/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/chl-chromosome-opt-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:50:13,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:50:13,978 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 15:50:14,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:50:14,006 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:50:14,007 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:50:14,007 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:50:14,008 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:50:14,008 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:50:14,011 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:50:14,011 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:50:14,011 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:50:14,011 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:50:14,012 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:50:14,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:50:14,012 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:50:14,013 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:50:14,013 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:50:14,013 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:50:14,013 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:50:14,013 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:50:14,014 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:50:14,014 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:50:14,014 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:50:14,015 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:50:14,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:50:14,015 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:50:14,016 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:50:14,016 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:50:14,016 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:50:14,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:50:14,017 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:50:14,017 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:50:14,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:50:14,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:50:14,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:50:14,177 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:50:14,177 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:50:14,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-17 15:50:15,128 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:50:15,327 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:50:15,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-17 15:50:15,333 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6420395/c3304993e5d44e5b854bf58d919298a2/FLAG6940206bb [2023-11-17 15:50:15,343 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6420395/c3304993e5d44e5b854bf58d919298a2 [2023-11-17 15:50:15,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:50:15,345 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:50:15,346 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:50:15,346 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:50:15,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:50:15,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:50:15" (1/1) ... [2023-11-17 15:50:15,350 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9760be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:15, skipping insertion in model container [2023-11-17 15:50:15,350 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:50:15" (1/1) ... [2023-11-17 15:50:15,368 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:50:15,493 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/chl-chromosome-opt-symm.wvr.c[2592,2605] [2023-11-17 15:50:15,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:50:15,515 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:50:15,528 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/chl-chromosome-opt-symm.wvr.c[2592,2605] [2023-11-17 15:50:15,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:50:15,542 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:50:15,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:15 WrapperNode [2023-11-17 15:50:15,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:50:15,551 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:50:15,551 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:50:15,551 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:50:15,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:15" (1/1) ... [2023-11-17 15:50:15,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:15" (1/1) ... [2023-11-17 15:50:15,579 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 181 [2023-11-17 15:50:15,579 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:50:15,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:50:15,580 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:50:15,580 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:50:15,585 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:15" (1/1) ... [2023-11-17 15:50:15,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:15" (1/1) ... [2023-11-17 15:50:15,587 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:15" (1/1) ... [2023-11-17 15:50:15,588 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:15" (1/1) ... [2023-11-17 15:50:15,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:15" (1/1) ... [2023-11-17 15:50:15,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:15" (1/1) ... [2023-11-17 15:50:15,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:15" (1/1) ... [2023-11-17 15:50:15,596 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:15" (1/1) ... [2023-11-17 15:50:15,598 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:50:15,598 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:50:15,599 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:50:15,599 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:50:15,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:15" (1/1) ... [2023-11-17 15:50:15,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:50:15,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:15,631 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 15:50:15,648 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 15:50:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:50:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:50:15,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:50:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:50:15,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:50:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:50:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:50:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:50:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 15:50:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:50:15,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:50:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:50:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:50:15,658 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 15:50:15,738 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:50:15,739 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:50:15,967 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:50:15,992 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:50:15,992 INFO L307 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-17 15:50:15,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:50:15 BoogieIcfgContainer [2023-11-17 15:50:15,994 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:50:15,996 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:50:15,996 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:50:15,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:50:15,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:50:15" (1/3) ... [2023-11-17 15:50:16,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259c9e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:50:16, skipping insertion in model container [2023-11-17 15:50:16,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:15" (2/3) ... [2023-11-17 15:50:16,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259c9e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:50:16, skipping insertion in model container [2023-11-17 15:50:16,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:50:15" (3/3) ... [2023-11-17 15:50:16,001 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-11-17 15:50:16,016 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:50:16,016 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:50:16,016 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:50:16,084 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 15:50:16,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 216 transitions, 446 flow [2023-11-17 15:50:16,164 INFO L124 PetriNetUnfolderBase]: 19/214 cut-off events. [2023-11-17 15:50:16,176 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:50:16,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 214 events. 19/214 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 221 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 153. Up to 3 conditions per place. [2023-11-17 15:50:16,181 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 216 transitions, 446 flow [2023-11-17 15:50:16,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 205 transitions, 422 flow [2023-11-17 15:50:16,191 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:50:16,199 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 205 transitions, 422 flow [2023-11-17 15:50:16,211 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 205 transitions, 422 flow [2023-11-17 15:50:16,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 205 transitions, 422 flow [2023-11-17 15:50:16,238 INFO L124 PetriNetUnfolderBase]: 19/205 cut-off events. [2023-11-17 15:50:16,238 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:50:16,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 205 events. 19/205 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 221 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 153. Up to 3 conditions per place. [2023-11-17 15:50:16,243 INFO L119 LiptonReduction]: Number of co-enabled transitions 3672 [2023-11-17 15:50:20,588 INFO L134 LiptonReduction]: Checked pairs total: 4336 [2023-11-17 15:50:20,588 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-11-17 15:50:20,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:50:20,619 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;@5627ff7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:50:20,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 15:50:20,628 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:50:20,628 INFO L124 PetriNetUnfolderBase]: 6/24 cut-off events. [2023-11-17 15:50:20,629 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:50:20,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:20,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:20,630 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 15:50:20,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:20,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1972019225, now seen corresponding path program 1 times [2023-11-17 15:50:20,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:20,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386719885] [2023-11-17 15:50:20,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:20,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:20,911 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 15:50:20,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:20,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386719885] [2023-11-17 15:50:20,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386719885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:20,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:20,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:50:20,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512717156] [2023-11-17 15:50:20,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:20,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:50:20,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:20,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:50:20,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:50:20,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 446 [2023-11-17 15:50:20,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:20,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:20,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 446 [2023-11-17 15:50:20,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:21,013 INFO L124 PetriNetUnfolderBase]: 91/155 cut-off events. [2023-11-17 15:50:21,013 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-17 15:50:21,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 155 events. 91/155 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 376 event pairs, 51 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 275. Up to 151 conditions per place. [2023-11-17 15:50:21,015 INFO L140 encePairwiseOnDemand]: 441/446 looper letters, 22 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-11-17 15:50:21,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 118 flow [2023-11-17 15:50:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:50:21,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:50:21,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 550 transitions. [2023-11-17 15:50:21,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110612855007474 [2023-11-17 15:50:21,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 550 transitions. [2023-11-17 15:50:21,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 550 transitions. [2023-11-17 15:50:21,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:21,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 550 transitions. [2023-11-17 15:50:21,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,037 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 3 states and 550 transitions. [2023-11-17 15:50:21,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 118 flow [2023-11-17 15:50:21,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 15:50:21,040 INFO L231 Difference]: Finished difference. Result has 25 places, 27 transitions, 76 flow [2023-11-17 15:50:21,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=25, PETRI_TRANSITIONS=27} [2023-11-17 15:50:21,043 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-11-17 15:50:21,043 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 27 transitions, 76 flow [2023-11-17 15:50:21,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:21,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:21,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:50:21,044 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 15:50:21,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:21,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1250895684, now seen corresponding path program 1 times [2023-11-17 15:50:21,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:21,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725510077] [2023-11-17 15:50:21,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:21,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:50:21,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:21,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725510077] [2023-11-17 15:50:21,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725510077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:21,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:21,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:50:21,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310731999] [2023-11-17 15:50:21,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:21,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:50:21,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:21,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:50:21,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:50:21,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 446 [2023-11-17 15:50:21,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 27 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:21,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 446 [2023-11-17 15:50:21,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:21,270 INFO L124 PetriNetUnfolderBase]: 195/336 cut-off events. [2023-11-17 15:50:21,270 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:50:21,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 336 events. 195/336 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1164 event pairs, 60 based on Foata normal form. 4/257 useless extension candidates. Maximal degree in co-relation 679. Up to 166 conditions per place. [2023-11-17 15:50:21,274 INFO L140 encePairwiseOnDemand]: 440/446 looper letters, 47 selfloop transitions, 5 changer transitions 2/54 dead transitions. [2023-11-17 15:50:21,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 54 transitions, 244 flow [2023-11-17 15:50:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:50:21,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:50:21,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 993 transitions. [2023-11-17 15:50:21,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452914798206278 [2023-11-17 15:50:21,279 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 993 transitions. [2023-11-17 15:50:21,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 993 transitions. [2023-11-17 15:50:21,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:21,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 993 transitions. [2023-11-17 15:50:21,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 198.6) internal successors, (993), 5 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 446.0) internal successors, (2676), 6 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,286 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 446.0) internal successors, (2676), 6 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,286 INFO L175 Difference]: Start difference. First operand has 25 places, 27 transitions, 76 flow. Second operand 5 states and 993 transitions. [2023-11-17 15:50:21,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 54 transitions, 244 flow [2023-11-17 15:50:21,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 54 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:50:21,287 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 96 flow [2023-11-17 15:50:21,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=96, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2023-11-17 15:50:21,288 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-11-17 15:50:21,289 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 96 flow [2023-11-17 15:50:21,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:21,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:21,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:50:21,290 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 15:50:21,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:21,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1636231820, now seen corresponding path program 2 times [2023-11-17 15:50:21,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:21,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164244336] [2023-11-17 15:50:21,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:21,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:21,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:50:21,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:21,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164244336] [2023-11-17 15:50:21,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164244336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:21,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:21,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:50:21,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152454035] [2023-11-17 15:50:21,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:21,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:50:21,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:21,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:50:21,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:50:21,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 446 [2023-11-17 15:50:21,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:21,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 446 [2023-11-17 15:50:21,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:21,476 INFO L124 PetriNetUnfolderBase]: 239/410 cut-off events. [2023-11-17 15:50:21,477 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-17 15:50:21,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 410 events. 