59:28,709 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 1061 transitions, 24335 flow [2023-11-17 15:59:28,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 198.0) internal successors, (3168), 16 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:28,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:28,709 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:28,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:28,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-11-17 15:59:28,915 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:28,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:28,916 INFO L85 PathProgramCache]: Analyzing trace with hash -192443975, now seen corresponding path program 53 times [2023-11-17 15:59:28,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:28,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230712597] [2023-11-17 15:59:28,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:28,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:28,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:28,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:28,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230712597] [2023-11-17 15:59:28,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230712597] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:28,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759582550] [2023-11-17 15:59:28,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:59:28,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:28,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:28,980 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:28,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-11-17 15:59:29,079 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 15:59:29,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:29,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:59:29,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:29,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:29,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:29,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:29,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759582550] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:29,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:29,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-17 15:59:29,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845716404] [2023-11-17 15:59:29,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:29,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 15:59:29,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:29,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 15:59:29,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:59:29,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:59:29,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1061 transitions, 24335 flow. Second operand has 16 states, 16 states have (on average 198.0625) internal successors, (3169), 16 states have internal predecessors, (3169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:29,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:29,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:59:29,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:31,084 INFO L124 PetriNetUnfolderBase]: 2334/3993 cut-off events. [2023-11-17 15:59:31,084 INFO L125 PetriNetUnfolderBase]: For 147240/147240 co-relation queries the response was YES. [2023-11-17 15:59:31,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41317 conditions, 3993 events. 2334/3993 cut-off events. For 147240/147240 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 25427 event pairs, 236 based on Foata normal form. 12/4005 useless extension candidates. Maximal degree in co-relation 41134. Up to 1638 conditions per place. [2023-11-17 15:59:31,145 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 732 selfloop transitions, 405 changer transitions 0/1137 dead transitions. [2023-11-17 15:59:31,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 1137 transitions, 27563 flow [2023-11-17 15:59:31,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 15:59:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 15:59:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3818 transitions. [2023-11-17 15:59:31,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42039198414446155 [2023-11-17 15:59:31,148 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3818 transitions. [2023-11-17 15:59:31,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3818 transitions. [2023-11-17 15:59:31,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:31,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3818 transitions. [2023-11-17 15:59:31,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 200.94736842105263) internal successors, (3818), 19 states have internal predecessors, (3818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:31,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 478.0) internal successors, (9560), 20 states have internal predecessors, (9560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:31,154 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 478.0) internal successors, (9560), 20 states have internal predecessors, (9560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:31,154 INFO L175 Difference]: Start difference. First operand has 468 places, 1061 transitions, 24335 flow. Second operand 19 states and 3818 transitions. [2023-11-17 15:59:31,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 1137 transitions, 27563 flow [2023-11-17 15:59:32,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1137 transitions, 26196 flow, removed 263 selfloop flow, removed 9 redundant places. [2023-11-17 15:59:32,272 INFO L231 Difference]: Finished difference. Result has 481 places, 1087 transitions, 24504 flow [2023-11-17 15:59:32,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=22975, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1061, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=380, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=24504, PETRI_PLACES=481, PETRI_TRANSITIONS=1087} [2023-11-17 15:59:32,273 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 461 predicate places. [2023-11-17 15:59:32,274 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 1087 transitions, 24504 flow [2023-11-17 15:59:32,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 198.0625) internal successors, (3169), 16 states have internal predecessors, (3169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:32,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:32,274 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:32,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:32,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2023-11-17 15:59:32,480 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:32,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:32,480 INFO L85 PathProgramCache]: Analyzing trace with hash 562386519, now seen corresponding path program 54 times [2023-11-17 15:59:32,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:32,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338889488] [2023-11-17 15:59:32,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:32,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:32,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:32,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:32,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338889488] [2023-11-17 15:59:32,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338889488] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:32,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861430495] [2023-11-17 15:59:32,534 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:59:32,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:32,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:32,536 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:32,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-11-17 15:59:32,637 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 15:59:32,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:32,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:59:32,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:32,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:32,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:32,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861430495] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:32,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:32,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-11-17 15:59:32,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638433324] [2023-11-17 15:59:32,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:32,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:59:32,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:32,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:59:32,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:59:32,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:59:32,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 1087 transitions, 24504 flow. Second operand has 15 states, 15 states have (on average 198.06666666666666) internal successors, (2971), 15 states have internal predecessors, (2971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:32,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:32,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:59:32,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:34,636 INFO L124 PetriNetUnfolderBase]: 2429/4168 cut-off events. [2023-11-17 15:59:34,637 INFO L125 PetriNetUnfolderBase]: For 140505/140505 co-relation queries the response was YES. [2023-11-17 15:59:34,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42690 conditions, 4168 events. 2429/4168 cut-off events. For 140505/140505 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 26797 event pairs, 217 based on Foata normal form. 14/4182 useless extension candidates. Maximal degree in co-relation 42502. Up to 1536 conditions per place. [2023-11-17 15:59:34,702 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 684 selfloop transitions, 488 changer transitions 0/1172 dead transitions. [2023-11-17 15:59:34,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 1172 transitions, 28120 flow [2023-11-17 15:59:34,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 15:59:34,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 15:59:34,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4217 transitions. [2023-11-17 15:59:34,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201036062960749 [2023-11-17 15:59:34,704 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4217 transitions. [2023-11-17 15:59:34,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4217 transitions. [2023-11-17 15:59:34,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:34,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4217 transitions. [2023-11-17 15:59:34,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 200.8095238095238) internal successors, (4217), 21 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:34,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 478.0) internal successors, (10516), 22 states have internal predecessors, (10516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:34,711 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 478.0) internal successors, (10516), 22 states have internal predecessors, (10516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:34,711 INFO L175 Difference]: Start difference. First operand has 481 places, 1087 transitions, 24504 flow. Second operand 21 states and 4217 transitions. [2023-11-17 15:59:34,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 1172 transitions, 28120 flow [2023-11-17 15:59:35,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 1172 transitions, 27635 flow, removed 148 selfloop flow, removed 7 redundant places. [2023-11-17 15:59:35,790 INFO L231 Difference]: Finished difference. Result has 499 places, 1126 transitions, 26232 flow [2023-11-17 15:59:35,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=24111, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1087, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=450, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=26232, PETRI_PLACES=499, PETRI_TRANSITIONS=1126} [2023-11-17 15:59:35,792 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 479 predicate places. [2023-11-17 15:59:35,792 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 1126 transitions, 26232 flow [2023-11-17 15:59:35,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 198.06666666666666) internal successors, (2971), 15 states have internal predecessors, (2971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:35,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:35,792 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:35,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2023-11-17 15:59:35,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-11-17 15:59:35,993 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:35,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:35,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1210387463, now seen corresponding path program 55 times [2023-11-17 15:59:35,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:35,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513422016] [2023-11-17 15:59:35,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:35,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:36,124 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:36,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:36,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513422016] [2023-11-17 15:59:36,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513422016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:36,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317093368] [2023-11-17 15:59:36,124 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:59:36,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:36,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:36,126 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:36,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-11-17 15:59:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:36,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:59:36,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:36,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:36,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317093368] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:36,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:36,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-11-17 15:59:36,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419898385] [2023-11-17 15:59:36,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:36,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:59:36,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:36,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:59:36,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:59:36,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:59:36,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 1126 transitions, 26232 flow. Second operand has 15 states, 15 states have (on average 198.0) internal successors, (2970), 15 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:36,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:36,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:59:36,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:38,387 INFO L124 PetriNetUnfolderBase]: 2604/4413 cut-off events. [2023-11-17 15:59:38,387 INFO L125 PetriNetUnfolderBase]: For 166326/166326 co-relation queries the response was YES. [2023-11-17 15:59:38,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47596 conditions, 4413 events. 2604/4413 cut-off events. For 166326/166326 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 28267 event pairs, 484 based on Foata normal form. 28/4441 useless extension candidates. Maximal degree in co-relation 47402. Up to 3064 conditions per place. [2023-11-17 15:59:38,462 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 870 selfloop transitions, 425 changer transitions 15/1310 dead transitions. [2023-11-17 15:59:38,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 1310 transitions, 32927 flow [2023-11-17 15:59:38,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 15:59:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 15:59:38,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3421 transitions. [2023-11-17 15:59:38,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42099433915825746 [2023-11-17 15:59:38,464 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3421 transitions. [2023-11-17 15:59:38,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3421 transitions. [2023-11-17 15:59:38,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:38,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3421 transitions. [2023-11-17 15:59:38,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 201.23529411764707) internal successors, (3421), 17 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:38,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:38,470 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:38,470 INFO L175 Difference]: Start difference. First operand has 499 places, 1126 transitions, 26232 flow. Second operand 17 states and 3421 transitions. [2023-11-17 15:59:38,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 1310 transitions, 32927 flow [2023-11-17 15:59:39,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 1310 transitions, 32470 flow, removed 111 selfloop flow, removed 11 redundant places. [2023-11-17 15:59:39,739 INFO L231 Difference]: Finished difference. Result has 507 places, 1197 transitions, 29250 flow [2023-11-17 15:59:39,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=25716, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=29250, PETRI_PLACES=507, PETRI_TRANSITIONS=1197} [2023-11-17 15:59:39,740 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 487 predicate places. [2023-11-17 15:59:39,740 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 1197 transitions, 29250 flow [2023-11-17 15:59:39,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 198.0) internal successors, (2970), 15 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:39,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:39,740 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:39,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2023-11-17 15:59:39,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:39,942 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:39,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:39,942 INFO L85 PathProgramCache]: Analyzing trace with hash 545693603, now seen corresponding path program 56 times [2023-11-17 15:59:39,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:39,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915712746] [2023-11-17 15:59:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:39,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:40,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:40,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915712746] [2023-11-17 15:59:40,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915712746] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:40,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000308655] [2023-11-17 15:59:40,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:59:40,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:40,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:40,088 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:40,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-11-17 15:59:40,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:59:40,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:40,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:59:40,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:40,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:40,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000308655] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:40,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:40,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-11-17 15:59:40,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891603096] [2023-11-17 15:59:40,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:40,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:59:40,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:40,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:59:40,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:59:40,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:59:40,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 1197 transitions, 29250 flow. Second operand has 15 states, 15 states have (on average 197.8) internal successors, (2967), 15 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:40,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:40,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:59:40,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:42,324 INFO L124 PetriNetUnfolderBase]: 2686/4503 cut-off events. [2023-11-17 15:59:42,324 INFO L125 PetriNetUnfolderBase]: For 196553/196553 co-relation queries the response was YES. [2023-11-17 15:59:42,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50831 conditions, 4503 events. 