239/410 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1465 event pairs, 58 based on Foata normal form. 4/345 useless extension candidates. Maximal degree in co-relation 915. Up to 309 conditions per place. [2023-11-17 15:50:21,478 INFO L140 encePairwiseOnDemand]: 441/446 looper letters, 45 selfloop transitions, 4 changer transitions 3/52 dead transitions. [2023-11-17 15:50:21,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 52 transitions, 262 flow [2023-11-17 15:50:21,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:50:21,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:50:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 801 transitions. [2023-11-17 15:50:21,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489910313901345 [2023-11-17 15:50:21,480 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 801 transitions. [2023-11-17 15:50:21,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 801 transitions. [2023-11-17 15:50:21,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:21,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 801 transitions. [2023-11-17 15:50:21,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 200.25) internal successors, (801), 4 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 446.0) internal successors, (2230), 5 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,485 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 446.0) internal successors, (2230), 5 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,485 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 96 flow. Second operand 4 states and 801 transitions. [2023-11-17 15:50:21,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 52 transitions, 262 flow [2023-11-17 15:50:21,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 52 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:50:21,487 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 130 flow [2023-11-17 15:50:21,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2023-11-17 15:50:21,487 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-11-17 15:50:21,487 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 130 flow [2023-11-17 15:50:21,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:21,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:21,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:50:21,488 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 15:50:21,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:21,489 INFO L85 PathProgramCache]: Analyzing trace with hash -283373742, now seen corresponding path program 3 times [2023-11-17 15:50:21,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:21,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24534789] [2023-11-17 15:50:21,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:21,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:50:21,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:21,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24534789] [2023-11-17 15:50:21,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24534789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:21,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:21,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:50:21,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099741850] [2023-11-17 15:50:21,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:21,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:50:21,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:21,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:50:21,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:50:21,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 446 [2023-11-17 15:50:21,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:21,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 446 [2023-11-17 15:50:21,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:21,607 INFO L124 PetriNetUnfolderBase]: 229/390 cut-off events. [2023-11-17 15:50:21,608 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2023-11-17 15:50:21,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 390 events. 229/390 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1364 event pairs, 64 based on Foata normal form. 4/328 useless extension candidates. Maximal degree in co-relation 945. Up to 189 conditions per place. [2023-11-17 15:50:21,609 INFO L140 encePairwiseOnDemand]: 441/446 looper letters, 48 selfloop transitions, 7 changer transitions 3/58 dead transitions. [2023-11-17 15:50:21,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 58 transitions, 315 flow [2023-11-17 15:50:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:50:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:50:21,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 805 transitions. [2023-11-17 15:50:21,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45123318385650224 [2023-11-17 15:50:21,612 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 805 transitions. [2023-11-17 15:50:21,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 805 transitions. [2023-11-17 15:50:21,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:21,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 805 transitions. [2023-11-17 15:50:21,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 201.25) internal successors, (805), 4 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 446.0) internal successors, (2230), 5 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,616 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 446.0) internal successors, (2230), 5 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,617 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 130 flow. Second operand 4 states and 805 transitions. [2023-11-17 15:50:21,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 58 transitions, 315 flow [2023-11-17 15:50:21,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 58 transitions, 311 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-17 15:50:21,619 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 155 flow [2023-11-17 15:50:21,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-11-17 15:50:21,619 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-11-17 15:50:21,619 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 155 flow [2023-11-17 15:50:21,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:21,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:21,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:50:21,620 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 15:50:21,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:21,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1711088498, now seen corresponding path program 1 times [2023-11-17 15:50:21,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:21,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375435703] [2023-11-17 15:50:21,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:21,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:50:21,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:21,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375435703] [2023-11-17 15:50:21,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375435703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:21,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410598127] [2023-11-17 15:50:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:21,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:21,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:21,681 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 15:50:21,707 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 15:50:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:21,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 15:50:21,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:21,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:50:21,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:50:21,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:50:21,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410598127] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:50:21,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:50:21,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-17 15:50:21,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260960385] [2023-11-17 15:50:21,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:50:21,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 15:50:21,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:21,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 15:50:21,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:50:21,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 446 [2023-11-17 15:50:21,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 155 flow. Second operand has 8 states, 8 states have (on average 177.125) internal successors, (1417), 8 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 15:50:21,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:21,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 446 [2023-11-17 15:50:21,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:21,923 INFO L124 PetriNetUnfolderBase]: 198/354 cut-off events. [2023-11-17 15:50:21,924 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2023-11-17 15:50:21,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 354 events. 198/354 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1203 event pairs, 114 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 855. Up to 332 conditions per place. [2023-11-17 15:50:21,925 INFO L140 encePairwiseOnDemand]: 441/446 looper letters, 29 selfloop transitions, 10 changer transitions 0/40 dead transitions. [2023-11-17 15:50:21,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 257 flow [2023-11-17 15:50:21,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:50:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:50:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1082 transitions. [2023-11-17 15:50:21,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40433482810164423 [2023-11-17 15:50:21,928 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1082 transitions. [2023-11-17 15:50:21,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1082 transitions. [2023-11-17 15:50:21,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:21,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1082 transitions. [2023-11-17 15:50:21,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 446.0) internal successors, (3122), 7 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,935 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 446.0) internal successors, (3122), 7 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:21,935 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 155 flow. Second operand 6 states and 1082 transitions. [2023-11-17 15:50:21,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 257 flow [2023-11-17 15:50:21,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 245 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-17 15:50:21,939 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 209 flow [2023-11-17 15:50:21,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=209, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2023-11-17 15:50:21,941 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2023-11-17 15:50:21,941 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 209 flow [2023-11-17 15:50:21,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 177.125) internal successors, (1417), 8 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 15:50:21,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:21,941 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:21,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 15:50:22,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:22,148 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 15:50:22,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:22,148 INFO L85 PathProgramCache]: Analyzing trace with hash 722586617, now seen corresponding path program 2 times [2023-11-17 15:50:22,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:22,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437696715] [2023-11-17 15:50:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:22,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-17 15:50:22,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:22,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437696715] [2023-11-17 15:50:22,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437696715] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:22,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139413281] [2023-11-17 15:50:22,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:50:22,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:22,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:22,315 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 15:50:22,320 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 15:50:22,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 15:50:22,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:22,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-17 15:50:22,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-17 15:50:22,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:22,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139413281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:22,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:22,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 16 [2023-11-17 15:50:22,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237406333] [2023-11-17 15:50:22,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:22,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:50:22,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:22,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:50:22,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:50:22,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 446 [2023-11-17 15:50:22,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 209 flow. Second operand has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:22,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:22,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 446 [2023-11-17 15:50:22,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:22,878 INFO L124 PetriNetUnfolderBase]: 297/526 cut-off events. [2023-11-17 15:50:22,878 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2023-11-17 15:50:22,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 526 events. 297/526 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2058 event pairs, 76 based on Foata normal form. 13/449 useless extension candidates. Maximal degree in co-relation 1219. Up to 170 conditions per place. [2023-11-17 15:50:22,880 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 66 selfloop transitions, 15 changer transitions 10/91 dead transitions. [2023-11-17 15:50:22,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 91 transitions, 516 flow [2023-11-17 15:50:22,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:50:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:50:22,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1550 transitions. [2023-11-17 15:50:22,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3475336322869955 [2023-11-17 15:50:22,884 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1550 transitions. [2023-11-17 15:50:22,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1550 transitions. [2023-11-17 15:50:22,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:22,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1550 transitions. [2023-11-17 15:50:22,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 155.0) internal successors, (1550), 10 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:22,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:22,891 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:22,891 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 209 flow. Second operand 10 states and 1550 transitions. [2023-11-17 15:50:22,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 91 transitions, 516 flow [2023-11-17 15:50:22,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 91 transitions, 500 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 15:50:22,893 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 285 flow [2023-11-17 15:50:22,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=285, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-11-17 15:50:22,894 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 30 predicate places. [2023-11-17 15:50:22,894 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 285 flow [2023-11-17 15:50:22,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:22,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:22,894 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:22,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 15:50:23,100 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,SelfDestructingSolverStorable5 [2023-11-17 15:50:23,100 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 15:50:23,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:23,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1901460781, now seen corresponding path program 3 times [2023-11-17 15:50:23,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:23,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161522273] [2023-11-17 15:50:23,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:23,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-17 15:50:23,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:23,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161522273] [2023-11-17 15:50:23,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161522273] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:23,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017386402] [2023-11-17 15:50:23,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:50:23,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:23,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:23,222 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 15:50:23,245 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 15:50:23,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 15:50:23,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:23,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-17 15:50:23,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:23,559 INFO L349 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-11-17 15:50:23,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 53 [2023-11-17 15:50:23,623 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-17 15:50:23,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:23,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017386402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:23,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:23,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 15 [2023-11-17 15:50:23,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58777391] [2023-11-17 15:50:23,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:23,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:50:23,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:23,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:50:23,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:50:23,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 446 [2023-11-17 15:50:23,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 285 flow. Second operand has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:23,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:23,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 446 [2023-11-17 15:50:23,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:23,957 INFO L124 PetriNetUnfolderBase]: 313/552 cut-off events. [2023-11-17 15:50:23,957 INFO L125 PetriNetUnfolderBase]: For 460/460 co-relation queries the response was YES. [2023-11-17 15:50:23,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 552 events. 313/552 cut-off events. For 460/460 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2158 event pairs, 66 based on Foata normal form. 1/484 useless extension candidates. Maximal degree in co-relation 1701. Up to 252 conditions per place. [2023-11-17 15:50:23,960 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 62 selfloop transitions, 18 changer transitions 7/87 dead transitions. [2023-11-17 15:50:23,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 87 transitions, 591 flow [2023-11-17 15:50:23,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:50:23,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:50:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1541 transitions. [2023-11-17 15:50:23,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3455156950672646 [2023-11-17 15:50:23,965 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1541 transitions. [2023-11-17 15:50:23,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1541 transitions. [2023-11-17 15:50:23,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:23,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1541 transitions. [2023-11-17 15:50:23,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 154.1) internal successors, (1541), 10 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:23,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:23,972 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:23,972 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 285 flow. Second operand 10 states and 1541 transitions. [2023-11-17 15:50:23,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 87 transitions, 591 flow [2023-11-17 15:50:23,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 87 transitions, 568 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-17 15:50:23,976 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 363 flow [2023-11-17 15:50:23,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=363, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2023-11-17 15:50:23,977 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 37 predicate places. [2023-11-17 15:50:23,977 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 363 flow [2023-11-17 15:50:23,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:23,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:23,980 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:23,991 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 15:50:24,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:24,188 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 15:50:24,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash -977655337, now seen corresponding path program 4 times [2023-11-17 15:50:24,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:24,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529708] [2023-11-17 15:50:24,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:24,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-17 15:50:24,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:24,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529708] [2023-11-17 15:50:24,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:24,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412384499] [2023-11-17 15:50:24,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:50:24,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:24,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:24,302 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 15:50:24,304 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 15:50:24,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:50:24,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:24,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 15:50:24,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:24,514 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-17 15:50:24,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:24,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412384499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:24,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:24,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2023-11-17 15:50:24,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065657683] [2023-11-17 15:50:24,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:24,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 15:50:24,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:24,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 15:50:24,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:50:24,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 446 [2023-11-17 15:50:24,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 363 flow. Second operand has 8 states, 8 states have (on average 157.375) internal successors, (1259), 8 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:24,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:24,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 446 [2023-11-17 15:50:24,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:24,808 INFO L124 PetriNetUnfolderBase]: 316/567 cut-off events. [2023-11-17 15:50:24,808 INFO L125 PetriNetUnfolderBase]: For 744/744 co-relation queries the response was YES. [2023-11-17 15:50:24,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1939 conditions, 567 events. 316/567 cut-off events. For 744/744 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2309 event pairs, 86 based on Foata normal form. 1/505 useless extension candidates. Maximal degree in co-relation 1900. Up to 182 conditions per place. [2023-11-17 15:50:24,812 INFO L140 encePairwiseOnDemand]: 435/446 looper letters, 74 selfloop transitions, 17 changer transitions 5/96 dead transitions. [2023-11-17 15:50:24,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 96 transitions, 696 flow [2023-11-17 15:50:24,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:50:24,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:50:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1319 transitions. [2023-11-17 15:50:24,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696748878923767 [2023-11-17 15:50:24,815 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1319 transitions. [2023-11-17 15:50:24,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1319 transitions. [2023-11-17 15:50:24,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:24,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1319 transitions. [2023-11-17 15:50:24,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 164.875) internal successors, (1319), 8 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:24,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 446.0) internal successors, (4014), 9 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:24,822 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 446.0) internal successors, (4014), 9 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:24,822 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 363 flow. Second operand 8 states and 1319 transitions. [2023-11-17 15:50:24,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 96 transitions, 696 flow [2023-11-17 15:50:24,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 96 transitions, 648 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-11-17 15:50:24,827 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 391 flow [2023-11-17 15:50:24,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=391, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2023-11-17 15:50:24,829 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2023-11-17 15:50:24,829 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 391 flow [2023-11-17 15:50:24,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 157.375) internal successors, (1259), 8 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:24,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:24,829 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:24,834 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 15:50:25,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:25,034 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 15:50:25,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:25,035 INFO L85 PathProgramCache]: Analyzing trace with hash 241392383, now seen corresponding path program 5 times [2023-11-17 15:50:25,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:25,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094911853] [2023-11-17 15:50:25,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:25,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-17 15:50:25,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:25,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094911853] [2023-11-17 15:50:25,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094911853] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:25,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036254754] [2023-11-17 15:50:25,158 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:50:25,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:25,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:25,159 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 15:50:25,162 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 15:50:25,262 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 15:50:25,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:25,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:50:25,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-17 15:50:25,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:50:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-17 15:50:25,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036254754] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:50:25,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:50:25,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-11-17 15:50:25,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873072176] [2023-11-17 15:50:25,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:50:25,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 15:50:25,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:25,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 15:50:25,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:50:25,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 446 [2023-11-17 15:50:25,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 391 flow. Second operand has 17 states, 17 states have (on average 176.11764705882354) internal successors, (2994), 17 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:25,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:25,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 446 [2023-11-17 15:50:25,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:25,471 INFO L124 PetriNetUnfolderBase]: 269/506 cut-off events. [2023-11-17 15:50:25,471 INFO L125 PetriNetUnfolderBase]: For 1275/1277 co-relation queries the response was YES. [2023-11-17 15:50:25,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1931 conditions, 506 events. 269/506 cut-off events. For 1275/1277 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2042 event pairs, 143 based on Foata normal form. 1/506 useless extension candidates. Maximal degree in co-relation 1890. Up to 477 conditions per place. [2023-11-17 15:50:25,474 INFO L140 encePairwiseOnDemand]: 441/446 looper letters, 45 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2023-11-17 15:50:25,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 58 transitions, 517 flow [2023-11-17 15:50:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:50:25,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:50:25,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1254 transitions. [2023-11-17 15:50:25,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.401665598975016 [2023-11-17 15:50:25,477 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1254 transitions. [2023-11-17 15:50:25,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1254 transitions. [2023-11-17 15:50:25,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:25,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1254 transitions. [2023-11-17 15:50:25,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.14285714285714) internal successors, (1254), 7 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:25,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 446.0) internal successors, (3568), 8 states have internal predecessors, (3568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:25,482 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 446.0) internal successors, (3568), 8 states have internal predecessors, (3568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:25,482 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 391 flow. Second operand 7 states and 1254 transitions. [2023-11-17 15:50:25,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 58 transitions, 517 flow [2023-11-17 15:50:25,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 485 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-17 15:50:25,485 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 405 flow [2023-11-17 15:50:25,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=405, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2023-11-17 15:50:25,486 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 41 predicate places. [2023-11-17 15:50:25,486 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 405 flow [2023-11-17 15:50:25,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 176.11764705882354) internal successors, (2994), 17 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:25,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:25,487 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:25,496 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 15:50:25,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:25,697 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 15:50:25,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:25,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1878316878, now seen corresponding path program 6 times [2023-11-17 15:50:25,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:25,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814462020] [2023-11-17 15:50:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:25,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:26,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:26,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814462020] [2023-11-17 15:50:26,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814462020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:26,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:26,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:50:26,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528100189] [2023-11-17 15:50:26,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:26,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:50:26,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:26,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:50:26,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:50:26,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 446 [2023-11-17 15:50:26,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 405 flow. Second operand has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:26,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:26,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 446 [2023-11-17 15:50:26,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:26,634 INFO L124 PetriNetUnfolderBase]: 323/580 cut-off events. [2023-11-17 15:50:26,635 INFO L125 PetriNetUnfolderBase]: For 1239/1239 co-relation queries the response was YES. [2023-11-17 15:50:26,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2165 conditions, 580 events. 323/580 cut-off events. For 1239/1239 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2331 event pairs, 41 based on Foata normal form. 1/581 useless extension candidates. Maximal degree in co-relation 2077. Up to 151 conditions per place. [2023-11-17 15:50:26,638 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 92 selfloop transitions, 32 changer transitions 15/139 dead transitions. [2023-11-17 15:50:26,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 139 transitions, 1050 flow [2023-11-17 15:50:26,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:50:26,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:50:26,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2322 transitions. [2023-11-17 15:50:26,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.347085201793722 [2023-11-17 15:50:26,642 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2322 transitions. [2023-11-17 15:50:26,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2322 transitions. [2023-11-17 15:50:26,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:26,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2322 transitions. [2023-11-17 15:50:26,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 154.8) internal successors, (2322), 15 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:26,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:26,652 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:26,652 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 405 flow. Second operand 15 states and 2322 transitions. [2023-11-17 15:50:26,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 139 transitions, 1050 flow [2023-11-17 15:50:26,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 139 transitions, 1026 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-17 15:50:26,657 INFO L231 Difference]: Finished difference. Result has 81 places, 72 transitions, 589 flow [2023-11-17 15:50:26,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=589, PETRI_PLACES=81, PETRI_TRANSITIONS=72} [2023-11-17 15:50:26,657 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 55 predicate places. [2023-11-17 15:50:26,657 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 589 flow [2023-11-17 15:50:26,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:26,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:26,658 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:26,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:50:26,658 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 15:50:26,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:26,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1558885398, now seen corresponding path program 7 times [2023-11-17 15:50:26,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:26,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721753590] [2023-11-17 15:50:26,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:26,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:27,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:27,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721753590] [2023-11-17 15:50:27,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721753590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:27,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:27,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:50:27,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130370513] [2023-11-17 15:50:27,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:27,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:50:27,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:27,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:50:27,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:50:27,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 446 [2023-11-17 15:50:27,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 589 flow. Second operand has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:27,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:27,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 446 [2023-11-17 15:50:27,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:27,501 INFO L124 PetriNetUnfolderBase]: 324/587 cut-off events. [2023-11-17 15:50:27,501 INFO L125 PetriNetUnfolderBase]: For 1658/1658 co-relation queries the response was YES. [2023-11-17 15:50:27,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 587 events. 324/587 cut-off events. For 1658/1658 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2421 event pairs, 37 based on Foata normal form. 7/594 useless extension candidates. Maximal degree in co-relation 2402. Up to 155 conditions per place. [2023-11-17 15:50:27,505 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 97 selfloop transitions, 34 changer transitions 6/137 dead transitions. [2023-11-17 15:50:27,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 137 transitions, 1118 flow [2023-11-17 15:50:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:50:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:50:27,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2321 transitions. [2023-11-17 15:50:27,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3469357249626308 [2023-11-17 15:50:27,541 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2321 transitions. [2023-11-17 15:50:27,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2321 transitions. [2023-11-17 15:50:27,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:27,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2321 transitions. [2023-11-17 15:50:27,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 154.73333333333332) internal successors, (2321), 15 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:27,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:27,551 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:27,551 INFO L175 Difference]: Start difference. First operand has 81 places, 72 transitions, 589 flow. Second operand 15 states and 2321 transitions. [2023-11-17 15:50:27,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 137 transitions, 1118 flow [2023-11-17 15:50:27,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 137 transitions, 1059 flow, removed 23 selfloop flow, removed 6 redundant places. [2023-11-17 15:50:27,558 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 653 flow [2023-11-17 15:50:27,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=653, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2023-11-17 15:50:27,558 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 61 predicate places. [2023-11-17 15:50:27,558 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 653 flow [2023-11-17 15:50:27,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:27,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:27,559 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:27,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 15:50:27,559 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 15:50:27,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:27,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1313263738, now seen corresponding path program 8 times [2023-11-17 15:50:27,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:27,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439846154] [2023-11-17 15:50:27,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:27,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:27,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:27,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439846154] [2023-11-17 15:50:27,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439846154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:27,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:27,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:50:27,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194280778] [2023-11-17 15:50:27,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:27,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:50:27,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:27,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:50:27,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:50:27,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 446 [2023-11-17 15:50:27,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 653 flow. Second operand has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:27,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:27,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 446 [2023-11-17 15:50:27,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:28,321 INFO L124 PetriNetUnfolderBase]: 320/573 cut-off events. [2023-11-17 15:50:28,321 INFO L125 PetriNetUnfolderBase]: For 1835/1835 co-relation queries the response was YES. [2023-11-17 15:50:28,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 573 events. 