2686/4503 cut-off events. For 196553/196553 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 28340 event pairs, 488 based on Foata normal form. 44/4547 useless extension candidates. Maximal degree in co-relation 50634. Up to 3138 conditions per place. [2023-11-17 15:59:42,494 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 837 selfloop transitions, 515 changer transitions 9/1361 dead transitions. [2023-11-17 15:59:42,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 1361 transitions, 35881 flow [2023-11-17 15:59:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 15:59:42,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 15:59:42,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3817 transitions. [2023-11-17 15:59:42,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42028187623871394 [2023-11-17 15:59:42,496 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3817 transitions. [2023-11-17 15:59:42,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3817 transitions. [2023-11-17 15:59:42,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:42,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3817 transitions. [2023-11-17 15:59:42,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 200.89473684210526) internal successors, (3817), 19 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:42,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 478.0) internal successors, (9560), 20 states have internal predecessors, (9560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:42,503 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 478.0) internal successors, (9560), 20 states have internal predecessors, (9560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:42,503 INFO L175 Difference]: Start difference. First operand has 507 places, 1197 transitions, 29250 flow. Second operand 19 states and 3817 transitions. [2023-11-17 15:59:42,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 1361 transitions, 35881 flow [2023-11-17 15:59:44,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 1361 transitions, 34570 flow, removed 447 selfloop flow, removed 11 redundant places. [2023-11-17 15:59:44,076 INFO L231 Difference]: Finished difference. Result has 516 places, 1265 transitions, 31844 flow [2023-11-17 15:59:44,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=27909, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=431, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=31844, PETRI_PLACES=516, PETRI_TRANSITIONS=1265} [2023-11-17 15:59:44,077 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 496 predicate places. [2023-11-17 15:59:44,077 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 1265 transitions, 31844 flow [2023-11-17 15:59:44,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 197.8) internal successors, (2967), 15 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:44,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:44,078 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:44,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2023-11-17 15:59:44,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-11-17 15:59:44,279 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:44,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:44,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2016664573, now seen corresponding path program 57 times [2023-11-17 15:59:44,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:44,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239743929] [2023-11-17 15:59:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:44,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:44,390 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:44,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:44,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239743929] [2023-11-17 15:59:44,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239743929] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:44,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442278126] [2023-11-17 15:59:44,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:59:44,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:44,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:44,392 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:44,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-11-17 15:59:44,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 15:59:44,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:44,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:59:44,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:44,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:44,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442278126] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:44,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:44,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-11-17 15:59:44,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395263645] [2023-11-17 15:59:44,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:44,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:59:44,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:44,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:59:44,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:59:44,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:59:44,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 1265 transitions, 31844 flow. Second operand has 15 states, 15 states have (on average 197.8) internal successors, (2967), 15 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:44,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:44,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:59:44,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:46,709 INFO L124 PetriNetUnfolderBase]: 2664/4443 cut-off events. [2023-11-17 15:59:46,709 INFO L125 PetriNetUnfolderBase]: For 179651/179651 co-relation queries the response was YES. [2023-11-17 15:59:46,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50548 conditions, 4443 events. 2664/4443 cut-off events. For 179651/179651 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 27641 event pairs, 488 based on Foata normal form. 26/4469 useless extension candidates. Maximal degree in co-relation 50348. Up to 3148 conditions per place. [2023-11-17 15:59:46,788 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 817 selfloop transitions, 538 changer transitions 1/1356 dead transitions. [2023-11-17 15:59:46,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 1356 transitions, 35976 flow [2023-11-17 15:59:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-17 15:59:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-17 15:59:46,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 5606 transitions. [2023-11-17 15:59:46,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188583383144053 [2023-11-17 15:59:46,791 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 5606 transitions. [2023-11-17 15:59:46,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 5606 transitions. [2023-11-17 15:59:46,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:46,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 5606 transitions. [2023-11-17 15:59:46,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 200.21428571428572) internal successors, (5606), 28 states have internal predecessors, (5606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:46,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 478.0) internal successors, (13862), 29 states have internal predecessors, (13862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:46,802 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 478.0) internal successors, (13862), 29 states have internal predecessors, (13862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:46,802 INFO L175 Difference]: Start difference. First operand has 516 places, 1265 transitions, 31844 flow. Second operand 28 states and 5606 transitions. [2023-11-17 15:59:46,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 1356 transitions, 35976 flow [2023-11-17 15:59:48,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 1356 transitions, 34450 flow, removed 538 selfloop flow, removed 13 redundant places. [2023-11-17 15:59:48,526 INFO L231 Difference]: Finished difference. Result has 532 places, 1274 transitions, 31791 flow [2023-11-17 15:59:48,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=30097, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=518, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=726, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=31791, PETRI_PLACES=532, PETRI_TRANSITIONS=1274} [2023-11-17 15:59:48,528 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 512 predicate places. [2023-11-17 15:59:48,528 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 1274 transitions, 31791 flow [2023-11-17 15:59:48,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 197.8) internal successors, (2967), 15 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:48,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:48,529 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:48,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2023-11-17 15:59:48,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:48,734 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:48,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1735781055, now seen corresponding path program 58 times [2023-11-17 15:59:48,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:48,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260908181] [2023-11-17 15:59:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:48,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:59:48,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:48,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260908181] [2023-11-17 15:59:48,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260908181] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:48,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643670524] [2023-11-17 15:59:48,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:59:48,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:48,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:48,787 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:48,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-11-17 15:59:48,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:59:48,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:48,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:59:48,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:48,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:59:48,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643670524] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:48,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:48,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 15 [2023-11-17 15:59:48,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861918985] [2023-11-17 15:59:48,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:48,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:59:48,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:48,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:59:48,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:59:48,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:59:48,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 1274 transitions, 31791 flow. Second operand has 15 states, 15 states have (on average 197.86666666666667) internal successors, (2968), 15 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:48,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:48,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:59:48,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:51,388 INFO L124 PetriNetUnfolderBase]: 2975/4876 cut-off events. [2023-11-17 15:59:51,388 INFO L125 PetriNetUnfolderBase]: For 190925/190925 co-relation queries the response was YES. [2023-11-17 15:59:51,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57380 conditions, 4876 events. 2975/4876 cut-off events. For 190925/190925 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 30250 event pairs, 284 based on Foata normal form. 16/4892 useless extension candidates. Maximal degree in co-relation 57176. Up to 1960 conditions per place. [2023-11-17 15:59:51,479 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 718 selfloop transitions, 754 changer transitions 6/1478 dead transitions. [2023-11-17 15:59:51,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 1478 transitions, 41235 flow [2023-11-17 15:59:51,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 15:59:51,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 15:59:51,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4013 transitions. [2023-11-17 15:59:51,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41976987447698744 [2023-11-17 15:59:51,481 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4013 transitions. [2023-11-17 15:59:51,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4013 transitions. [2023-11-17 15:59:51,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:51,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4013 transitions. [2023-11-17 15:59:51,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 200.65) internal successors, (4013), 20 states have internal predecessors, (4013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:51,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 478.0) internal successors, (10038), 21 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:51,488 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 478.0) internal successors, (10038), 21 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:51,488 INFO L175 Difference]: Start difference. First operand has 532 places, 1274 transitions, 31791 flow. Second operand 20 states and 4013 transitions. [2023-11-17 15:59:51,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 1478 transitions, 41235 flow [2023-11-17 15:59:53,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 1478 transitions, 39715 flow, removed 283 selfloop flow, removed 16 redundant places. [2023-11-17 15:59:53,346 INFO L231 Difference]: Finished difference. Result has 539 places, 1428 transitions, 38089 flow [2023-11-17 15:59:53,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=30650, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=600, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=38089, PETRI_PLACES=539, PETRI_TRANSITIONS=1428} [2023-11-17 15:59:53,347 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 519 predicate places. [2023-11-17 15:59:53,347 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 1428 transitions, 38089 flow [2023-11-17 15:59:53,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 197.86666666666667) internal successors, (2968), 15 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:53,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:53,348 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:53,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2023-11-17 15:59:53,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:53,549 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:53,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:53,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1404048661, now seen corresponding path program 59 times [2023-11-17 15:59:53,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:53,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198697962] [2023-11-17 15:59:53,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:53,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:53,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:53,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198697962] [2023-11-17 15:59:53,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198697962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:53,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916930077] [2023-11-17 15:59:53,610 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:59:53,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:53,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:53,611 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:53,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-11-17 15:59:53,724 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 15:59:53,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:53,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:59:53,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:53,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:53,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:53,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916930077] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:53,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:53,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-17 15:59:53,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652254904] [2023-11-17 15:59:53,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:53,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 15:59:53,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:53,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 15:59:53,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:59:53,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:59:53,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 1428 transitions, 38089 flow. Second operand has 16 states, 16 states have (on average 197.75) internal successors, (3164), 16 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:53,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:53,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:59:53,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:56,478 INFO L124 PetriNetUnfolderBase]: 3036/4967 cut-off events. [2023-11-17 15:59:56,478 INFO L125 PetriNetUnfolderBase]: For 216655/216655 co-relation queries the response was YES. [2023-11-17 15:59:56,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59849 conditions, 4967 events. 3036/4967 cut-off events. For 216655/216655 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 30914 event pairs, 286 based on Foata normal form. 6/4973 useless extension candidates. Maximal degree in co-relation 59642. Up to 1984 conditions per place. [2023-11-17 15:59:56,575 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 733 selfloop transitions, 772 changer transitions 8/1513 dead transitions. [2023-11-17 15:59:56,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 1513 transitions, 43563 flow [2023-11-17 15:59:56,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 15:59:56,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 15:59:56,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4209 transitions. [2023-11-17 15:59:56,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41930663478780633 [2023-11-17 15:59:56,578 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4209 transitions. [2023-11-17 15:59:56,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4209 transitions. [2023-11-17 15:59:56,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:56,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4209 transitions. [2023-11-17 15:59:56,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 200.42857142857142) internal successors, (4209), 21 states have internal predecessors, (4209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:56,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 478.0) internal successors, (10516), 22 states have internal predecessors, (10516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:56,585 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 478.0) internal successors, (10516), 22 states have internal predecessors, (10516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:56,585 INFO L175 Difference]: Start difference. First operand has 539 places, 1428 transitions, 38089 flow. Second operand 21 states and 4209 transitions. [2023-11-17 15:59:56,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 1513 transitions, 43563 flow [2023-11-17 15:59:58,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 1513 transitions, 41393 flow, removed 968 selfloop flow, removed 12 redundant places. [2023-11-17 15:59:58,994 INFO L231 Difference]: Finished difference. Result has 553 places, 1463 transitions, 39902 flow [2023-11-17 15:59:58,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=36589, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=730, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=39902, PETRI_PLACES=553, PETRI_TRANSITIONS=1463} [2023-11-17 15:59:58,995 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 533 predicate places. [2023-11-17 15:59:58,995 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 1463 transitions, 39902 flow [2023-11-17 15:59:58,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 197.75) internal successors, (3164), 16 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:58,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:58,995 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:59,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:59,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:59,196 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:59,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:59,196 INFO L85 PathProgramCache]: Analyzing trace with hash 2144363243, now seen corresponding path program 60 times [2023-11-17 15:59:59,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:59,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541969144] [2023-11-17 15:59:59,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:59,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:59,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:59,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541969144] [2023-11-17 15:59:59,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541969144] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:59,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867539901] [2023-11-17 15:59:59,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:59:59,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:59,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:59,277 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:59,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-11-17 15:59:59,412 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 15:59:59,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:59,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:59:59,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:59,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:59,558 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:59,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867539901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:59,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:59,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2023-11-17 15:59:59,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177418273] [2023-11-17 15:59:59,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:59,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:59:59,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:59,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:59:59,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:59:59,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 15:59:59,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 1463 transitions, 39902 flow. Second operand has 15 states, 15 states have (on average 198.13333333333333) internal successors, (2972), 15 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:59,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:59,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 15:59:59,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:02,509 INFO L124 PetriNetUnfolderBase]: 3190/5259 cut-off events. [2023-11-17 16:00:02,509 INFO L125 PetriNetUnfolderBase]: For 189588/189588 co-relation queries the response was YES. [2023-11-17 16:00:02,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62022 conditions, 5259 events. 