320/573 cut-off events. For 1835/1835 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2295 event pairs, 37 based on Foata normal form. 1/574 useless extension candidates. Maximal degree in co-relation 2465. Up to 151 conditions per place. [2023-11-17 15:50:28,325 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 90 selfloop transitions, 31 changer transitions 9/130 dead transitions. [2023-11-17 15:50:28,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 130 transitions, 1118 flow [2023-11-17 15:50:28,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:50:28,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:50:28,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2165 transitions. [2023-11-17 15:50:28,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34673286354900706 [2023-11-17 15:50:28,330 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2165 transitions. [2023-11-17 15:50:28,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2165 transitions. [2023-11-17 15:50:28,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:28,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2165 transitions. [2023-11-17 15:50:28,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 154.64285714285714) internal successors, (2165), 14 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:28,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:28,340 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:28,340 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 653 flow. Second operand 14 states and 2165 transitions. [2023-11-17 15:50:28,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 130 transitions, 1118 flow [2023-11-17 15:50:28,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 130 transitions, 1032 flow, removed 11 selfloop flow, removed 12 redundant places. [2023-11-17 15:50:28,348 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 612 flow [2023-11-17 15:50:28,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=612, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2023-11-17 15:50:28,349 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 62 predicate places. [2023-11-17 15:50:28,349 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 612 flow [2023-11-17 15:50:28,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:28,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:28,349 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:28,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 15:50:28,350 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 15:50:28,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:28,350 INFO L85 PathProgramCache]: Analyzing trace with hash -222677476, now seen corresponding path program 9 times [2023-11-17 15:50:28,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:28,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195926119] [2023-11-17 15:50:28,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:28,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:28,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:28,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195926119] [2023-11-17 15:50:28,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195926119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:28,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:28,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:50:28,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306566868] [2023-11-17 15:50:28,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:28,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:50:28,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:28,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:50:28,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:50:28,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 446 [2023-11-17 15:50:28,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 612 flow. Second operand has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:28,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:28,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 446 [2023-11-17 15:50:28,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:29,162 INFO L124 PetriNetUnfolderBase]: 388/693 cut-off events. [2023-11-17 15:50:29,163 INFO L125 PetriNetUnfolderBase]: For 1908/1908 co-relation queries the response was YES. [2023-11-17 15:50:29,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2929 conditions, 693 events. 388/693 cut-off events. For 1908/1908 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2973 event pairs, 55 based on Foata normal form. 7/700 useless extension candidates. Maximal degree in co-relation 2880. Up to 193 conditions per place. [2023-11-17 15:50:29,166 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 114 selfloop transitions, 38 changer transitions 6/158 dead transitions. [2023-11-17 15:50:29,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 158 transitions, 1365 flow [2023-11-17 15:50:29,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:50:29,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:50:29,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2331 transitions. [2023-11-17 15:50:29,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484304932735426 [2023-11-17 15:50:29,170 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2331 transitions. [2023-11-17 15:50:29,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2331 transitions. [2023-11-17 15:50:29,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:29,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2331 transitions. [2023-11-17 15:50:29,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 155.4) internal successors, (2331), 15 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:29,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:29,179 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:29,179 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 612 flow. Second operand 15 states and 2331 transitions. [2023-11-17 15:50:29,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 158 transitions, 1365 flow [2023-11-17 15:50:29,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 158 transitions, 1228 flow, removed 13 selfloop flow, removed 14 redundant places. [2023-11-17 15:50:29,185 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 849 flow [2023-11-17 15:50:29,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=849, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2023-11-17 15:50:29,186 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 66 predicate places. [2023-11-17 15:50:29,186 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 849 flow [2023-11-17 15:50:29,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:29,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:29,186 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:29,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 15:50:29,186 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 15:50:29,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:29,187 INFO L85 PathProgramCache]: Analyzing trace with hash 393800708, now seen corresponding path program 10 times [2023-11-17 15:50:29,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:29,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114007868] [2023-11-17 15:50:29,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:29,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:29,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:29,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114007868] [2023-11-17 15:50:29,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114007868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:29,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:29,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:50:29,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724004062] [2023-11-17 15:50:29,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:29,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:50:29,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:29,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:50:29,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:50:29,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 446 [2023-11-17 15:50:29,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 849 flow. Second operand has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:29,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:29,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 446 [2023-11-17 15:50:29,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:29,903 INFO L124 PetriNetUnfolderBase]: 389/698 cut-off events. [2023-11-17 15:50:29,904 INFO L125 PetriNetUnfolderBase]: For 3450/3450 co-relation queries the response was YES. [2023-11-17 15:50:29,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3386 conditions, 698 events. 389/698 cut-off events. For 3450/3450 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3026 event pairs, 55 based on Foata normal form. 1/699 useless extension candidates. Maximal degree in co-relation 3330. Up to 189 conditions per place. [2023-11-17 15:50:29,908 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 112 selfloop transitions, 34 changer transitions 7/153 dead transitions. [2023-11-17 15:50:29,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 153 transitions, 1432 flow [2023-11-17 15:50:29,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:50:29,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:50:29,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2022 transitions. [2023-11-17 15:50:29,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3487409451535012 [2023-11-17 15:50:29,910 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2022 transitions. [2023-11-17 15:50:29,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2022 transitions. [2023-11-17 15:50:29,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:29,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2022 transitions. [2023-11-17 15:50:29,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 155.53846153846155) internal successors, (2022), 13 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:29,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 446.0) internal successors, (6244), 14 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:29,917 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 446.0) internal successors, (6244), 14 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:29,918 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 849 flow. Second operand 13 states and 2022 transitions. [2023-11-17 15:50:29,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 153 transitions, 1432 flow [2023-11-17 15:50:29,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 153 transitions, 1361 flow, removed 26 selfloop flow, removed 6 redundant places. [2023-11-17 15:50:29,930 INFO L231 Difference]: Finished difference. Result has 101 places, 91 transitions, 895 flow [2023-11-17 15:50:29,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=895, PETRI_PLACES=101, PETRI_TRANSITIONS=91} [2023-11-17 15:50:29,930 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 75 predicate places. [2023-11-17 15:50:29,930 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 91 transitions, 895 flow [2023-11-17 15:50:29,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:29,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:29,931 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:29,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 15:50:29,931 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 15:50:29,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:29,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1200140684, now seen corresponding path program 11 times [2023-11-17 15:50:29,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:29,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971332970] [2023-11-17 15:50:29,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:29,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-17 15:50:30,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:30,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971332970] [2023-11-17 15:50:30,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971332970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:30,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750220773] [2023-11-17 15:50:30,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:50:30,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:30,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:30,769 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 15:50:30,770 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 15:50:30,898 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 15:50:30,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:30,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-17 15:50:30,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:31,051 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:31,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:31,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750220773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:31,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:31,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 20 [2023-11-17 15:50:31,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360587272] [2023-11-17 15:50:31,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:31,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:50:31,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:31,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:50:31,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2023-11-17 15:50:31,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 446 [2023-11-17 15:50:31,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 91 transitions, 895 flow. Second operand has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:31,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:31,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 446 [2023-11-17 15:50:31,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:31,352 INFO L124 PetriNetUnfolderBase]: 387/696 cut-off events. [2023-11-17 15:50:31,352 INFO L125 PetriNetUnfolderBase]: For 3270/3270 co-relation queries the response was YES. [2023-11-17 15:50:31,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3388 conditions, 696 events. 387/696 cut-off events. For 3270/3270 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3011 event pairs, 99 based on Foata normal form. 1/697 useless extension candidates. Maximal degree in co-relation 3330. Up to 334 conditions per place. [2023-11-17 15:50:31,356 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 94 selfloop transitions, 25 changer transitions 8/127 dead transitions. [2023-11-17 15:50:31,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 127 transitions, 1276 flow [2023-11-17 15:50:31,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:50:31,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:50:31,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1547 transitions. [2023-11-17 15:50:31,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468609865470852 [2023-11-17 15:50:31,358 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1547 transitions. [2023-11-17 15:50:31,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1547 transitions. [2023-11-17 15:50:31,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:31,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1547 transitions. [2023-11-17 15:50:31,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 154.7) internal successors, (1547), 10 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:31,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:31,363 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:31,363 INFO L175 Difference]: Start difference. First operand has 101 places, 91 transitions, 895 flow. Second operand 10 states and 1547 transitions. [2023-11-17 15:50:31,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 127 transitions, 1276 flow [2023-11-17 15:50:31,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 127 transitions, 1202 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-11-17 15:50:31,375 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 859 flow [2023-11-17 15:50:31,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=859, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2023-11-17 15:50:31,376 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 75 predicate places. [2023-11-17 15:50:31,376 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 859 flow [2023-11-17 15:50:31,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:31,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:31,377 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:31,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-17 15:50:31,582 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 15:50:31,582 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 15:50:31,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:31,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1379456136, now seen corresponding path program 12 times [2023-11-17 15:50:31,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:31,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402662354] [2023-11-17 15:50:31,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:31,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:32,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:32,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402662354] [2023-11-17 15:50:32,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402662354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:32,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:32,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:50:32,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377614883] [2023-11-17 15:50:32,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:32,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:50:32,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:32,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:50:32,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:50:32,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 446 [2023-11-17 15:50:32,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 859 flow. Second operand has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:32,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:32,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 446 [2023-11-17 15:50:32,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:32,528 INFO L124 PetriNetUnfolderBase]: 441/782 cut-off events. [2023-11-17 15:50:32,529 INFO L125 PetriNetUnfolderBase]: For 3688/3688 co-relation queries the response was YES. [2023-11-17 15:50:32,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3700 conditions, 782 events. 441/782 cut-off events. For 3688/3688 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3496 event pairs, 41 based on Foata normal form. 1/783 useless extension candidates. Maximal degree in co-relation 3645. Up to 199 conditions per place. [2023-11-17 15:50:32,534 INFO L140 encePairwiseOnDemand]: 432/446 looper letters, 118 selfloop transitions, 63 changer transitions 7/188 dead transitions. [2023-11-17 15:50:32,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 188 transitions, 1710 flow [2023-11-17 15:50:32,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 15:50:32,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 15:50:32,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3086 transitions. [2023-11-17 15:50:32,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3459641255605381 [2023-11-17 15:50:32,539 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3086 transitions. [2023-11-17 15:50:32,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3086 transitions. [2023-11-17 15:50:32,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:32,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3086 transitions. [2023-11-17 15:50:32,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.3) internal successors, (3086), 20 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:32,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 446.0) internal successors, (9366), 21 states have internal predecessors, (9366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:32,551 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 446.0) internal successors, (9366), 21 states have internal predecessors, (9366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:32,551 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 859 flow. Second operand 20 states and 3086 transitions. [2023-11-17 15:50:32,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 188 transitions, 1710 flow [2023-11-17 15:50:32,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 188 transitions, 1631 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-11-17 15:50:32,563 INFO L231 Difference]: Finished difference. Result has 115 places, 117 transitions, 1180 flow [2023-11-17 15:50:32,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1180, PETRI_PLACES=115, PETRI_TRANSITIONS=117} [2023-11-17 15:50:32,564 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 89 predicate places. [2023-11-17 15:50:32,564 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 1180 flow [2023-11-17 15:50:32,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:32,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:32,564 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:32,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 15:50:32,565 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 15:50:32,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:32,565 INFO L85 PathProgramCache]: Analyzing trace with hash -684775078, now seen corresponding path program 13 times [2023-11-17 15:50:32,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:32,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950615937] [2023-11-17 15:50:32,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:32,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:33,353 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-17 15:50:33,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:33,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950615937] [2023-11-17 15:50:33,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950615937] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:33,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600504535] [2023-11-17 15:50:33,354 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:50:33,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:33,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:33,355 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 15:50:33,358 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 15:50:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:33,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:50:33,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:33,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:50:33,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:50:33,736 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 15:50:33,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 20 [2023-11-17 15:50:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:33,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:33,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600504535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:33,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:33,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 25 [2023-11-17 15:50:33,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235390909] [2023-11-17 15:50:33,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:33,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:50:33,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:33,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:50:33,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2023-11-17 15:50:33,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 446 [2023-11-17 15:50:33,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 1180 flow. Second operand has 12 states, 12 states have (on average 139.58333333333334) internal successors, (1675), 12 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:33,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:33,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 446 [2023-11-17 15:50:33,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:34,299 INFO L124 PetriNetUnfolderBase]: 475/864 cut-off events. [2023-11-17 15:50:34,300 INFO L125 PetriNetUnfolderBase]: For 4362/4362 co-relation queries the response was YES. [2023-11-17 15:50:34,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4430 conditions, 864 events. 475/864 cut-off events. For 4362/4362 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4058 event pairs, 117 based on Foata normal form. 22/886 useless extension candidates. Maximal degree in co-relation 4362. Up to 282 conditions per place. [2023-11-17 15:50:34,305 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 124 selfloop transitions, 39 changer transitions 6/169 dead transitions. [2023-11-17 15:50:34,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 169 transitions, 1864 flow [2023-11-17 15:50:34,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:50:34,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:50:34,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1459 transitions. [2023-11-17 15:50:34,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3271300448430493 [2023-11-17 15:50:34,307 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1459 transitions. [2023-11-17 15:50:34,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1459 transitions. [2023-11-17 15:50:34,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:34,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1459 transitions. [2023-11-17 15:50:34,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 145.9) internal successors, (1459), 10 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:34,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:34,312 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:34,312 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 1180 flow. Second operand 10 states and 1459 transitions. [2023-11-17 15:50:34,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 169 transitions, 1864 flow [2023-11-17 15:50:34,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 169 transitions, 1732 flow, removed 8 selfloop flow, removed 11 redundant places. [2023-11-17 15:50:34,326 INFO L231 Difference]: Finished difference. Result has 113 places, 122 transitions, 1263 flow [2023-11-17 15:50:34,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1263, PETRI_PLACES=113, PETRI_TRANSITIONS=122} [2023-11-17 15:50:34,326 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 87 predicate places. [2023-11-17 15:50:34,326 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 122 transitions, 1263 flow [2023-11-17 15:50:34,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 139.58333333333334) internal successors, (1675), 12 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:34,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:34,327 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:34,338 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 15:50:34,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:34,533 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 15:50:34,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:34,533 INFO L85 PathProgramCache]: Analyzing trace with hash -484799328, now seen corresponding path program 14 times [2023-11-17 15:50:34,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:34,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718451327] [2023-11-17 15:50:34,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:34,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:35,503 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 15:50:35,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:35,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718451327] [2023-11-17 15:50:35,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718451327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:35,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173165681] [2023-11-17 15:50:35,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:50:35,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:35,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:35,505 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 15:50:35,532 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 15:50:35,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 15:50:35,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:35,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-17 15:50:35,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:35,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-11-17 15:50:35,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 15:50:35,841 INFO L349 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-11-17 15:50:35,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 53 [2023-11-17 15:50:35,902 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:35,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:35,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173165681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:35,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:35,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 22 [2023-11-17 15:50:35,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4635714] [2023-11-17 15:50:35,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:35,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:50:35,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:35,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:50:35,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2023-11-17 15:50:35,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 446 [2023-11-17 15:50:35,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 122 transitions, 1263 flow. Second operand has 12 states, 12 states have (on average 143.58333333333334) internal successors, (1723), 12 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:35,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:35,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 446 [2023-11-17 15:50:35,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:36,362 INFO L124 PetriNetUnfolderBase]: 473/862 cut-off events. [2023-11-17 15:50:36,362 INFO L125 PetriNetUnfolderBase]: For 4504/4504 co-relation queries the response was YES. [2023-11-17 15:50:36,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4500 conditions, 862 events. 473/862 cut-off events. For 4504/4504 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4016 event pairs, 114 based on Foata normal form. 1/863 useless extension candidates. Maximal degree in co-relation 4429. Up to 364 conditions per place. [2023-11-17 15:50:36,368 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 93 selfloop transitions, 52 changer transitions 7/152 dead transitions. [2023-11-17 15:50:36,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 152 transitions, 1751 flow [2023-11-17 15:50:36,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:50:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:50:36,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1629 transitions. [2023-11-17 15:50:36,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3320423970648186 [2023-11-17 15:50:36,371 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1629 transitions. [2023-11-17 15:50:36,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1629 transitions. [2023-11-17 15:50:36,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:36,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1629 transitions. [2023-11-17 15:50:36,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 148.0909090909091) internal successors, (1629), 11 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:36,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 446.0) internal successors, (5352), 12 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:36,378 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 446.0) internal successors, (5352), 12 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:36,378 INFO L175 Difference]: Start difference. First operand has 113 places, 122 transitions, 1263 flow. Second operand 11 states and 1629 transitions. [2023-11-17 15:50:36,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 152 transitions, 1751 flow [2023-11-17 15:50:36,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 152 transitions, 1707 flow, removed 15 selfloop flow, removed 5 redundant places. [2023-11-17 15:50:36,396 INFO L231 Difference]: Finished difference. Result has 121 places, 128 transitions, 1459 flow [2023-11-17 15:50:36,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1459, PETRI_PLACES=121, PETRI_TRANSITIONS=128} [2023-11-17 15:50:36,397 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 95 predicate places. [2023-11-17 15:50:36,397 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 128 transitions, 1459 flow [2023-11-17 15:50:36,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 143.58333333333334) internal successors, (1723), 12 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:36,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:36,397 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:36,417 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 15:50:36,602 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,SelfDestructingSolverStorable17 [2023-11-17 15:50:36,602 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 15:50:36,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:36,602 INFO L85 PathProgramCache]: Analyzing trace with hash -153612412, now seen corresponding path program 15 times [2023-11-17 15:50:36,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:36,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862723122] [2023-11-17 15:50:36,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:36,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:37,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:37,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862723122] [2023-11-17 15:50:37,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862723122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:37,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:37,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 15:50:37,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972136171] [2023-11-17 15:50:37,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:37,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:50:37,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:37,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:50:37,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:50:37,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 446 [2023-11-17 15:50:37,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 128 transitions, 1459 flow. Second operand has 12 states, 12 states have (on average 139.58333333333334) internal successors, (1675), 12 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:37,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:37,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 446 [2023-11-17 15:50:37,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:37,516 INFO L124 PetriNetUnfolderBase]: 473/864 cut-off events. [2023-11-17 15:50:37,516 INFO L125 PetriNetUnfolderBase]: For 4929/4929 co-relation queries the response was YES. [2023-11-17 15:50:37,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 864 events. 473/864 cut-off events. For 4929/4929 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4054 event pairs, 74 based on Foata normal form. 1/865 useless extension candidates. Maximal degree in co-relation 4648. Up to 215 conditions per place. [2023-11-17 15:50:37,523 INFO L140 encePairwiseOnDemand]: 435/446 looper letters, 112 selfloop transitions, 67 changer transitions 11/190 dead transitions. [2023-11-17 15:50:37,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 190 transitions, 2193 flow [2023-11-17 15:50:37,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:50:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:50:37,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2039 transitions. [2023-11-17 15:50:37,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32655349135169764 [2023-11-17 15:50:37,526 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2039 transitions. [2023-11-17 15:50:37,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2039 transitions. [2023-11-17 15:50:37,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:37,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2039 transitions. [2023-11-17 15:50:37,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 145.64285714285714) internal successors, (2039), 14 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:37,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:37,533 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:37,533 INFO L175 Difference]: Start difference. First operand has 121 places, 128 transitions, 1459 flow. Second operand 14 states and 2039 transitions. [2023-11-17 15:50:37,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 190 transitions, 2193 flow [2023-11-17 15:50:37,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 190 transitions, 2067 flow, removed 21 selfloop flow, removed 8 redundant places. [2023-11-17 15:50:37,550 INFO L231 Difference]: Finished difference. Result has 127 places, 134 transitions, 1565 flow [2023-11-17 15:50:37,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1565, PETRI_PLACES=127, PETRI_TRANSITIONS=134} [2023-11-17 15:50:37,550 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 101 predicate places. [2023-11-17 15:50:37,550 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 134 transitions, 1565 flow [2023-11-17 15:50:37,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 139.58333333333334) internal successors, (1675), 12 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:37,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:37,551 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:37,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-17 15:50:37,551 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 15:50:37,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:37,551 INFO L85 PathProgramCache]: Analyzing trace with hash 727281410, now seen corresponding path program 16 times [2023-11-17 15:50:37,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:37,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089784178] [2023-11-17 15:50:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:37,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:37,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:37,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089784178] [2023-11-17 15:50:37,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089784178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:37,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:37,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 15:50:37,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108769015] [2023-11-17 15:50:37,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:37,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:50:37,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:37,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:50:37,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:50:37,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 446 [2023-11-17 15:50:37,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 134 transitions, 1565 flow. Second operand has 12 states, 12 states have (on average 143.58333333333334) internal successors, (1723), 12 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:37,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:37,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 446 [2023-11-17 15:50:37,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:38,391 INFO L124 PetriNetUnfolderBase]: 472/873 cut-off events. [2023-11-17 15:50:38,391 INFO L125 PetriNetUnfolderBase]: For 4858/4858 co-relation queries the response was YES. [2023-11-17 15:50:38,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4839 conditions, 873 events. 472/873 cut-off events. For 4858/4858 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4180 event pairs, 73 based on Foata normal form. 1/874 useless extension candidates. Maximal degree in co-relation 4765. Up to 215 conditions per place. [2023-11-17 15:50:38,403 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 110 selfloop transitions, 68 changer transitions 14/192 dead transitions. [2023-11-17 15:50:38,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 192 transitions, 2256 flow [2023-11-17 15:50:38,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:50:38,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:50:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2236 transitions. [2023-11-17 15:50:38,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33423019431988044 [2023-11-17 15:50:38,405 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2236 transitions. [2023-11-17 15:50:38,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2236 transitions. [2023-11-17 15:50:38,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:38,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2236 transitions. [2023-11-17 15:50:38,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 149.06666666666666) internal successors, (2236), 15 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:38,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:38,412 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:38,412 INFO L175 Difference]: Start difference. First operand has 127 places, 134 transitions, 1565 flow. Second operand 15 states and 2236 transitions. [2023-11-17 15:50:38,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 192 transitions, 2256 flow [2023-11-17 15:50:38,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 192 transitions, 2177 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-11-17 15:50:38,431 INFO L231 Difference]: Finished difference. Result has 134 places, 135 transitions, 1660 flow [2023-11-17 15:50:38,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1660, PETRI_PLACES=134, PETRI_TRANSITIONS=135} [2023-11-17 15:50:38,431 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 108 predicate places. [2023-11-17 15:50:38,431 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 135 transitions, 1660 flow [2023-11-17 15:50:38,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 143.58333333333334) internal successors, (1723), 12 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:38,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:38,432 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:38,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-17 15:50:38,433 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 15:50:38,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:38,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2107593238, now seen corresponding path program 17 times [2023-11-17 15:50:38,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:38,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729991254] [2023-11-17 15:50:38,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:38,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:38,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:38,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729991254] [2023-11-17 15:50:38,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729991254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:38,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:38,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 15:50:38,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634147658] [2023-11-17 15:50:38,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:38,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:50:38,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:38,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:50:38,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:50:38,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 446 [2023-11-17 15:50:38,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 135 transitions, 1660 flow. Second operand has 12 states, 12 states have (on average 139.58333333333334) internal successors, (1675), 12 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:38,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:38,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 446 [2023-11-17 15:50:38,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:39,348 INFO L124 PetriNetUnfolderBase]: 465/849 cut-off events. [2023-11-17 15:50:39,349 INFO L125 PetriNetUnfolderBase]: For 5220/5220 co-relation queries the response was YES. [2023-11-17 15:50:39,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 849 events. 