3190/5259 cut-off events. For 189588/189588 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 33236 event pairs, 149 based on Foata normal form. 46/5305 useless extension candidates. Maximal degree in co-relation 61810. Up to 2169 conditions per place. [2023-11-17 16:00:02,606 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 838 selfloop transitions, 745 changer transitions 1/1584 dead transitions. [2023-11-17 16:00:02,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 1584 transitions, 44963 flow [2023-11-17 16:00:02,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 16:00:02,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 16:00:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5214 transitions. [2023-11-17 16:00:02,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195365304151915 [2023-11-17 16:00:02,609 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5214 transitions. [2023-11-17 16:00:02,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5214 transitions. [2023-11-17 16:00:02,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:02,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5214 transitions. [2023-11-17 16:00:02,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 200.53846153846155) internal successors, (5214), 26 states have internal predecessors, (5214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:02,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 478.0) internal successors, (12906), 27 states have internal predecessors, (12906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:02,619 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 478.0) internal successors, (12906), 27 states have internal predecessors, (12906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:02,619 INFO L175 Difference]: Start difference. First operand has 553 places, 1463 transitions, 39902 flow. Second operand 26 states and 5214 transitions. [2023-11-17 16:00:02,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 1584 transitions, 44963 flow [2023-11-17 16:00:04,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 1584 transitions, 44247 flow, removed 114 selfloop flow, removed 10 redundant places. [2023-11-17 16:00:04,881 INFO L231 Difference]: Finished difference. Result has 568 places, 1537 transitions, 42631 flow [2023-11-17 16:00:04,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=38866, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=668, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=778, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=42631, PETRI_PLACES=568, PETRI_TRANSITIONS=1537} [2023-11-17 16:00:04,882 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 548 predicate places. [2023-11-17 16:00:04,882 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 1537 transitions, 42631 flow [2023-11-17 16:00:04,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 198.13333333333333) internal successors, (2972), 15 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:04,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:04,883 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:04,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2023-11-17 16:00:05,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2023-11-17 16:00:05,084 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:05,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:05,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1944149887, now seen corresponding path program 61 times [2023-11-17 16:00:05,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:05,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379899052] [2023-11-17 16:00:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:05,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:05,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:05,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:05,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379899052] [2023-11-17 16:00:05,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379899052] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:05,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135484] [2023-11-17 16:00:05,151 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:00:05,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:05,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:05,152 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:05,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-11-17 16:00:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:05,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:00:05,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:05,337 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:05,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:05,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135484] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:05,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:05,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 15 [2023-11-17 16:00:05,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847605938] [2023-11-17 16:00:05,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:05,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:00:05,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:05,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:00:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:00:05,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:00:05,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 1537 transitions, 42631 flow. Second operand has 15 states, 15 states have (on average 198.0) internal successors, (2970), 15 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:05,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:05,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:00:05,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:08,497 INFO L124 PetriNetUnfolderBase]: 3206/5347 cut-off events. [2023-11-17 16:00:08,497 INFO L125 PetriNetUnfolderBase]: For 196997/196997 co-relation queries the response was YES. [2023-11-17 16:00:08,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63625 conditions, 5347 events. 3206/5347 cut-off events. For 196997/196997 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 34570 event pairs, 185 based on Foata normal form. 54/5401 useless extension candidates. Maximal degree in co-relation 63411. Up to 1693 conditions per place. [2023-11-17 16:00:08,604 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 668 selfloop transitions, 916 changer transitions 0/1584 dead transitions. [2023-11-17 16:00:08,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 1584 transitions, 45963 flow [2023-11-17 16:00:08,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-17 16:00:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-17 16:00:08,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 5015 transitions. [2023-11-17 16:00:08,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196652719665272 [2023-11-17 16:00:08,607 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 5015 transitions. [2023-11-17 16:00:08,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 5015 transitions. [2023-11-17 16:00:08,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:08,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 5015 transitions. [2023-11-17 16:00:08,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 200.6) internal successors, (5015), 25 states have internal predecessors, (5015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:08,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 478.0) internal successors, (12428), 26 states have internal predecessors, (12428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:08,615 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 478.0) internal successors, (12428), 26 states have internal predecessors, (12428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:08,615 INFO L175 Difference]: Start difference. First operand has 568 places, 1537 transitions, 42631 flow. Second operand 25 states and 5015 transitions. [2023-11-17 16:00:08,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 1584 transitions, 45963 flow [2023-11-17 16:00:10,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 1584 transitions, 45035 flow, removed 218 selfloop flow, removed 15 redundant places. [2023-11-17 16:00:10,841 INFO L231 Difference]: Finished difference. Result has 577 places, 1533 transitions, 43432 flow [2023-11-17 16:00:10,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=40817, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=896, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=43432, PETRI_PLACES=577, PETRI_TRANSITIONS=1533} [2023-11-17 16:00:10,843 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 557 predicate places. [2023-11-17 16:00:10,843 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 1533 transitions, 43432 flow [2023-11-17 16:00:10,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 198.0) internal successors, (2970), 15 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:10,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:10,844 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:10,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:11,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2023-11-17 16:00:11,049 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:11,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:11,049 INFO L85 PathProgramCache]: Analyzing trace with hash -548076283, now seen corresponding path program 62 times [2023-11-17 16:00:11,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:11,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208418514] [2023-11-17 16:00:11,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:11,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:11,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:11,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208418514] [2023-11-17 16:00:11,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208418514] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:11,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934087818] [2023-11-17 16:00:11,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:00:11,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:11,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:11,113 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:11,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-11-17 16:00:11,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:00:11,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:11,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:00:11,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:11,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:11,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934087818] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:11,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:11,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-17 16:00:11,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163531948] [2023-11-17 16:00:11,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:11,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:00:11,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:11,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:00:11,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:00:11,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:00:11,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 1533 transitions, 43432 flow. Second operand has 18 states, 18 states have (on average 197.94444444444446) internal successors, (3563), 18 states have internal predecessors, (3563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:11,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:11,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:00:11,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:14,670 INFO L124 PetriNetUnfolderBase]: 3421/5746 cut-off events. [2023-11-17 16:00:14,670 INFO L125 PetriNetUnfolderBase]: For 209409/209409 co-relation queries the response was YES. [2023-11-17 16:00:14,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69341 conditions, 5746 events. 3421/5746 cut-off events. For 209409/209409 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 37969 event pairs, 261 based on Foata normal form. 10/5756 useless extension candidates. Maximal degree in co-relation 69131. Up to 2621 conditions per place. [2023-11-17 16:00:14,782 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 1092 selfloop transitions, 592 changer transitions 0/1684 dead transitions. [2023-11-17 16:00:14,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 1684 transitions, 49834 flow [2023-11-17 16:00:14,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-17 16:00:14,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-17 16:00:14,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 5815 transitions. [2023-11-17 16:00:14,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41949213677679986 [2023-11-17 16:00:14,785 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 5815 transitions. [2023-11-17 16:00:14,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 5815 transitions. [2023-11-17 16:00:14,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:14,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 5815 transitions. [2023-11-17 16:00:14,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 200.51724137931035) internal successors, (5815), 29 states have internal predecessors, (5815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:14,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 478.0) internal successors, (14340), 30 states have internal predecessors, (14340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:14,796 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 478.0) internal successors, (14340), 30 states have internal predecessors, (14340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:14,796 INFO L175 Difference]: Start difference. First operand has 577 places, 1533 transitions, 43432 flow. Second operand 29 states and 5815 transitions. [2023-11-17 16:00:14,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 1684 transitions, 49834 flow [2023-11-17 16:00:17,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 1684 transitions, 48719 flow, removed 88 selfloop flow, removed 17 redundant places. [2023-11-17 16:00:17,490 INFO L231 Difference]: Finished difference. Result has 593 places, 1620 transitions, 46395 flow [2023-11-17 16:00:17,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=42393, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=507, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1007, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=46395, PETRI_PLACES=593, PETRI_TRANSITIONS=1620} [2023-11-17 16:00:17,491 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 573 predicate places. [2023-11-17 16:00:17,491 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 1620 transitions, 46395 flow [2023-11-17 16:00:17,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 197.94444444444446) internal successors, (3563), 18 states have internal predecessors, (3563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:17,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:17,492 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:17,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2023-11-17 16:00:17,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2023-11-17 16:00:17,692 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:17,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:17,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1902143327, now seen corresponding path program 63 times [2023-11-17 16:00:17,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:17,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551700697] [2023-11-17 16:00:17,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:17,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:17,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:17,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551700697] [2023-11-17 16:00:17,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551700697] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:17,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333659616] [2023-11-17 16:00:17,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:00:17,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:17,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:17,756 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:17,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-11-17 16:00:17,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 16:00:17,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:17,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:00:17,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:17,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:17,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333659616] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:17,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:17,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-11-17 16:00:17,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354620706] [2023-11-17 16:00:17,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:17,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:00:17,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:17,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:00:17,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:00:17,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:00:17,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 1620 transitions, 46395 flow. Second operand has 17 states, 17 states have (on average 197.76470588235293) internal successors, (3362), 17 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:17,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:17,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:00:17,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:21,859 INFO L124 PetriNetUnfolderBase]: 3880/6431 cut-off events. [2023-11-17 16:00:21,860 INFO L125 PetriNetUnfolderBase]: For 262997/262997 co-relation queries the response was YES. [2023-11-17 16:00:21,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80386 conditions, 6431 events. 3880/6431 cut-off events. For 262997/262997 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 42697 event pairs, 253 based on Foata normal form. 18/6449 useless extension candidates. Maximal degree in co-relation 80171. Up to 2243 conditions per place. [2023-11-17 16:00:21,982 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 685 selfloop transitions, 1217 changer transitions 0/1902 dead transitions. [2023-11-17 16:00:21,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 1902 transitions, 58321 flow [2023-11-17 16:00:21,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 16:00:21,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 16:00:21,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5219 transitions. [2023-11-17 16:00:21,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4199388477631155 [2023-11-17 16:00:21,985 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5219 transitions. [2023-11-17 16:00:21,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5219 transitions. [2023-11-17 16:00:21,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:21,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5219 transitions. [2023-11-17 16:00:21,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 200.73076923076923) internal successors, (5219), 26 states have internal predecessors, (5219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:22,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 478.0) internal successors, (12906), 27 states have internal predecessors, (12906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:22,150 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 478.0) internal successors, (12906), 27 states have internal predecessors, (12906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:22,150 INFO L175 Difference]: Start difference. First operand has 593 places, 1620 transitions, 46395 flow. Second operand 26 states and 5219 transitions. [2023-11-17 16:00:22,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 1902 transitions, 58321 flow [2023-11-17 16:00:24,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 1902 transitions, 57862 flow, removed 191 selfloop flow, removed 5 redundant places. [2023-11-17 16:00:24,972 INFO L231 Difference]: Finished difference. Result has 624 places, 1860 transitions, 57905 flow [2023-11-17 16:00:24,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=46002, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=997, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=57905, PETRI_PLACES=624, PETRI_TRANSITIONS=1860} [2023-11-17 16:00:24,973 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 604 predicate places. [2023-11-17 16:00:24,973 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 1860 transitions, 57905 flow [2023-11-17 16:00:24,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 197.76470588235293) internal successors, (3362), 17 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:24,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:24,974 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:24,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2023-11-17 16:00:25,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2023-11-17 16:00:25,175 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:25,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:25,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1735200801, now seen corresponding path program 64 times [2023-11-17 16:00:25,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:25,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75769910] [2023-11-17 16:00:25,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:25,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:25,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:25,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75769910] [2023-11-17 16:00:25,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75769910] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:25,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513632924] [2023-11-17 16:00:25,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:00:25,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:25,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:25,241 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:25,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-11-17 16:00:25,374 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:00:25,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:25,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:00:25,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:25,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:25,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:25,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513632924] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:25,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:25,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-17 16:00:25,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919272803] [2023-11-17 16:00:25,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:25,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:00:25,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:25,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:00:25,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:00:25,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:00:25,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 1860 transitions, 57905 flow. Second operand has 20 states, 20 states have (on average 197.55) internal successors, (3951), 20 states have internal predecessors, (3951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:25,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:25,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:00:25,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:29,883 INFO L124 PetriNetUnfolderBase]: 4017/6642 cut-off events. [2023-11-17 16:00:29,884 INFO L125 PetriNetUnfolderBase]: For 304150/304150 co-relation queries the response was YES. [2023-11-17 16:00:29,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89232 conditions, 6642 events. 4017/6642 cut-off events. For 304150/304150 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 44377 event pairs, 440 based on Foata normal form. 14/6656 useless extension candidates. Maximal degree in co-relation 89005. Up to 2952 conditions per place. [2023-11-17 16:00:30,026 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 904 selfloop transitions, 1051 changer transitions 21/1976 dead transitions. [2023-11-17 16:00:30,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 1976 transitions, 65474 flow [2023-11-17 16:00:30,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-17 16:00:30,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-17 16:00:30,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 5000 transitions. [2023-11-17 16:00:30,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41841004184100417 [2023-11-17 16:00:30,029 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 5000 transitions. [2023-11-17 16:00:30,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 5000 transitions. [2023-11-17 16:00:30,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:30,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 5000 transitions. [2023-11-17 16:00:30,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 200.0) internal successors, (5000), 25 states have internal predecessors, (5000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:30,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 478.0) internal successors, (12428), 26 states have internal predecessors, (12428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:30,037 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 478.0) internal successors, (12428), 26 states have internal predecessors, (12428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:30,038 INFO L175 Difference]: Start difference. First operand has 624 places, 1860 transitions, 57905 flow. Second operand 25 states and 5000 transitions. [2023-11-17 16:00:30,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 1976 transitions, 65474 flow [2023-11-17 16:00:33,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 1976 transitions, 63132 flow, removed 1045 selfloop flow, removed 9 redundant places. [2023-11-17 16:00:34,007 INFO L231 Difference]: Finished difference. Result has 648 places, 1921 transitions, 61538 flow [2023-11-17 16:00:34,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=56357, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1860, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=979, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=828, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=61538, PETRI_PLACES=648, PETRI_TRANSITIONS=1921} [2023-11-17 16:00:34,009 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 628 predicate places. [2023-11-17 16:00:34,009 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 1921 transitions, 61538 flow [2023-11-17 16:00:34,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 197.55) internal successors, (3951), 20 states have internal predecessors, (3951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:34,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:34,009 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:34,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2023-11-17 16:00:34,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:34,210 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:34,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:34,210 INFO L85 PathProgramCache]: Analyzing trace with hash -353965865, now seen corresponding path program 65 times [2023-11-17 16:00:34,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:34,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671749666] [2023-11-17 16:00:34,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:34,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:34,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:34,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671749666] [2023-11-17 16:00:34,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671749666] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:34,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769512869] [2023-11-17 16:00:34,266 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:00:34,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:34,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:34,267 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:34,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-11-17 16:00:34,375 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 16:00:34,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:34,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:00:34,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:34,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:34,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769512869] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:34,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:34,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2023-11-17 16:00:34,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659865446] [2023-11-17 16:00:34,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:34,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:00:34,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:34,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:00:34,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:00:34,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:00:34,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 1921 transitions, 61538 flow. Second operand has 17 states, 17 states have (on average 197.94117647058823) internal successors, (3365), 17 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:34,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:34,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:00:34,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:40,018 INFO L124 PetriNetUnfolderBase]: 4572/7515 cut-off events. [2023-11-17 16:00:40,018 INFO L125 PetriNetUnfolderBase]: For 334875/334875 co-relation queries the response was YES. [2023-11-17 16:00:40,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102848 conditions, 7515 events. 4572/7515 cut-off events. For 334875/334875 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 50324 event pairs, 221 based on Foata normal form. 22/7537 useless extension candidates. Maximal degree in co-relation 102611. Up to 2235 conditions per place. [2023-11-17 16:00:40,194 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 888 selfloop transitions, 1360 changer transitions 0/2248 dead transitions. [2023-11-17 16:00:40,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 2248 transitions, 76248 flow [2023-11-17 16:00:40,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 16:00:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 16:00:40,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5415 transitions. [2023-11-17 16:00:40,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41957229195722917 [2023-11-17 16:00:40,197 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 5415 transitions. [2023-11-17 16:00:40,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 5415 transitions. [2023-11-17 16:00:40,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:40,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 5415 transitions. [2023-11-17 16:00:40,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 200.55555555555554) internal successors, (5415), 27 states have internal predecessors, (5415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:40,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 478.0) internal successors, (13384), 28 states have internal predecessors, (13384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:40,208 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 478.0) internal successors, (13384), 28 states have internal predecessors, (13384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:40,208 INFO L175 Difference]: Start difference. First operand has 648 places, 1921 transitions, 61538 flow. Second operand 27 states and 5415 transitions. [2023-11-17 16:00:40,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 2248 transitions, 76248 flow [2023-11-17 16:00:44,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 2248 transitions, 75072 flow, removed 167 selfloop flow, removed 15 redundant places. [2023-11-17 16:00:45,015 INFO L231 Difference]: Finished difference. Result has 658 places, 2199 transitions, 74443 flow [2023-11-17 16:00:45,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=60454, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1921, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1095, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=74443, PETRI_PLACES=658, PETRI_TRANSITIONS=2199} [2023-11-17 16:00:45,017 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 638 predicate places. [2023-11-17 16:00:45,017 INFO L495 AbstractCegarLoop]: Abstraction has has 658 places, 2199 transitions, 74443 flow [2023-11-17 16:00:45,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 197.94117647058823) internal successors, (3365), 17 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:45,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:45,018 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:45,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2023-11-17 16:00:45,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:45,218 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:45,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:45,219 INFO L85 PathProgramCache]: Analyzing trace with hash 37204149, now seen corresponding path program 66 times [2023-11-17 16:00:45,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:45,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399097851] [2023-11-17 16:00:45,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:45,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:45,328 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:45,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:45,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399097851] [2023-11-17 16:00:45,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399097851] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:45,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324982100] [2023-11-17 16:00:45,329 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:00:45,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:45,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:45,333 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:45,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-11-17 16:00:45,471 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:00:45,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:45,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:00:45,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:45,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:45,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324982100] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:45,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:45,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-17 16:00:45,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416596298] [2023-11-17 16:00:45,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:45,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:00:45,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:45,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:00:45,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:00:45,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:00:45,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 2199 transitions, 74443 flow. Second operand has 20 states, 20 states have (on average 197.7) internal successors, (3954), 20 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:45,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:45,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:00:45,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:52,524 INFO L124 PetriNetUnfolderBase]: 5271/8740 cut-off events. [2023-11-17 16:00:52,524 INFO L125 PetriNetUnfolderBase]: For 409873/409873 co-relation queries the response was YES. [2023-11-17 16:00:52,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124296 conditions, 8740 events. 5271/8740 cut-off events. For 409873/409873 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 60921 event pairs, 308 based on Foata normal form. 30/8770 useless extension candidates. Maximal degree in co-relation 124057. Up to 3296 conditions per place. [2023-11-17 16:00:52,845 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 1376 selfloop transitions, 1200 changer transitions 0/2576 dead transitions. [2023-11-17 16:00:52,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 2576 transitions, 91569 flow [2023-11-17 16:00:52,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-17 16:00:52,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-17 16:00:52,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7214 transitions. [2023-11-17 16:00:52,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192236169223617 [2023-11-17 16:00:52,849 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7214 transitions. [2023-11-17 16:00:52,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7214 transitions. [2023-11-17 16:00:52,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:52,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7214 transitions. [2023-11-17 16:00:52,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 200.38888888888889) internal successors, (7214), 36 states have internal predecessors, (7214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:52,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 478.0) internal successors, (17686), 37 states have internal predecessors, (17686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:52,861 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 478.0) internal successors, (17686), 37 states have internal predecessors, (17686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:52,862 INFO L175 Difference]: Start difference. First operand has 658 places, 2199 transitions, 74443 flow. Second operand 36 states and 7214 transitions. [2023-11-17 16:00:52,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 693 places, 2576 transitions, 91569 flow [2023-11-17 16:00:59,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 2576 transitions, 90549 flow, removed 251 selfloop flow, removed 14 redundant places. [2023-11-17 16:00:59,558 INFO L231 Difference]: Finished difference. Result has 690 places, 2509 transitions, 88926 flow [2023-11-17 16:00:59,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=73380, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=903, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=88926, PETRI_PLACES=690, PETRI_TRANSITIONS=2509} [2023-11-17 16:00:59,560 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 670 predicate places. [2023-11-17 16:00:59,560 INFO L495 AbstractCegarLoop]: Abstraction has has 690 places, 2509 transitions, 88926 flow [2023-11-17 16:00:59,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 197.7) internal successors, (3954), 20 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:59,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:59,561 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:59,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:59,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-11-17 16:00:59,767 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:59,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1332967975, now seen corresponding path program 67 times [2023-11-17 16:00:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:59,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424445429] [2023-11-17 16:00:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:59,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:59,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:59,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:59,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424445429] [2023-11-17 16:00:59,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424445429] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:59,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872189235] [2023-11-17 16:00:59,825 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:00:59,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:59,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:59,828 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:59,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-11-17 16:00:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:59,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:00:59,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:59,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:01:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:00,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872189235] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:01:00,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:01:00,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-17 16:01:00,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876719753] [2023-11-17 16:01:00,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:01:00,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:01:00,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:00,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:01:00,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:01:00,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:01:00,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 2509 transitions, 88926 flow. Second operand has 18 states, 18 states have (on average 197.66666666666666) internal successors, (3558), 18 states have internal predecessors, (3558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:00,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:00,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:01:00,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:07,573 INFO L124 PetriNetUnfolderBase]: 5483/9056 cut-off events. [2023-11-17 16:01:07,574 INFO L125 PetriNetUnfolderBase]: For 471264/471264 co-relation queries the response was YES. [2023-11-17 16:01:07,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134117 conditions, 9056 events. 