465/849 cut-off events. For 5220/5220 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3945 event pairs, 70 based on Foata normal form. 1/850 useless extension candidates. Maximal degree in co-relation 4784. Up to 215 conditions per place. [2023-11-17 15:50:39,355 INFO L140 encePairwiseOnDemand]: 435/446 looper letters, 109 selfloop transitions, 65 changer transitions 14/188 dead transitions. [2023-11-17 15:50:39,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 188 transitions, 2282 flow [2023-11-17 15:50:39,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:50:39,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:50:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2038 transitions. [2023-11-17 15:50:39,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32639333760409994 [2023-11-17 15:50:39,359 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2038 transitions. [2023-11-17 15:50:39,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2038 transitions. [2023-11-17 15:50:39,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:39,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2038 transitions. [2023-11-17 15:50:39,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 145.57142857142858) internal successors, (2038), 14 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:39,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:39,366 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:39,366 INFO L175 Difference]: Start difference. First operand has 134 places, 135 transitions, 1660 flow. Second operand 14 states and 2038 transitions. [2023-11-17 15:50:39,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 188 transitions, 2282 flow [2023-11-17 15:50:39,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 188 transitions, 2183 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-11-17 15:50:39,386 INFO L231 Difference]: Finished difference. Result has 135 places, 131 transitions, 1647 flow [2023-11-17 15:50:39,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1647, PETRI_PLACES=135, PETRI_TRANSITIONS=131} [2023-11-17 15:50:39,387 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 109 predicate places. [2023-11-17 15:50:39,387 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 131 transitions, 1647 flow [2023-11-17 15:50:39,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 139.58333333333334) internal successors, (1675), 12 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:39,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:39,387 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:39,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-17 15:50:39,388 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 15:50:39,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:39,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2094797492, now seen corresponding path program 18 times [2023-11-17 15:50:39,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:39,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22438367] [2023-11-17 15:50:39,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:39,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:39,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:39,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22438367] [2023-11-17 15:50:39,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22438367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:39,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:39,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 15:50:39,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256650669] [2023-11-17 15:50:39,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:39,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:50:39,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:39,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:50:39,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:50:39,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 446 [2023-11-17 15:50:39,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 131 transitions, 1647 flow. Second operand has 12 states, 12 states have (on average 143.58333333333334) internal successors, (1723), 12 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:39,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:39,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 446 [2023-11-17 15:50:39,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:40,215 INFO L124 PetriNetUnfolderBase]: 453/828 cut-off events. [2023-11-17 15:50:40,215 INFO L125 PetriNetUnfolderBase]: For 5288/5288 co-relation queries the response was YES. [2023-11-17 15:50:40,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4818 conditions, 828 events. 453/828 cut-off events. For 5288/5288 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3810 event pairs, 59 based on Foata normal form. 7/835 useless extension candidates. Maximal degree in co-relation 4748. Up to 222 conditions per place. [2023-11-17 15:50:40,220 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 101 selfloop transitions, 74 changer transitions 6/181 dead transitions. [2023-11-17 15:50:40,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 181 transitions, 2211 flow [2023-11-17 15:50:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 15:50:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 15:50:40,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2382 transitions. [2023-11-17 15:50:40,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3338004484304933 [2023-11-17 15:50:40,224 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2382 transitions. [2023-11-17 15:50:40,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2382 transitions. [2023-11-17 15:50:40,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:40,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2382 transitions. [2023-11-17 15:50:40,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 148.875) internal successors, (2382), 16 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:40,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 446.0) internal successors, (7582), 17 states have internal predecessors, (7582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:40,233 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 446.0) internal successors, (7582), 17 states have internal predecessors, (7582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:40,234 INFO L175 Difference]: Start difference. First operand has 135 places, 131 transitions, 1647 flow. Second operand 16 states and 2382 transitions. [2023-11-17 15:50:40,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 181 transitions, 2211 flow [2023-11-17 15:50:40,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 181 transitions, 2047 flow, removed 10 selfloop flow, removed 13 redundant places. [2023-11-17 15:50:40,253 INFO L231 Difference]: Finished difference. Result has 136 places, 131 transitions, 1640 flow [2023-11-17 15:50:40,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1640, PETRI_PLACES=136, PETRI_TRANSITIONS=131} [2023-11-17 15:50:40,253 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 110 predicate places. [2023-11-17 15:50:40,253 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 131 transitions, 1640 flow [2023-11-17 15:50:40,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 143.58333333333334) internal successors, (1723), 12 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:40,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:40,254 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:40,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-17 15:50:40,254 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 15:50:40,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:40,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1928744836, now seen corresponding path program 19 times [2023-11-17 15:50:40,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:40,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890750152] [2023-11-17 15:50:40,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:40,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:40,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:40,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890750152] [2023-11-17 15:50:40,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890750152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:40,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:40,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:50:40,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039489170] [2023-11-17 15:50:40,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:40,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:50:40,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:40,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:50:40,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:50:40,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 446 [2023-11-17 15:50:40,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 131 transitions, 1640 flow. Second operand has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:40,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:40,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 446 [2023-11-17 15:50:40,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:41,098 INFO L124 PetriNetUnfolderBase]: 563/1022 cut-off events. [2023-11-17 15:50:41,098 INFO L125 PetriNetUnfolderBase]: For 6268/6268 co-relation queries the response was YES. [2023-11-17 15:50:41,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 1022 events. 563/1022 cut-off events. For 6268/6268 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4902 event pairs, 88 based on Foata normal form. 7/1029 useless extension candidates. Maximal degree in co-relation 5824. Up to 322 conditions per place. [2023-11-17 15:50:41,109 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 147 selfloop transitions, 67 changer transitions 6/220 dead transitions. [2023-11-17 15:50:41,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 220 transitions, 2751 flow [2023-11-17 15:50:41,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:50:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:50:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2323 transitions. [2023-11-17 15:50:41,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34723467862481316 [2023-11-17 15:50:41,137 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2323 transitions. [2023-11-17 15:50:41,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2323 transitions. [2023-11-17 15:50:41,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:41,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2323 transitions. [2023-11-17 15:50:41,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 154.86666666666667) internal successors, (2323), 15 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:41,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:41,143 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:41,143 INFO L175 Difference]: Start difference. First operand has 136 places, 131 transitions, 1640 flow. Second operand 15 states and 2323 transitions. [2023-11-17 15:50:41,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 220 transitions, 2751 flow [2023-11-17 15:50:41,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 220 transitions, 2552 flow, removed 5 selfloop flow, removed 13 redundant places. [2023-11-17 15:50:41,165 INFO L231 Difference]: Finished difference. Result has 145 places, 157 transitions, 2112 flow [2023-11-17 15:50:41,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2112, PETRI_PLACES=145, PETRI_TRANSITIONS=157} [2023-11-17 15:50:41,166 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 119 predicate places. [2023-11-17 15:50:41,166 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 157 transitions, 2112 flow [2023-11-17 15:50:41,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:41,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:41,166 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:41,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-17 15:50:41,167 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 15:50:41,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:41,167 INFO L85 PathProgramCache]: Analyzing trace with hash 875749772, now seen corresponding path program 20 times [2023-11-17 15:50:41,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:41,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570272501] [2023-11-17 15:50:41,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:41,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:41,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:41,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570272501] [2023-11-17 15:50:41,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570272501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:41,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:41,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 15:50:41,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543071123] [2023-11-17 15:50:41,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:41,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:50:41,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:41,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:50:41,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:50:41,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 446 [2023-11-17 15:50:41,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 157 transitions, 2112 flow. Second operand has 12 states, 12 states have (on average 143.58333333333334) internal successors, (1723), 12 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:41,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:41,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 446 [2023-11-17 15:50:41,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:42,089 INFO L124 PetriNetUnfolderBase]: 559/1008 cut-off events. [2023-11-17 15:50:42,089 INFO L125 PetriNetUnfolderBase]: For 7009/7009 co-relation queries the response was YES. [2023-11-17 15:50:42,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6115 conditions, 1008 events. 559/1008 cut-off events. For 7009/7009 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4805 event pairs, 78 based on Foata normal form. 1/1009 useless extension candidates. Maximal degree in co-relation 6031. Up to 281 conditions per place. [2023-11-17 15:50:42,096 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 98 selfloop transitions, 89 changer transitions 11/198 dead transitions. [2023-11-17 15:50:42,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 198 transitions, 2664 flow [2023-11-17 15:50:42,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:50:42,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:50:42,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2231 transitions. [2023-11-17 15:50:42,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3334828101644245 [2023-11-17 15:50:42,104 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2231 transitions. [2023-11-17 15:50:42,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2231 transitions. [2023-11-17 15:50:42,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:42,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2231 transitions. [2023-11-17 15:50:42,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 148.73333333333332) internal successors, (2231), 15 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:42,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:42,115 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:42,116 INFO L175 Difference]: Start difference. First operand has 145 places, 157 transitions, 2112 flow. Second operand 15 states and 2231 transitions. [2023-11-17 15:50:42,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 198 transitions, 2664 flow [2023-11-17 15:50:42,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 198 transitions, 2534 flow, removed 63 selfloop flow, removed 5 redundant places. [2023-11-17 15:50:42,170 INFO L231 Difference]: Finished difference. Result has 154 places, 154 transitions, 2139 flow [2023-11-17 15:50:42,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2139, PETRI_PLACES=154, PETRI_TRANSITIONS=154} [2023-11-17 15:50:42,170 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 128 predicate places. [2023-11-17 15:50:42,171 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 154 transitions, 2139 flow [2023-11-17 15:50:42,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 143.58333333333334) internal successors, (1723), 12 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:42,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:42,171 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:42,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-17 15:50:42,171 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 15:50:42,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:42,171 INFO L85 PathProgramCache]: Analyzing trace with hash -266609338, now seen corresponding path program 21 times [2023-11-17 15:50:42,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:42,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230540022] [2023-11-17 15:50:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:42,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:42,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:42,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230540022] [2023-11-17 15:50:42,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230540022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:42,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:42,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:50:42,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114098384] [2023-11-17 15:50:42,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:42,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:50:42,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:42,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:50:42,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:50:42,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 446 [2023-11-17 15:50:42,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 154 transitions, 2139 flow. Second operand has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:42,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:42,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 446 [2023-11-17 15:50:42,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:42,860 INFO L124 PetriNetUnfolderBase]: 567/1042 cut-off events. [2023-11-17 15:50:42,860 INFO L125 PetriNetUnfolderBase]: For 6356/6356 co-relation queries the response was YES. [2023-11-17 15:50:42,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6113 conditions, 1042 events. 567/1042 cut-off events. For 6356/6356 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5109 event pairs, 86 based on Foata normal form. 1/1043 useless extension candidates. Maximal degree in co-relation 6025. Up to 322 conditions per place. [2023-11-17 15:50:42,867 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 157 selfloop transitions, 62 changer transitions 7/226 dead transitions. [2023-11-17 15:50:42,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 226 transitions, 2989 flow [2023-11-17 15:50:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:50:42,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:50:42,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2031 transitions. [2023-11-17 15:50:42,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3502932045532942 [2023-11-17 15:50:42,887 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2031 transitions. [2023-11-17 15:50:42,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2031 transitions. [2023-11-17 15:50:42,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:42,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2031 transitions. [2023-11-17 15:50:42,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 156.23076923076923) internal successors, (2031), 13 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:42,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 446.0) internal successors, (6244), 14 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:42,897 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 446.0) internal successors, (6244), 14 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:42,897 INFO L175 Difference]: Start difference. First operand has 154 places, 154 transitions, 2139 flow. Second operand 13 states and 2031 transitions. [2023-11-17 15:50:42,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 226 transitions, 2989 flow [2023-11-17 15:50:42,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 226 transitions, 2748 flow, removed 7 selfloop flow, removed 15 redundant places. [2023-11-17 15:50:42,922 INFO L231 Difference]: Finished difference. Result has 150 places, 158 transitions, 2134 flow [2023-11-17 15:50:42,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2134, PETRI_PLACES=150, PETRI_TRANSITIONS=158} [2023-11-17 15:50:42,922 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 124 predicate places. [2023-11-17 15:50:42,922 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 158 transitions, 2134 flow [2023-11-17 15:50:42,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:42,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:42,923 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:42,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-17 15:50:42,923 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 15:50:42,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:42,924 INFO L85 PathProgramCache]: Analyzing trace with hash -943404300, now seen corresponding path program 22 times [2023-11-17 15:50:42,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:42,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475017990] [2023-11-17 15:50:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:42,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:43,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:43,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475017990] [2023-11-17 15:50:43,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475017990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:43,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:43,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:50:43,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411639873] [2023-11-17 15:50:43,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:43,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:50:43,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:43,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:50:43,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:50:43,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 446 [2023-11-17 15:50:43,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 158 transitions, 2134 flow. Second operand has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:43,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:43,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 446 [2023-11-17 15:50:43,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:43,627 INFO L124 PetriNetUnfolderBase]: 565/1040 cut-off events. [2023-11-17 15:50:43,628 INFO L125 PetriNetUnfolderBase]: For 6147/6147 co-relation queries the response was YES. [2023-11-17 15:50:43,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6014 conditions, 1040 events. 