5483/9056 cut-off events. For 471264/471264 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 62831 event pairs, 1128 based on Foata normal form. 14/9070 useless extension candidates. Maximal degree in co-relation 133867. Up to 7756 conditions per place. [2023-11-17 16:01:07,842 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 2212 selfloop transitions, 442 changer transitions 11/2665 dead transitions. [2023-11-17 16:01:07,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 711 places, 2665 transitions, 99564 flow [2023-11-17 16:01:07,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 16:01:07,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 16:01:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4405 transitions. [2023-11-17 16:01:07,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41888550779764167 [2023-11-17 16:01:07,846 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4405 transitions. [2023-11-17 16:01:07,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4405 transitions. [2023-11-17 16:01:07,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:07,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4405 transitions. [2023-11-17 16:01:07,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 200.22727272727272) internal successors, (4405), 22 states have internal predecessors, (4405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:07,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 478.0) internal successors, (10994), 23 states have internal predecessors, (10994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:07,855 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 478.0) internal successors, (10994), 23 states have internal predecessors, (10994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:07,855 INFO L175 Difference]: Start difference. First operand has 690 places, 2509 transitions, 88926 flow. Second operand 22 states and 4405 transitions. [2023-11-17 16:01:07,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 711 places, 2665 transitions, 99564 flow [2023-11-17 16:01:16,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 697 places, 2665 transitions, 98938 flow, removed 235 selfloop flow, removed 14 redundant places. [2023-11-17 16:01:16,877 INFO L231 Difference]: Finished difference. Result has 703 places, 2613 transitions, 93972 flow [2023-11-17 16:01:16,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=88300, PETRI_DIFFERENCE_MINUEND_PLACES=676, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=93972, PETRI_PLACES=703, PETRI_TRANSITIONS=2613} [2023-11-17 16:01:16,880 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 683 predicate places. [2023-11-17 16:01:16,880 INFO L495 AbstractCegarLoop]: Abstraction has has 703 places, 2613 transitions, 93972 flow [2023-11-17 16:01:16,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 197.66666666666666) internal successors, (3558), 18 states have internal predecessors, (3558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:16,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:16,881 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:16,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2023-11-17 16:01:17,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:17,086 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:01:17,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:17,086 INFO L85 PathProgramCache]: Analyzing trace with hash -185918351, now seen corresponding path program 68 times [2023-11-17 16:01:17,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:17,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529513919] [2023-11-17 16:01:17,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:17,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:17,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:17,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529513919] [2023-11-17 16:01:17,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529513919] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:01:17,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408076980] [2023-11-17 16:01:17,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:01:17,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:17,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:01:17,159 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:01:17,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-11-17 16:01:17,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:01:17,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:01:17,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:01:17,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:01:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:17,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:01:17,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:17,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408076980] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:01:17,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:01:17,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-11-17 16:01:17,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389966735] [2023-11-17 16:01:17,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:01:17,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:01:17,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:17,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:01:17,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:01:17,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:01:17,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 2613 transitions, 93972 flow. Second operand has 17 states, 17 states have (on average 197.88235294117646) internal successors, (3364), 17 states have internal predecessors, (3364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:17,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:17,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:01:17,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:27,123 INFO L124 PetriNetUnfolderBase]: 5690/9347 cut-off events. [2023-11-17 16:01:27,124 INFO L125 PetriNetUnfolderBase]: For 517135/517135 co-relation queries the response was YES. [2023-11-17 16:01:27,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139637 conditions, 9347 events. 5690/9347 cut-off events. For 517135/517135 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 64660 event pairs, 319 based on Foata normal form. 16/9363 useless extension candidates. Maximal degree in co-relation 139381. Up to 7459 conditions per place. [2023-11-17 16:01:27,358 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 2279 selfloop transitions, 478 changer transitions 2/2759 dead transitions. [2023-11-17 16:01:27,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 721 places, 2759 transitions, 104000 flow [2023-11-17 16:01:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 16:01:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 16:01:27,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4017 transitions. [2023-11-17 16:01:27,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42018828451882845 [2023-11-17 16:01:27,361 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4017 transitions. [2023-11-17 16:01:27,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4017 transitions. [2023-11-17 16:01:27,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:27,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4017 transitions. [2023-11-17 16:01:27,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 200.85) internal successors, (4017), 20 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:27,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 478.0) internal successors, (10038), 21 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:27,367 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 478.0) internal successors, (10038), 21 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:27,367 INFO L175 Difference]: Start difference. First operand has 703 places, 2613 transitions, 93972 flow. Second operand 20 states and 4017 transitions. [2023-11-17 16:01:27,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 721 places, 2759 transitions, 104000 flow [2023-11-17 16:01:36,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 712 places, 2759 transitions, 102297 flow, removed 722 selfloop flow, removed 9 redundant places. [2023-11-17 16:01:36,381 INFO L231 Difference]: Finished difference. Result has 720 places, 2718 transitions, 97664 flow [2023-11-17 16:01:36,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=92575, PETRI_DIFFERENCE_MINUEND_PLACES=693, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=382, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=97664, PETRI_PLACES=720, PETRI_TRANSITIONS=2718} [2023-11-17 16:01:36,384 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 700 predicate places. [2023-11-17 16:01:36,384 INFO L495 AbstractCegarLoop]: Abstraction has has 720 places, 2718 transitions, 97664 flow [2023-11-17 16:01:36,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 197.88235294117646) internal successors, (3364), 17 states have internal predecessors, (3364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:36,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:36,385 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:36,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2023-11-17 16:01:36,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:36,590 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:01:36,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:36,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2113984015, now seen corresponding path program 69 times [2023-11-17 16:01:36,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:36,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138033378] [2023-11-17 16:01:36,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:36,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:36,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:36,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138033378] [2023-11-17 16:01:36,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138033378] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:01:36,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551602690] [2023-11-17 16:01:36,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:01:36,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:36,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:01:36,661 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:01:36,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-11-17 16:01:36,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 16:01:36,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:01:36,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:01:36,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:01:36,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:36,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:01:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:36,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551602690] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:01:36,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:01:36,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-17 16:01:36,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26528936] [2023-11-17 16:01:36,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:01:36,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:01:36,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:36,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:01:36,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:01:36,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:01:36,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 720 places, 2718 transitions, 97664 flow. Second operand has 20 states, 20 states have (on average 197.55) internal successors, (3951), 20 states have internal predecessors, (3951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:36,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:36,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:01:36,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:46,533 INFO L124 PetriNetUnfolderBase]: 5912/9693 cut-off events. [2023-11-17 16:01:46,533 INFO L125 PetriNetUnfolderBase]: For 594388/594388 co-relation queries the response was YES. [2023-11-17 16:01:46,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147076 conditions, 9693 events. 5912/9693 cut-off events. For 594388/594388 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 67435 event pairs, 307 based on Foata normal form. 40/9733 useless extension candidates. Maximal degree in co-relation 146815. Up to 6828 conditions per place. [2023-11-17 16:01:46,774 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 2148 selfloop transitions, 776 changer transitions 19/2943 dead transitions. [2023-11-17 16:01:46,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 745 places, 2943 transitions, 110490 flow [2023-11-17 16:01:46,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 16:01:46,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 16:01:46,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5225 transitions. [2023-11-17 16:01:46,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4204216285806244 [2023-11-17 16:01:46,777 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5225 transitions. [2023-11-17 16:01:46,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5225 transitions. [2023-11-17 16:01:46,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:46,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5225 transitions. [2023-11-17 16:01:46,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 200.96153846153845) internal successors, (5225), 26 states have internal predecessors, (5225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:46,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 478.0) internal successors, (12906), 27 states have internal predecessors, (12906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:46,786 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 478.0) internal successors, (12906), 27 states have internal predecessors, (12906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:46,786 INFO L175 Difference]: Start difference. First operand has 720 places, 2718 transitions, 97664 flow. Second operand 26 states and 5225 transitions. [2023-11-17 16:01:46,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 745 places, 2943 transitions, 110490 flow [2023-11-17 16:01:56,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 2943 transitions, 109226 flow, removed 581 selfloop flow, removed 8 redundant places. [2023-11-17 16:01:56,487 INFO L231 Difference]: Finished difference. Result has 744 places, 2866 transitions, 104607 flow [2023-11-17 16:01:56,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=96604, PETRI_DIFFERENCE_MINUEND_PLACES=712, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=626, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2048, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=104607, PETRI_PLACES=744, PETRI_TRANSITIONS=2866} [2023-11-17 16:01:56,489 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 724 predicate places. [2023-11-17 16:01:56,489 INFO L495 AbstractCegarLoop]: Abstraction has has 744 places, 2866 transitions, 104607 flow [2023-11-17 16:01:56,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 197.55) internal successors, (3951), 20 states have internal predecessors, (3951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:56,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:56,490 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:56,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2023-11-17 16:01:56,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:56,691 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:01:56,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:56,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1853477913, now seen corresponding path program 70 times [2023-11-17 16:01:56,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:56,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773965582] [2023-11-17 16:01:56,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:56,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:56,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:56,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773965582] [2023-11-17 16:01:56,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773965582] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:01:56,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472302882] [2023-11-17 16:01:56,747 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:01:56,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:56,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:01:56,748 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:01:56,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-11-17 16:01:56,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:01:56,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:01:56,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:01:56,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:01:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:56,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:01:56,971 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:56,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472302882] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:01:56,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:01:56,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-17 16:01:56,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172625889] [2023-11-17 16:01:56,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:01:56,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:01:56,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:56,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:01:56,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:01:56,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:01:56,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 2866 transitions, 104607 flow. Second operand has 16 states, 16 states have (on average 197.8125) internal successors, (3165), 16 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:56,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:56,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:01:56,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:08,635 INFO L124 PetriNetUnfolderBase]: 6010/9825 cut-off events. [2023-11-17 16:02:08,636 INFO L125 PetriNetUnfolderBase]: For 662809/662809 co-relation queries the response was YES. [2023-11-17 16:02:08,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152070 conditions, 9825 events. 6010/9825 cut-off events. For 662809/662809 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 68311 event pairs, 1228 based on Foata normal form. 78/9903 useless extension candidates. Maximal degree in co-relation 151801. Up to 8344 conditions per place. [2023-11-17 16:02:08,865 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 2471 selfloop transitions, 511 changer transitions 0/2982 dead transitions. [2023-11-17 16:02:08,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 768 places, 2982 transitions, 114631 flow [2023-11-17 16:02:08,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 16:02:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 16:02:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5418 transitions. [2023-11-17 16:02:08,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198047419804742 [2023-11-17 16:02:08,868 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 5418 transitions. [2023-11-17 16:02:08,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 5418 transitions. [2023-11-17 16:02:08,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:08,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 5418 transitions. [2023-11-17 16:02:08,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 200.66666666666666) internal successors, (5418), 27 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:08,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 478.0) internal successors, (13384), 28 states have internal predecessors, (13384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:08,876 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 478.0) internal successors, (13384), 28 states have internal predecessors, (13384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:08,876 INFO L175 Difference]: Start difference. First operand has 744 places, 2866 transitions, 104607 flow. Second operand 27 states and 5418 transitions. [2023-11-17 16:02:08,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 768 places, 2982 transitions, 114631 flow [2023-11-17 16:02:18,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 753 places, 2982 transitions, 110404 flow, removed 1999 selfloop flow, removed 15 redundant places. [2023-11-17 16:02:18,714 INFO L231 Difference]: Finished difference. Result has 760 places, 2930 transitions, 105537 flow [2023-11-17 16:02:18,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=100456, PETRI_DIFFERENCE_MINUEND_PLACES=727, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2839, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=425, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=105537, PETRI_PLACES=760, PETRI_TRANSITIONS=2930} [2023-11-17 16:02:18,717 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 740 predicate places. [2023-11-17 16:02:18,718 INFO L495 AbstractCegarLoop]: Abstraction has has 760 places, 2930 transitions, 105537 flow [2023-11-17 16:02:18,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 197.8125) internal successors, (3165), 16 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:18,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:18,718 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:18,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2023-11-17 16:02:18,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2023-11-17 16:02:18,925 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:02:18,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:18,926 INFO L85 PathProgramCache]: Analyzing trace with hash 227399033, now seen corresponding path program 71 times [2023-11-17 16:02:18,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:18,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362813568] [2023-11-17 16:02:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:18,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:02:18,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:18,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362813568] [2023-11-17 16:02:18,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362813568] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:02:18,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703381237] [2023-11-17 16:02:18,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:02:18,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:02:18,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:02:18,990 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:02:18,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2023-11-17 16:02:19,120 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 16:02:19,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:02:19,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:02:19,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:02:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:19,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:02:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:02:19,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703381237] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:02:19,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:02:19,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 16 [2023-11-17 16:02:19,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20843011] [2023-11-17 16:02:19,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:02:19,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:02:19,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:19,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:02:19,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:02:19,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:02:19,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 760 places, 2930 transitions, 105537 flow. Second operand has 16 states, 16 states have (on average 197.875) internal successors, (3166), 16 states have internal predecessors, (3166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:19,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:19,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:02:19,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:29,493 INFO L124 PetriNetUnfolderBase]: 6120/9985 cut-off events. [2023-11-17 16:02:29,493 INFO L125 PetriNetUnfolderBase]: For 563417/563417 co-relation queries the response was YES. [2023-11-17 16:02:29,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151123 conditions, 9985 events. 6120/9985 cut-off events. For 563417/563417 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 69554 event pairs, 282 based on Foata normal form. 52/10037 useless extension candidates. Maximal degree in co-relation 150855. Up to 7574 conditions per place. [2023-11-17 16:02:29,727 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 2240 selfloop transitions, 802 changer transitions 0/3042 dead transitions. [2023-11-17 16:02:29,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 782 places, 3042 transitions, 114301 flow [2023-11-17 16:02:29,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 16:02:29,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 16:02:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4614 transitions. [2023-11-17 16:02:29,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196834637074768 [2023-11-17 16:02:29,730 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4614 transitions. [2023-11-17 16:02:29,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4614 transitions. [2023-11-17 16:02:29,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:29,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4614 transitions. [2023-11-17 16:02:29,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 200.6086956521739) internal successors, (4614), 23 states have internal predecessors, (4614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:29,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 478.0) internal successors, (11472), 24 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:29,737 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 478.0) internal successors, (11472), 24 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:29,737 INFO L175 Difference]: Start difference. First operand has 760 places, 2930 transitions, 105537 flow. Second operand 23 states and 4614 transitions. [2023-11-17 16:02:29,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 782 places, 3042 transitions, 114301 flow [2023-11-17 16:02:38,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 770 places, 3042 transitions, 112523 flow, removed 690 selfloop flow, removed 12 redundant places. [2023-11-17 16:02:38,817 INFO L231 Difference]: Finished difference. Result has 778 places, 3004 transitions, 108476 flow [2023-11-17 16:02:38,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=102655, PETRI_DIFFERENCE_MINUEND_PLACES=748, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2904, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=704, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=108476, PETRI_PLACES=778, PETRI_TRANSITIONS=3004} [2023-11-17 16:02:38,820 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 758 predicate places. [2023-11-17 16:02:38,820 INFO L495 AbstractCegarLoop]: Abstraction has has 778 places, 3004 transitions, 108476 flow [2023-11-17 16:02:38,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 197.875) internal successors, (3166), 16 states have internal predecessors, (3166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:38,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:38,821 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:38,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2023-11-17 16:02:39,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:02:39,026 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:02:39,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:39,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1201984151, now seen corresponding path program 72 times [2023-11-17 16:02:39,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:39,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315779284] [2023-11-17 16:02:39,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:39,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:39,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:39,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315779284] [2023-11-17 16:02:39,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315779284] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:02:39,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369309218] [2023-11-17 16:02:39,090 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:02:39,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:02:39,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:02:39,091 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:02:39,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2023-11-17 16:02:39,207 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:02:39,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:02:39,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:02:39,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:02:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:39,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:02:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:02:39,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369309218] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:02:39,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:02:39,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 16 [2023-11-17 16:02:39,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059865743] [2023-11-17 16:02:39,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:02:39,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:02:39,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:39,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:02:39,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:02:39,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:02:39,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 778 places, 3004 transitions, 108476 flow. Second operand has 16 states, 16 states have (on average 197.8125) internal successors, (3165), 16 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:39,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:39,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:02:39,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:49,546 INFO L124 PetriNetUnfolderBase]: 6116/9997 cut-off events. [2023-11-17 16:02:49,546 INFO L125 PetriNetUnfolderBase]: For 548766/548766 co-relation queries the response was YES. [2023-11-17 16:02:49,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152304 conditions, 9997 events. 6116/9997 cut-off events. For 548766/548766 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 69920 event pairs, 339 based on Foata normal form. 24/10021 useless extension candidates. Maximal degree in co-relation 152027. Up to 7451 conditions per place. [2023-11-17 16:02:49,787 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 2302 selfloop transitions, 737 changer transitions 3/3042 dead transitions. [2023-11-17 16:02:49,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 795 places, 3042 transitions, 115061 flow [2023-11-17 16:02:49,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 16:02:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 16:02:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3815 transitions. [2023-11-17 16:02:49,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42006166042721865 [2023-11-17 16:02:49,789 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3815 transitions. [2023-11-17 16:02:49,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3815 transitions. [2023-11-17 16:02:49,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:49,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3815 transitions. [2023-11-17 16:02:49,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 200.78947368421052) internal successors, (3815), 19 states have internal predecessors, (3815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:49,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 478.0) internal successors, (9560), 20 states have internal predecessors, (9560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:49,796 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 478.0) internal successors, (9560), 20 states have internal predecessors, (9560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:49,796 INFO L175 Difference]: Start difference. First operand has 778 places, 3004 transitions, 108476 flow. Second operand 19 states and 3815 transitions. [2023-11-17 16:02:49,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 795 places, 3042 transitions, 115061 flow [2023-11-17 16:03:00,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 782 places, 3042 transitions, 113723 flow, removed 408 selfloop flow, removed 13 redundant places. [2023-11-17 16:03:00,073 INFO L231 Difference]: Finished difference. Result has 783 places, 3001 transitions, 108608 flow [2023-11-17 16:03:00,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=107084, PETRI_DIFFERENCE_MINUEND_PLACES=764, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=732, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=108608, PETRI_PLACES=783, PETRI_TRANSITIONS=3001} [2023-11-17 16:03:00,076 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 763 predicate places. [2023-11-17 16:03:00,076 INFO L495 AbstractCegarLoop]: Abstraction has has 783 places, 3001 transitions, 108608 flow [2023-11-17 16:03:00,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 197.8125) internal successors, (3165), 16 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:00,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:03:00,077 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:03:00,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2023-11-17 16:03:00,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:00,279 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:03:00,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:03:00,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1818229879, now seen corresponding path program 73 times [2023-11-17 16:03:00,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:03:00,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555440041] [2023-11-17 16:03:00,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:03:00,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:03:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:00,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:03:00,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555440041] [2023-11-17 16:03:00,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555440041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:03:00,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370000651] [2023-11-17 16:03:00,343 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:03:00,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:00,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:03:00,344 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:03:00,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2023-11-17 16:03:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:00,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:03:00,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:03:00,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:00,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:03:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:00,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370000651] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:03:00,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:03:00,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-17 16:03:00,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832842129] [2023-11-17 16:03:00,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:03:00,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:03:00,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:03:00,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:03:00,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:03:00,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:03:00,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 783 places, 3001 transitions, 108608 flow. Second operand has 20 states, 20 states have (on average 197.75) internal successors, (3955), 20 states have internal predecessors, (3955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:00,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:03:00,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:03:00,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:03:12,036 INFO L124 PetriNetUnfolderBase]: 6281/10292 cut-off events. [2023-11-17 16:03:12,037 INFO L125 PetriNetUnfolderBase]: For 558400/558400 co-relation queries the response was YES. [2023-11-17 16:03:12,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155185 conditions, 10292 events. 6281/10292 cut-off events. For 558400/558400 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 72572 event pairs, 295 based on Foata normal form. 30/10322 useless extension candidates. Maximal degree in co-relation 154911. Up to 8014 conditions per place. [2023-11-17 16:03:12,389 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 2437 selfloop transitions, 719 changer transitions 0/3156 dead transitions. [2023-11-17 16:03:12,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 818 places, 3156 transitions, 117692 flow [2023-11-17 16:03:12,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-17 16:03:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-17 16:03:12,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7196 transitions. [2023-11-17 16:03:12,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181775918177592 [2023-11-17 16:03:12,393 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7196 transitions. [2023-11-17 16:03:12,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7196 transitions. [2023-11-17 16:03:12,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:03:12,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7196 transitions. [2023-11-17 16:03:12,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 199.88888888888889) internal successors, (7196), 36 states have internal predecessors, (7196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:12,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 478.0) internal successors, (17686), 37 states have internal predecessors, (17686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:12,405 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 478.0) internal successors, (17686), 37 states have internal predecessors, (17686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:12,405 INFO L175 Difference]: Start difference. First operand has 783 places, 3001 transitions, 108608 flow. Second operand 36 states and 7196 transitions. [2023-11-17 16:03:12,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 818 places, 3156 transitions, 117692 flow [2023-11-17 16:03:21,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 804 places, 3156 transitions, 116382 flow, removed 59 selfloop flow, removed 14 redundant places. [2023-11-17 16:03:21,925 INFO L231 Difference]: Finished difference. Result has 809 places, 3111 transitions, 111629 flow [2023-11-17 16:03:21,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=107047, PETRI_DIFFERENCE_MINUEND_PLACES=769, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2995, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=609, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=111629, PETRI_PLACES=809, PETRI_TRANSITIONS=3111} [2023-11-17 16:03:21,928 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 789 predicate places. [2023-11-17 16:03:21,928 INFO L495 AbstractCegarLoop]: Abstraction has has 809 places, 3111 transitions, 111629 flow [2023-11-17 16:03:21,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 197.75) internal successors, (3955), 20 states have internal predecessors, (3955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:21,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:03:21,929 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:03:21,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2023-11-17 16:03:22,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:22,129 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:03:22,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:03:22,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1104902329, now seen corresponding path program 74 times [2023-11-17 16:03:22,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:03:22,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708498304] [2023-11-17 16:03:22,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:03:22,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:03:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:22,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:22,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:03:22,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708498304] [2023-11-17 16:03:22,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708498304] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:03:22,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614108908] [2023-11-17 16:03:22,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:03:22,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:22,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:03:22,190 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:03:22,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2023-11-17 16:03:22,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:03:22,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:03:22,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:03:22,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:03:22,372 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:22,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:03:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:22,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614108908] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:03:22,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:03:22,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-11-17 16:03:22,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236280036] [2023-11-17 16:03:22,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:03:22,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:03:22,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:03:22,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:03:22,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:03:22,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:03:22,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 3111 transitions, 111629 flow. Second operand has 17 states, 17 states have (on average 197.8235294117647) internal successors, (3363), 17 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:22,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:03:22,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:03:22,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:03:34,998 INFO L124 PetriNetUnfolderBase]: 6693/10890 cut-off events. [2023-11-17 16:03:34,998 INFO L125 PetriNetUnfolderBase]: For 624543/624543 co-relation queries the response was YES. [2023-11-17 16:03:35,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165084 conditions, 10890 events. 