565/1040 cut-off events. For 6147/6147 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5085 event pairs, 86 based on Foata normal form. 1/1041 useless extension candidates. Maximal degree in co-relation 5924. Up to 322 conditions per place. [2023-11-17 15:50:43,634 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 144 selfloop transitions, 66 changer transitions 9/219 dead transitions. [2023-11-17 15:50:43,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 219 transitions, 2799 flow [2023-11-17 15:50:43,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:50:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:50:43,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2320 transitions. [2023-11-17 15:50:43,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34678624813153963 [2023-11-17 15:50:43,637 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2320 transitions. [2023-11-17 15:50:43,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2320 transitions. [2023-11-17 15:50:43,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:43,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2320 transitions. [2023-11-17 15:50:43,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 154.66666666666666) internal successors, (2320), 15 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:43,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:43,643 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:43,643 INFO L175 Difference]: Start difference. First operand has 150 places, 158 transitions, 2134 flow. Second operand 15 states and 2320 transitions. [2023-11-17 15:50:43,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 219 transitions, 2799 flow [2023-11-17 15:50:43,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 219 transitions, 2672 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-11-17 15:50:43,668 INFO L231 Difference]: Finished difference. Result has 155 places, 156 transitions, 2112 flow [2023-11-17 15:50:43,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2112, PETRI_PLACES=155, PETRI_TRANSITIONS=156} [2023-11-17 15:50:43,668 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 129 predicate places. [2023-11-17 15:50:43,669 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 156 transitions, 2112 flow [2023-11-17 15:50:43,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:43,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:43,669 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:43,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-17 15:50:43,669 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 15:50:43,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:43,669 INFO L85 PathProgramCache]: Analyzing trace with hash 771966176, now seen corresponding path program 23 times [2023-11-17 15:50:43,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:43,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961623450] [2023-11-17 15:50:43,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:43,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:43,944 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:43,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:43,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961623450] [2023-11-17 15:50:43,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961623450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:43,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:43,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:50:43,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159610446] [2023-11-17 15:50:43,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:43,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:50:43,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:43,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:50:43,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:50:43,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 446 [2023-11-17 15:50:43,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 156 transitions, 2112 flow. Second operand has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:43,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:43,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 446 [2023-11-17 15:50:43,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:44,423 INFO L124 PetriNetUnfolderBase]: 591/1068 cut-off events. [2023-11-17 15:50:44,423 INFO L125 PetriNetUnfolderBase]: For 6486/6486 co-relation queries the response was YES. [2023-11-17 15:50:44,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6217 conditions, 1068 events. 591/1068 cut-off events. For 6486/6486 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5156 event pairs, 86 based on Foata normal form. 1/1069 useless extension candidates. Maximal degree in co-relation 6130. Up to 334 conditions per place. [2023-11-17 15:50:44,430 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 150 selfloop transitions, 75 changer transitions 7/232 dead transitions. [2023-11-17 15:50:44,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 232 transitions, 2987 flow [2023-11-17 15:50:44,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 15:50:44,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 15:50:44,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2624 transitions. [2023-11-17 15:50:44,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34608282774993404 [2023-11-17 15:50:44,432 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2624 transitions. [2023-11-17 15:50:44,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2624 transitions. [2023-11-17 15:50:44,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:44,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2624 transitions. [2023-11-17 15:50:44,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 154.35294117647058) internal successors, (2624), 17 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:44,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 446.0) internal successors, (8028), 18 states have internal predecessors, (8028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:44,439 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 446.0) internal successors, (8028), 18 states have internal predecessors, (8028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:44,439 INFO L175 Difference]: Start difference. First operand has 155 places, 156 transitions, 2112 flow. Second operand 17 states and 2624 transitions. [2023-11-17 15:50:44,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 232 transitions, 2987 flow [2023-11-17 15:50:44,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 232 transitions, 2870 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-11-17 15:50:44,466 INFO L231 Difference]: Finished difference. Result has 165 places, 166 transitions, 2353 flow [2023-11-17 15:50:44,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=2012, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2353, PETRI_PLACES=165, PETRI_TRANSITIONS=166} [2023-11-17 15:50:44,466 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 139 predicate places. [2023-11-17 15:50:44,466 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 166 transitions, 2353 flow [2023-11-17 15:50:44,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:44,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:44,467 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:44,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-17 15:50:44,467 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 15:50:44,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:44,467 INFO L85 PathProgramCache]: Analyzing trace with hash -485298702, now seen corresponding path program 24 times [2023-11-17 15:50:44,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:44,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899074940] [2023-11-17 15:50:44,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:44,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:44,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:44,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899074940] [2023-11-17 15:50:44,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899074940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:44,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:44,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:50:44,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329869212] [2023-11-17 15:50:44,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:44,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:50:44,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:44,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:50:44,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:50:44,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 446 [2023-11-17 15:50:44,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 166 transitions, 2353 flow. Second operand has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:44,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:44,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 446 [2023-11-17 15:50:44,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:45,157 INFO L124 PetriNetUnfolderBase]: 589/1058 cut-off events. [2023-11-17 15:50:45,157 INFO L125 PetriNetUnfolderBase]: For 6860/6860 co-relation queries the response was YES. [2023-11-17 15:50:45,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6449 conditions, 1058 events. 589/1058 cut-off events. For 6860/6860 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5077 event pairs, 90 based on Foata normal form. 1/1059 useless extension candidates. Maximal degree in co-relation 6364. Up to 343 conditions per place. [2023-11-17 15:50:45,162 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 148 selfloop transitions, 66 changer transitions 7/221 dead transitions. [2023-11-17 15:50:45,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 221 transitions, 3022 flow [2023-11-17 15:50:45,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:50:45,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:50:45,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2007 transitions. [2023-11-17 15:50:45,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2023-11-17 15:50:45,174 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2007 transitions. [2023-11-17 15:50:45,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2007 transitions. [2023-11-17 15:50:45,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:45,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2007 transitions. [2023-11-17 15:50:45,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 154.3846153846154) internal successors, (2007), 13 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:45,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 446.0) internal successors, (6244), 14 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:45,179 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 446.0) internal successors, (6244), 14 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:45,179 INFO L175 Difference]: Start difference. First operand has 165 places, 166 transitions, 2353 flow. Second operand 13 states and 2007 transitions. [2023-11-17 15:50:45,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 221 transitions, 3022 flow [2023-11-17 15:50:45,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 221 transitions, 2925 flow, removed 7 selfloop flow, removed 10 redundant places. [2023-11-17 15:50:45,205 INFO L231 Difference]: Finished difference. Result has 168 places, 166 transitions, 2404 flow [2023-11-17 15:50:45,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2404, PETRI_PLACES=168, PETRI_TRANSITIONS=166} [2023-11-17 15:50:45,209 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 142 predicate places. [2023-11-17 15:50:45,209 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 166 transitions, 2404 flow [2023-11-17 15:50:45,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 148.72727272727272) internal successors, (1636), 11 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:45,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:45,209 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:45,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-17 15:50:45,210 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 15:50:45,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:45,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1458108702, now seen corresponding path program 1 times [2023-11-17 15:50:45,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:45,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786929602] [2023-11-17 15:50:45,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:45,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:45,439 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:45,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:45,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786929602] [2023-11-17 15:50:45,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786929602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:45,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:45,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 15:50:45,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319657102] [2023-11-17 15:50:45,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:45,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 15:50:45,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:45,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 15:50:45,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:50:45,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 446 [2023-11-17 15:50:45,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 166 transitions, 2404 flow. Second operand has 9 states, 9 states have (on average 161.22222222222223) internal successors, (1451), 9 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:45,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:45,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 446 [2023-11-17 15:50:45,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:45,697 INFO L124 PetriNetUnfolderBase]: 597/1071 cut-off events. [2023-11-17 15:50:45,698 INFO L125 PetriNetUnfolderBase]: For 7307/7307 co-relation queries the response was YES. [2023-11-17 15:50:45,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6661 conditions, 1071 events. 597/1071 cut-off events. For 7307/7307 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5119 event pairs, 139 based on Foata normal form. 4/1075 useless extension candidates. Maximal degree in co-relation 6573. Up to 456 conditions per place. [2023-11-17 15:50:45,704 INFO L140 encePairwiseOnDemand]: 435/446 looper letters, 129 selfloop transitions, 71 changer transitions 0/200 dead transitions. [2023-11-17 15:50:45,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 200 transitions, 2993 flow [2023-11-17 15:50:45,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:50:45,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:50:45,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1666 transitions. [2023-11-17 15:50:45,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373542600896861 [2023-11-17 15:50:45,706 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1666 transitions. [2023-11-17 15:50:45,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1666 transitions. [2023-11-17 15:50:45,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:45,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1666 transitions. [2023-11-17 15:50:45,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 166.6) internal successors, (1666), 10 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:45,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:45,709 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:45,709 INFO L175 Difference]: Start difference. First operand has 168 places, 166 transitions, 2404 flow. Second operand 10 states and 1666 transitions. [2023-11-17 15:50:45,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 200 transitions, 2993 flow [2023-11-17 15:50:45,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 200 transitions, 2865 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-11-17 15:50:45,737 INFO L231 Difference]: Finished difference. Result has 165 places, 174 transitions, 2501 flow [2023-11-17 15:50:45,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2501, PETRI_PLACES=165, PETRI_TRANSITIONS=174} [2023-11-17 15:50:45,738 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 139 predicate places. [2023-11-17 15:50:45,738 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 174 transitions, 2501 flow [2023-11-17 15:50:45,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 161.22222222222223) internal successors, (1451), 9 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:45,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:45,738 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:45,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-17 15:50:45,738 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 15:50:45,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:45,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1356925876, now seen corresponding path program 2 times [2023-11-17 15:50:45,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:45,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508639978] [2023-11-17 15:50:45,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:45,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:45,956 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:45,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:45,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508639978] [2023-11-17 15:50:45,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508639978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:45,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:45,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 15:50:45,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686170174] [2023-11-17 15:50:45,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:45,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 15:50:45,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:45,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 15:50:45,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:50:45,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 446 [2023-11-17 15:50:45,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 174 transitions, 2501 flow. Second operand has 9 states, 9 states have (on average 161.22222222222223) internal successors, (1451), 9 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:45,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:45,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 446 [2023-11-17 15:50:45,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:46,241 INFO L124 PetriNetUnfolderBase]: 584/1054 cut-off events. [2023-11-17 15:50:46,241 INFO L125 PetriNetUnfolderBase]: For 7081/7081 co-relation queries the response was YES. [2023-11-17 15:50:46,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6501 conditions, 1054 events. 