6693/10890 cut-off events. For 624543/624543 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 76572 event pairs, 1568 based on Foata normal form. 18/10908 useless extension candidates. Maximal degree in co-relation 164805. Up to 9746 conditions per place. [2023-11-17 16:03:35,283 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 2808 selfloop transitions, 564 changer transitions 0/3372 dead transitions. [2023-11-17 16:03:35,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 831 places, 3372 transitions, 126743 flow [2023-11-17 16:03:35,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 16:03:35,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 16:03:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4610 transitions. [2023-11-17 16:03:35,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4193196288884846 [2023-11-17 16:03:35,286 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4610 transitions. [2023-11-17 16:03:35,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4610 transitions. [2023-11-17 16:03:35,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:03:35,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4610 transitions. [2023-11-17 16:03:35,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 200.43478260869566) internal successors, (4610), 23 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:35,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 478.0) internal successors, (11472), 24 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:35,294 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 478.0) internal successors, (11472), 24 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:35,294 INFO L175 Difference]: Start difference. First operand has 809 places, 3111 transitions, 111629 flow. Second operand 23 states and 4610 transitions. [2023-11-17 16:03:35,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 831 places, 3372 transitions, 126743 flow [2023-11-17 16:03:45,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 817 places, 3372 transitions, 125680 flow, removed 229 selfloop flow, removed 14 redundant places. [2023-11-17 16:03:45,498 INFO L231 Difference]: Finished difference. Result has 824 places, 3329 transitions, 120624 flow [2023-11-17 16:03:45,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=110651, PETRI_DIFFERENCE_MINUEND_PLACES=795, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=372, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=120624, PETRI_PLACES=824, PETRI_TRANSITIONS=3329} [2023-11-17 16:03:45,500 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 804 predicate places. [2023-11-17 16:03:45,500 INFO L495 AbstractCegarLoop]: Abstraction has has 824 places, 3329 transitions, 120624 flow [2023-11-17 16:03:45,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 197.8235294117647) internal successors, (3363), 17 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:45,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:03:45,500 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:03:45,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2023-11-17 16:03:45,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2023-11-17 16:03:45,701 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:03:45,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:03:45,701 INFO L85 PathProgramCache]: Analyzing trace with hash 220263281, now seen corresponding path program 75 times [2023-11-17 16:03:45,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:03:45,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246484548] [2023-11-17 16:03:45,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:03:45,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:03:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:45,770 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:45,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:03:45,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246484548] [2023-11-17 16:03:45,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246484548] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:03:45,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438973544] [2023-11-17 16:03:45,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:03:45,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:45,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:03:45,772 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:03:45,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2023-11-17 16:03:45,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-17 16:03:45,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:03:45,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:03:45,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:03:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:45,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:03:45,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:45,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438973544] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:03:45,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:03:45,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2023-11-17 16:03:45,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383847039] [2023-11-17 16:03:45,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:03:45,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:03:45,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:03:45,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:03:45,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:03:45,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:03:45,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 3329 transitions, 120624 flow. Second operand has 17 states, 17 states have (on average 197.76470588235293) internal successors, (3362), 17 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:45,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:03:45,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:03:45,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:04:00,766 INFO L124 PetriNetUnfolderBase]: 6802/11065 cut-off events. [2023-11-17 16:04:00,766 INFO L125 PetriNetUnfolderBase]: For 625927/625927 co-relation queries the response was YES. [2023-11-17 16:04:01,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169535 conditions, 11065 events. 6802/11065 cut-off events. For 625927/625927 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 77940 event pairs, 269 based on Foata normal form. 18/11083 useless extension candidates. Maximal degree in co-relation 169249. Up to 7879 conditions per place. [2023-11-17 16:04:01,090 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 2310 selfloop transitions, 1124 changer transitions 0/3434 dead transitions. [2023-11-17 16:04:01,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 850 places, 3434 transitions, 129751 flow [2023-11-17 16:04:01,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 16:04:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 16:04:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5405 transitions. [2023-11-17 16:04:01,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41879745854641254 [2023-11-17 16:04:01,093 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 5405 transitions. [2023-11-17 16:04:01,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 5405 transitions. [2023-11-17 16:04:01,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:04:01,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 5405 transitions. [2023-11-17 16:04:01,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 200.1851851851852) internal successors, (5405), 27 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:01,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 478.0) internal successors, (13384), 28 states have internal predecessors, (13384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:01,104 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 478.0) internal successors, (13384), 28 states have internal predecessors, (13384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:01,104 INFO L175 Difference]: Start difference. First operand has 824 places, 3329 transitions, 120624 flow. Second operand 27 states and 5405 transitions. [2023-11-17 16:04:01,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 850 places, 3434 transitions, 129751 flow [2023-11-17 16:04:12,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 841 places, 3434 transitions, 128255 flow, removed 709 selfloop flow, removed 9 redundant places. [2023-11-17 16:04:12,586 INFO L231 Difference]: Finished difference. Result has 844 places, 3401 transitions, 123868 flow [2023-11-17 16:04:12,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=119230, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1052, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=123868, PETRI_PLACES=844, PETRI_TRANSITIONS=3401} [2023-11-17 16:04:12,588 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 824 predicate places. [2023-11-17 16:04:12,588 INFO L495 AbstractCegarLoop]: Abstraction has has 844 places, 3401 transitions, 123868 flow [2023-11-17 16:04:12,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 197.76470588235293) internal successors, (3362), 17 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:12,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:04:12,588 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:04:12,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2023-11-17 16:04:12,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2023-11-17 16:04:12,789 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:04:12,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:04:12,789 INFO L85 PathProgramCache]: Analyzing trace with hash 749133935, now seen corresponding path program 76 times [2023-11-17 16:04:12,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:04:12,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386867202] [2023-11-17 16:04:12,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:04:12,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:04:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:04:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:04:12,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:04:12,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386867202] [2023-11-17 16:04:12,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386867202] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:04:12,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406280531] [2023-11-17 16:04:12,849 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:04:12,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:04:12,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:04:12,850 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:04:12,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2023-11-17 16:04:12,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:04:12,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:04:12,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:04:12,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:04:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:04:13,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:04:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:04:13,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406280531] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:04:13,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:04:13,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-11-17 16:04:13,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536633101] [2023-11-17 16:04:13,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:04:13,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 16:04:13,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:04:13,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 16:04:13,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-17 16:04:13,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:04:13,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 844 places, 3401 transitions, 123868 flow. Second operand has 14 states, 14 states have (on average 197.85714285714286) internal successors, (2770), 14 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:13,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:04:13,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:04:13,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:04:29,913 INFO L124 PetriNetUnfolderBase]: 6827/11128 cut-off events. [2023-11-17 16:04:29,913 INFO L125 PetriNetUnfolderBase]: For 649924/649924 co-relation queries the response was YES. [2023-11-17 16:04:30,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171919 conditions, 11128 events. 6827/11128 cut-off events. For 649924/649924 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 78926 event pairs, 1037 based on Foata normal form. 2/11130 useless extension candidates. Maximal degree in co-relation 171629. Up to 8083 conditions per place. [2023-11-17 16:04:30,341 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 2794 selfloop transitions, 652 changer transitions 7/3453 dead transitions. [2023-11-17 16:04:30,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 852 places, 3453 transitions, 132145 flow [2023-11-17 16:04:30,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:04:30,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:04:30,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1815 transitions. [2023-11-17 16:04:30,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42189679218967924 [2023-11-17 16:04:30,342 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1815 transitions. [2023-11-17 16:04:30,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1815 transitions. [2023-11-17 16:04:30,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:04:30,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1815 transitions. [2023-11-17 16:04:30,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 201.66666666666666) internal successors, (1815), 9 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:30,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 478.0) internal successors, (4780), 10 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:30,345 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 478.0) internal successors, (4780), 10 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:30,346 INFO L175 Difference]: Start difference. First operand has 844 places, 3401 transitions, 123868 flow. Second operand 9 states and 1815 transitions. [2023-11-17 16:04:30,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 852 places, 3453 transitions, 132145 flow [2023-11-17 16:04:41,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 3453 transitions, 130333 flow, removed 270 selfloop flow, removed 16 redundant places. [2023-11-17 16:04:41,602 INFO L231 Difference]: Finished difference. Result has 841 places, 3409 transitions, 124455 flow [2023-11-17 16:04:41,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=122070, PETRI_DIFFERENCE_MINUEND_PLACES=828, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=644, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=124455, PETRI_PLACES=841, PETRI_TRANSITIONS=3409} [2023-11-17 16:04:41,604 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 821 predicate places. [2023-11-17 16:04:41,604 INFO L495 AbstractCegarLoop]: Abstraction has has 841 places, 3409 transitions, 124455 flow [2023-11-17 16:04:41,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 197.85714285714286) internal successors, (2770), 14 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:41,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:04:41,604 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:04:41,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2023-11-17 16:04:41,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2023-11-17 16:04:41,805 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:04:41,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:04:41,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1200507781, now seen corresponding path program 77 times [2023-11-17 16:04:41,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:04:41,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316938361] [2023-11-17 16:04:41,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:04:41,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:04:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:04:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:04:41,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:04:41,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316938361] [2023-11-17 16:04:41,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316938361] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:04:41,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128755824] [2023-11-17 16:04:41,866 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:04:41,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:04:41,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:04:41,867 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:04:41,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2023-11-17 16:04:41,988 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:04:41,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:04:41,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:04:41,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:04:42,026 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:04:42,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:04:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:04:42,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128755824] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:04:42,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:04:42,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-11-17 16:04:42,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296526944] [2023-11-17 16:04:42,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:04:42,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 16:04:42,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:04:42,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 16:04:42,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-11-17 16:04:42,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:04:42,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 841 places, 3409 transitions, 124455 flow. Second operand has 14 states, 14 states have (on average 197.85714285714286) internal successors, (2770), 14 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:42,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:04:42,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:04:42,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:04:58,567 INFO L124 PetriNetUnfolderBase]: 7178/11705 cut-off events. [2023-11-17 16:04:58,567 INFO L125 PetriNetUnfolderBase]: For 653151/653151 co-relation queries the response was YES. [2023-11-17 16:04:58,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180639 conditions, 11705 events. 7178/11705 cut-off events. For 653151/653151 co-relation queries the response was YES. Maximal size of possible extension queue 915. Compared 83716 event pairs, 46 based on Foata normal form. 20/11725 useless extension candidates. Maximal degree in co-relation 180345. Up to 6472 conditions per place. [2023-11-17 16:04:58,926 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 2384 selfloop transitions, 1288 changer transitions 0/3672 dead transitions. [2023-11-17 16:04:58,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 850 places, 3672 transitions, 138525 flow [2023-11-17 16:04:58,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 16:04:58,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 16:04:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2619 transitions. [2023-11-17 16:04:58,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42146765368522693 [2023-11-17 16:04:58,928 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2619 transitions. [2023-11-17 16:04:58,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2619 transitions. [2023-11-17 16:04:58,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:04:58,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2619 transitions. [2023-11-17 16:04:58,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 201.46153846153845) internal successors, (2619), 13 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:58,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 478.0) internal successors, (6692), 14 states have internal predecessors, (6692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:58,933 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 478.0) internal successors, (6692), 14 states have internal predecessors, (6692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:58,933 INFO L175 Difference]: Start difference. First operand has 841 places, 3409 transitions, 124455 flow. Second operand 13 states and 2619 transitions. [2023-11-17 16:04:58,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 850 places, 3672 transitions, 138525 flow [2023-11-17 16:05:11,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 843 places, 3672 transitions, 137677 flow, removed 79 selfloop flow, removed 7 redundant places. [2023-11-17 16:05:11,972 INFO L231 Difference]: Finished difference. Result has 850 places, 3586 transitions, 132836 flow [2023-11-17 16:05:11,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=123550, PETRI_DIFFERENCE_MINUEND_PLACES=831, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=132836, PETRI_PLACES=850, PETRI_TRANSITIONS=3586} [2023-11-17 16:05:11,974 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 830 predicate places. [2023-11-17 16:05:11,975 INFO L495 AbstractCegarLoop]: Abstraction has has 850 places, 3586 transitions, 132836 flow [2023-11-17 16:05:11,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 197.85714285714286) internal successors, (2770), 14 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:11,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:11,975 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:11,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2023-11-17 16:05:12,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:12,176 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:05:12,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:12,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1301899003, now seen corresponding path program 78 times [2023-11-17 16:05:12,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:12,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768733350] [2023-11-17 16:05:12,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:12,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:12,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:12,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768733350] [2023-11-17 16:05:12,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768733350] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:12,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477944217] [2023-11-17 16:05:12,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:05:12,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:12,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:12,236 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:05:12,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2023-11-17 16:05:12,357 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:05:12,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:05:12,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:05:12,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:12,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:12,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477944217] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:12,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:12,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2023-11-17 16:05:12,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266305864] [2023-11-17 16:05:12,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:12,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:05:12,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:12,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:05:12,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:05:12,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:05:12,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 850 places, 3586 transitions, 132836 flow. Second operand has 17 states, 17 states have (on average 197.76470588235293) internal successors, (3362), 17 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:12,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:12,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:05:12,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:29,561 INFO L124 PetriNetUnfolderBase]: 7275/11848 cut-off events. [2023-11-17 16:05:29,561 INFO L125 PetriNetUnfolderBase]: For 710383/710383 co-relation queries the response was YES. [2023-11-17 16:05:29,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186550 conditions, 11848 events. 7275/11848 cut-off events. For 710383/710383 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 84768 event pairs, 1827 based on Foata normal form. 20/11868 useless extension candidates. Maximal degree in co-relation 186253. Up to 11037 conditions per place. [2023-11-17 16:05:29,917 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 3303 selfloop transitions, 359 changer transitions 10/3672 dead transitions. [2023-11-17 16:05:29,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 865 places, 3672 transitions, 143152 flow [2023-11-17 16:05:29,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 16:05:29,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 16:05:29,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3407 transitions. [2023-11-17 16:05:29,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192714742800886 [2023-11-17 16:05:29,919 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3407 transitions. [2023-11-17 16:05:29,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3407 transitions. [2023-11-17 16:05:29,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:29,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3407 transitions. [2023-11-17 16:05:29,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 200.41176470588235) internal successors, (3407), 17 states have internal predecessors, (3407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:29,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:29,925 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:29,925 INFO L175 Difference]: Start difference. First operand has 850 places, 3586 transitions, 132836 flow. Second operand 17 states and 3407 transitions. [2023-11-17 16:05:29,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 865 places, 3672 transitions, 143152 flow [2023-11-17 16:05:43,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 859 places, 3672 transitions, 141827 flow, removed 73 selfloop flow, removed 6 redundant places. [2023-11-17 16:05:43,366 INFO L231 Difference]: Finished difference. Result has 866 places, 3632 transitions, 134927 flow [2023-11-17 16:05:43,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=131361, PETRI_DIFFERENCE_MINUEND_PLACES=843, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=134927, PETRI_PLACES=866, PETRI_TRANSITIONS=3632} [2023-11-17 16:05:43,369 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 846 predicate places. [2023-11-17 16:05:43,369 INFO L495 AbstractCegarLoop]: Abstraction has has 866 places, 3632 transitions, 134927 flow [2023-11-17 16:05:43,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 197.76470588235293) internal successors, (3362), 17 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:43,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:43,369 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:43,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2023-11-17 16:05:43,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:43,570 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:05:43,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:43,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1697692737, now seen corresponding path program 79 times [2023-11-17 16:05:43,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:43,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877327138] [2023-11-17 16:05:43,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:43,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:43,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:43,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:43,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877327138] [2023-11-17 16:05:43,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877327138] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:43,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018256280] [2023-11-17 16:05:43,629 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:05:43,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:43,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:43,630 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:05:43,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2023-11-17 16:05:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:43,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:05:43,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:43,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:43,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018256280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:43,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:43,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2023-11-17 16:05:43,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312826519] [2023-11-17 16:05:43,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:43,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:05:43,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:43,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:05:43,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:05:43,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:05:43,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 866 places, 3632 transitions, 134927 flow. Second operand has 17 states, 17 states have (on average 197.88235294117646) internal successors, (3364), 17 states have internal predecessors, (3364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:43,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:43,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:05:43,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:02,883 INFO L124 PetriNetUnfolderBase]: 7283/11872 cut-off events. [2023-11-17 16:06:02,884 INFO L125 PetriNetUnfolderBase]: For 699444/699444 co-relation queries the response was YES. [2023-11-17 16:06:03,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186659 conditions, 11872 events. 7283/11872 cut-off events. For 699444/699444 co-relation queries the response was YES. Maximal size of possible extension queue 934. Compared 85538 event pairs, 451 based on Foata normal form. 16/11888 useless extension candidates. Maximal degree in co-relation 186357. Up to 7891 conditions per place. [2023-11-17 16:06:03,533 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 2615 selfloop transitions, 1067 changer transitions 6/3688 dead transitions. [2023-11-17 16:06:03,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 885 places, 3688 transitions, 142819 flow [2023-11-17 16:06:03,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 16:06:03,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 16:06:03,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4418 transitions. [2023-11-17 16:06:03,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201217192848992 [2023-11-17 16:06:03,540 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4418 transitions. [2023-11-17 16:06:03,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4418 transitions. [2023-11-17 16:06:03,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:03,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4418 transitions. [2023-11-17 16:06:03,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 200.8181818181818) internal successors, (4418), 22 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:03,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 478.0) internal successors, (10994), 23 states have internal predecessors, (10994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:03,550 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 478.0) internal successors, (10994), 23 states have internal predecessors, (10994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:03,550 INFO L175 Difference]: Start difference. First operand has 866 places, 3632 transitions, 134927 flow. Second operand 22 states and 4418 transitions. [2023-11-17 16:06:03,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 885 places, 3688 transitions, 142819 flow [2023-11-17 16:06:16,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 3688 transitions, 142379 flow, removed 175 selfloop flow, removed 7 redundant places. [2023-11-17 16:06:16,977 INFO L231 Difference]: Finished difference. Result has 882 places, 3633 transitions, 136569 flow [2023-11-17 16:06:16,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=134487, PETRI_DIFFERENCE_MINUEND_PLACES=857, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=136569, PETRI_PLACES=882, PETRI_TRANSITIONS=3633} [2023-11-17 16:06:16,979 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 862 predicate places. [2023-11-17 16:06:16,979 INFO L495 AbstractCegarLoop]: Abstraction has has 882 places, 3633 transitions, 136569 flow [2023-11-17 16:06:16,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 197.88235294117646) internal successors, (3364), 17 states have internal predecessors, (3364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:16,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:16,979 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:06:16,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2023-11-17 16:06:17,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:06:17,180 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:06:17,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:17,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1344393735, now seen corresponding path program 80 times [2023-11-17 16:06:17,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:17,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757321287] [2023-11-17 16:06:17,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:17,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:17,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:17,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757321287] [2023-11-17 16:06:17,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757321287] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:06:17,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588960955] [2023-11-17 16:06:17,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:06:17,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:06:17,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:06:17,238 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:06:17,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2023-11-17 16:06:17,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:06:17,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:06:17,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:06:17,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:06:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:17,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:06:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:17,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588960955] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:06:17,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:06:17,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-11-17 16:06:17,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663410463] [2023-11-17 16:06:17,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:06:17,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:06:17,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:17,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:06:17,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:06:17,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 478 [2023-11-17 16:06:17,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 882 places, 3633 transitions, 136569 flow. Second operand has 17 states, 17 states have (on average 197.8235294117647) internal successors, (3363), 17 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:17,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:17,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 478 [2023-11-17 16:06:17,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:35,429 INFO L124 PetriNetUnfolderBase]: 7361/11968 cut-off events. [2023-11-17 16:06:35,429 INFO L125 PetriNetUnfolderBase]: For 719625/719625 co-relation queries the response was YES. [2023-11-17 16:06:35,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191046 conditions, 11968 events. 7361/11968 cut-off events. For 719625/719625 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 85454 event pairs, 1915 based on Foata normal form. 8/11976 useless extension candidates. Maximal degree in co-relation 190741. Up to 11471 conditions per place. [2023-11-17 16:06:35,918 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 3481 selfloop transitions, 223 changer transitions 4/3708 dead transitions. [2023-11-17 16:06:35,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 896 places, 3708 transitions, 146676 flow [2023-11-17 16:06:35,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 16:06:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 16:06:35,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3208 transitions. [2023-11-17 16:06:35,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194560669456067 [2023-11-17 16:06:35,921 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3208 transitions. [2023-11-17 16:06:35,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3208 transitions. [2023-11-17 16:06:35,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:35,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3208 transitions. [2023-11-17 16:06:35,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 200.5) internal successors, (3208), 16 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:35,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 478.0) internal successors, (8126), 17 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:35,926 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 478.0) internal successors, (8126), 17 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:35,926 INFO L175 Difference]: Start difference. First operand has 882 places, 3633 transitions, 136569 flow. Second operand 16 states and 3208 transitions. [2023-11-17 16:06:35,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 896 places, 3708 transitions, 146676 flow Received shutdown request... [2023-11-17 16:06:40,539 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 16:06:40,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2023-11-17 16:06:40,558 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:06:40,558 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:06:40,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:06:40,740 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-11-17 16:06:40,741 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 16:06:40,741 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 16:06:40,742 INFO L445 BasicCegarLoop]: Path program histogram: [80, 6, 6, 2] [2023-11-17 16:06:40,745 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:06:40,745 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:06:40,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:06:40 BasicIcfg [2023-11-17 16:06:40,747 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:06:40,747 INFO L158 Benchmark]: Toolchain (without parser) took 522557.15ms. Allocated memory was 262.1MB in the beginning and 5.5GB in the end (delta: 5.3GB). Free memory was 213.5MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-11-17 16:06:40,748 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 182.5MB. Free memory was 137.2MB in the beginning and 137.0MB in the end (delta: 158.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:06:40,748 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.80ms. Allocated memory is still 262.1MB. Free memory was 213.3MB in the beginning and 202.0MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 16:06:40,748 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.66ms. Allocated memory is still 262.1MB. Free memory was 201.7MB in the beginning and 199.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:06:40,748 INFO L158 Benchmark]: Boogie Preprocessor took 25.77ms. Allocated memory is still 262.1MB. Free memory was 199.6MB in the beginning and 198.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:06:40,748 INFO L158 Benchmark]: RCFGBuilder took 441.73ms. Allocated memory is still 262.1MB. Free memory was 197.8MB in the beginning and 179.3MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-11-17 16:06:40,748 INFO L158 Benchmark]: TraceAbstraction took 521842.78ms. Allocated memory was 262.1MB in the beginning and 5.5GB in the end (delta: 5.3GB). Free memory was 178.9MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-11-17 16:06:40,749 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 182.5MB. Free memory was 137.2MB in the beginning and 137.0MB in the end (delta: 158.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 200.80ms. Allocated memory is still 262.1MB. Free memory was 213.3MB in the beginning and 202.0MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.66ms. Allocated memory is still 262.1MB. Free memory was 201.7MB in the beginning and 199.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.77ms. Allocated memory is still 262.1MB. Free memory was 199.6MB in the beginning and 198.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 441.73ms. Allocated memory is still 262.1MB. Free memory was 197.8MB in the beginning and 179.3MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 521842.78ms. Allocated memory was 262.1MB in the beginning and 5.5GB in the end (delta: 5.3GB). Free memory was 178.9MB in the beginning and 3.4GB in the end (delta: -3.2GB). 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: 5.5s, 209 PlacesBefore, 20 PlacesAfterwards, 216 TransitionsBefore, 15 TransitionsAfterwards, 11288 CoEnabledTransitionPairs, 8 FixpointIterations, 63 TrivialSequentialCompositions, 129 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 41 ConcurrentYvCompositions, 12 ChoiceCompositions, 251 TotalNumberOfCompositions, 9537 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9537, independent: 9537, independent conditional: 0, independent unconditional: 9537, 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: 8318, independent: 8318, independent conditional: 0, independent unconditional: 8318, 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: 8318, independent: 8318, independent conditional: 0, independent unconditional: 8318, 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: 9537, independent: 1219, independent conditional: 0, independent unconditional: 1219, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 8318, unknown conditional: 0, unknown unconditional: 8318] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, 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: 84]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 342 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 521.7s, OverallIterations: 94, TraceHistogramMax: 3, PathProgramHistogramMax: 80, EmptinessCheckTime: 0.0s, AutomataDifference: 469.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3916 SdHoareTripleChecker+Valid, 13.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3916 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 10.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 684 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26969 IncrementalHoareTripleChecker+Invalid, 27653 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 684 mSolverCounterUnsat, 0 mSDtfsCounter, 26969 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4010 GetRequests, 2081 SyntacticMatches, 277 SemanticMatches, 1652 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10514 ImplicationChecksByTransitivity, 11.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136569occurred in iteration=93, InterpolantAutomatonStates: 1354, 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: 1.2s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 18.9s InterpolantComputationTime, 2972 NumberOfCodeBlocks, 2972 NumberOfCodeBlocksAsserted, 280 NumberOfCheckSat, 4132 ConstructedInterpolants, 0 QuantifiedInterpolants, 21179 SizeOfPredicates, 201 NumberOfNonLiveVariables, 15240 ConjunctsInSsa, 950 ConjunctsInUnsatCore, 264 InterpolantComputations, 9 PerfectInterpolantSequences, 496/1525 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