584/1054 cut-off events. For 7081/7081 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5048 event pairs, 107 based on Foata normal form. 4/1058 useless extension candidates. Maximal degree in co-relation 6389. Up to 294 conditions per place. [2023-11-17 15:50:46,247 INFO L140 encePairwiseOnDemand]: 435/446 looper letters, 150 selfloop transitions, 78 changer transitions 2/230 dead transitions. [2023-11-17 15:50:46,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 230 transitions, 3421 flow [2023-11-17 15:50:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:50:46,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:50:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1679 transitions. [2023-11-17 15:50:46,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376457399103139 [2023-11-17 15:50:46,248 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1679 transitions. [2023-11-17 15:50:46,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1679 transitions. [2023-11-17 15:50:46,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:46,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1679 transitions. [2023-11-17 15:50:46,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 167.9) internal successors, (1679), 10 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:46,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:46,252 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:46,252 INFO L175 Difference]: Start difference. First operand has 165 places, 174 transitions, 2501 flow. Second operand 10 states and 1679 transitions. [2023-11-17 15:50:46,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 230 transitions, 3421 flow [2023-11-17 15:50:46,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 230 transitions, 3378 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-17 15:50:46,280 INFO L231 Difference]: Finished difference. Result has 173 places, 183 transitions, 2811 flow [2023-11-17 15:50:46,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2811, PETRI_PLACES=173, PETRI_TRANSITIONS=183} [2023-11-17 15:50:46,280 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 147 predicate places. [2023-11-17 15:50:46,280 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 183 transitions, 2811 flow [2023-11-17 15:50:46,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 161.22222222222223) internal successors, (1451), 9 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:46,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:46,281 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:46,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-17 15:50:46,281 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 15:50:46,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:46,281 INFO L85 PathProgramCache]: Analyzing trace with hash -155439796, now seen corresponding path program 3 times [2023-11-17 15:50:46,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:46,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301947178] [2023-11-17 15:50:46,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:46,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:46,780 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-17 15:50:46,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:46,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301947178] [2023-11-17 15:50:46,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301947178] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:46,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009590018] [2023-11-17 15:50:46,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:50:46,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:46,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:46,782 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 15:50:46,809 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 15:50:46,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:50:46,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:46,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-17 15:50:46,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:47,039 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:47,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:50:47,120 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-11-17 15:50:47,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-11-17 15:50:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:47,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009590018] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:50:47,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:50:47,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 6] total 22 [2023-11-17 15:50:47,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450863378] [2023-11-17 15:50:47,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:50:47,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 15:50:47,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:47,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 15:50:47,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2023-11-17 15:50:47,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 446 [2023-11-17 15:50:47,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 183 transitions, 2811 flow. Second operand has 22 states, 22 states have (on average 138.1818181818182) internal successors, (3040), 22 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:47,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:47,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 446 [2023-11-17 15:50:47,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:47,719 INFO L124 PetriNetUnfolderBase]: 568/1024 cut-off events. [2023-11-17 15:50:47,720 INFO L125 PetriNetUnfolderBase]: For 8076/8076 co-relation queries the response was YES. [2023-11-17 15:50:47,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6532 conditions, 1024 events. 568/1024 cut-off events. For 8076/8076 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4838 event pairs, 108 based on Foata normal form. 4/1028 useless extension candidates. Maximal degree in co-relation 6438. Up to 354 conditions per place. [2023-11-17 15:50:47,726 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 122 selfloop transitions, 93 changer transitions 0/215 dead transitions. [2023-11-17 15:50:47,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 215 transitions, 3403 flow [2023-11-17 15:50:47,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:50:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:50:47,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1991 transitions. [2023-11-17 15:50:47,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31886611146700833 [2023-11-17 15:50:47,754 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1991 transitions. [2023-11-17 15:50:47,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1991 transitions. [2023-11-17 15:50:47,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:47,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1991 transitions. [2023-11-17 15:50:47,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 142.21428571428572) internal successors, (1991), 14 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:47,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:47,760 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:47,760 INFO L175 Difference]: Start difference. First operand has 173 places, 183 transitions, 2811 flow. Second operand 14 states and 1991 transitions. [2023-11-17 15:50:47,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 215 transitions, 3403 flow [2023-11-17 15:50:47,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 215 transitions, 3308 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-17 15:50:47,795 INFO L231 Difference]: Finished difference. Result has 181 places, 181 transitions, 2910 flow [2023-11-17 15:50:47,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=2648, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2910, PETRI_PLACES=181, PETRI_TRANSITIONS=181} [2023-11-17 15:50:47,795 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 155 predicate places. [2023-11-17 15:50:47,795 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 181 transitions, 2910 flow [2023-11-17 15:50:47,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 138.1818181818182) internal successors, (3040), 22 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:47,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:47,796 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:47,807 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 15:50:48,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:48,001 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 15:50:48,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:48,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1334318220, now seen corresponding path program 4 times [2023-11-17 15:50:48,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:48,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3814987] [2023-11-17 15:50:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:48,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:48,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:48,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3814987] [2023-11-17 15:50:48,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3814987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:48,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:48,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 15:50:48,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005191662] [2023-11-17 15:50:48,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:48,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 15:50:48,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:48,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 15:50:48,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:50:48,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 446 [2023-11-17 15:50:48,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 181 transitions, 2910 flow. Second operand has 9 states, 9 states have (on average 156.22222222222223) internal successors, (1406), 9 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:48,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:48,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 446 [2023-11-17 15:50:48,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:48,622 INFO L124 PetriNetUnfolderBase]: 552/994 cut-off events. [2023-11-17 15:50:48,622 INFO L125 PetriNetUnfolderBase]: For 8376/8376 co-relation queries the response was YES. [2023-11-17 15:50:48,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6507 conditions, 994 events. 552/994 cut-off events. For 8376/8376 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4679 event pairs, 117 based on Foata normal form. 4/998 useless extension candidates. Maximal degree in co-relation 6387. Up to 314 conditions per place. [2023-11-17 15:50:48,628 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 112 selfloop transitions, 88 changer transitions 2/202 dead transitions. [2023-11-17 15:50:48,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 202 transitions, 3399 flow [2023-11-17 15:50:48,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:50:48,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:50:48,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1609 transitions. [2023-11-17 15:50:48,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36076233183856504 [2023-11-17 15:50:48,630 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1609 transitions. [2023-11-17 15:50:48,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1609 transitions. [2023-11-17 15:50:48,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:48,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1609 transitions. [2023-11-17 15:50:48,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:48,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:48,634 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:48,634 INFO L175 Difference]: Start difference. First operand has 181 places, 181 transitions, 2910 flow. Second operand 10 states and 1609 transitions. [2023-11-17 15:50:48,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 202 transitions, 3399 flow [2023-11-17 15:50:48,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 202 transitions, 3328 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-11-17 15:50:48,667 INFO L231 Difference]: Finished difference. Result has 181 places, 177 transitions, 2964 flow [2023-11-17 15:50:48,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=2802, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2964, PETRI_PLACES=181, PETRI_TRANSITIONS=177} [2023-11-17 15:50:48,668 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 155 predicate places. [2023-11-17 15:50:48,669 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 177 transitions, 2964 flow [2023-11-17 15:50:48,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 156.22222222222223) internal successors, (1406), 9 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:48,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:48,669 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:48,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-17 15:50:48,669 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 15:50:48,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:48,669 INFO L85 PathProgramCache]: Analyzing trace with hash -354800822, now seen corresponding path program 5 times [2023-11-17 15:50:48,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:48,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022618919] [2023-11-17 15:50:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:48,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-17 15:50:49,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:49,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022618919] [2023-11-17 15:50:49,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022618919] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:49,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939072934] [2023-11-17 15:50:49,173 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:50:49,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:49,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:49,177 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 15:50:49,180 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 15:50:49,366 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 15:50:49,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:49,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-17 15:50:49,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:49,468 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:49,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:49,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939072934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:49,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:49,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 16 [2023-11-17 15:50:49,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385845031] [2023-11-17 15:50:49,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:49,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 15:50:49,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:49,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 15:50:49,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:50:49,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 446 [2023-11-17 15:50:49,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 177 transitions, 2964 flow. Second operand has 9 states, 9 states have (on average 161.22222222222223) internal successors, (1451), 9 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:49,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:49,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 446 [2023-11-17 15:50:49,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:49,775 INFO L124 PetriNetUnfolderBase]: 593/1071 cut-off events. [2023-11-17 15:50:49,775 INFO L125 PetriNetUnfolderBase]: For 10827/10827 co-relation queries the response was YES. [2023-11-17 15:50:49,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7155 conditions, 1071 events. 593/1071 cut-off events. For 10827/10827 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5147 event pairs, 149 based on Foata normal form. 4/1075 useless extension candidates. Maximal degree in co-relation 7046. Up to 560 conditions per place. [2023-11-17 15:50:49,782 INFO L140 encePairwiseOnDemand]: 436/446 looper letters, 178 selfloop transitions, 51 changer transitions 0/229 dead transitions. [2023-11-17 15:50:49,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 229 transitions, 3934 flow [2023-11-17 15:50:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:50:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:50:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1507 transitions. [2023-11-17 15:50:49,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37543597409068263 [2023-11-17 15:50:49,784 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1507 transitions. [2023-11-17 15:50:49,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1507 transitions. [2023-11-17 15:50:49,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:49,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1507 transitions. [2023-11-17 15:50:49,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 167.44444444444446) internal successors, (1507), 9 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:49,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 446.0) internal successors, (4460), 10 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:49,787 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 446.0) internal successors, (4460), 10 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:49,787 INFO L175 Difference]: Start difference. First operand has 181 places, 177 transitions, 2964 flow. Second operand 9 states and 1507 transitions. [2023-11-17 15:50:49,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 229 transitions, 3934 flow [2023-11-17 15:50:49,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 229 transitions, 3794 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-11-17 15:50:49,822 INFO L231 Difference]: Finished difference. Result has 183 places, 187 transitions, 3229 flow [2023-11-17 15:50:49,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=2835, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3229, PETRI_PLACES=183, PETRI_TRANSITIONS=187} [2023-11-17 15:50:49,823 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 157 predicate places. [2023-11-17 15:50:49,823 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 187 transitions, 3229 flow [2023-11-17 15:50:49,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 161.22222222222223) internal successors, (1451), 9 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:49,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:49,823 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:49,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-17 15:50:50,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-17 15:50:50,029 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 15:50:50,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:50,029 INFO L85 PathProgramCache]: Analyzing trace with hash -962695348, now seen corresponding path program 6 times [2023-11-17 15:50:50,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:50,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008312538] [2023-11-17 15:50:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:50,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:50,221 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:50,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:50,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008312538] [2023-11-17 15:50:50,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008312538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:50,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:50,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 15:50:50,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040723253] [2023-11-17 15:50:50,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:50,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 15:50:50,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:50,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 15:50:50,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:50:50,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 446 [2023-11-17 15:50:50,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 187 transitions, 3229 flow. Second operand has 9 states, 9 states have (on average 161.22222222222223) internal successors, (1451), 9 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:50,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:50,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 446 [2023-11-17 15:50:50,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:50,564 INFO L124 PetriNetUnfolderBase]: 577/1041 cut-off events. [2023-11-17 15:50:50,565 INFO L125 PetriNetUnfolderBase]: For 11002/11002 co-relation queries the response was YES. [2023-11-17 15:50:50,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7023 conditions, 1041 events. 577/1041 cut-off events. For 11002/11002 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4968 event pairs, 54 based on Foata normal form. 4/1045 useless extension candidates. Maximal degree in co-relation 6914. Up to 445 conditions per place. [2023-11-17 15:50:50,570 INFO L140 encePairwiseOnDemand]: 436/446 looper letters, 191 selfloop transitions, 38 changer transitions 2/231 dead transitions. [2023-11-17 15:50:50,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 231 transitions, 4008 flow [2023-11-17 15:50:50,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:50:50,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:50:50,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1502 transitions. [2023-11-17 15:50:50,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37419033383158945 [2023-11-17 15:50:50,572 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1502 transitions. [2023-11-17 15:50:50,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1502 transitions. [2023-11-17 15:50:50,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:50,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1502 transitions. [2023-11-17 15:50:50,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 166.88888888888889) internal successors, (1502), 9 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:50,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 446.0) internal successors, (4460), 10 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:50,575 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 446.0) internal successors, (4460), 10 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:50,575 INFO L175 Difference]: Start difference. First operand has 183 places, 187 transitions, 3229 flow. Second operand 9 states and 1502 transitions. [2023-11-17 15:50:50,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 231 transitions, 4008 flow [2023-11-17 15:50:50,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 231 transitions, 3928 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-11-17 15:50:50,611 INFO L231 Difference]: Finished difference. Result has 187 places, 184 transitions, 3199 flow [2023-11-17 15:50:50,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=3125, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3199, PETRI_PLACES=187, PETRI_TRANSITIONS=184} [2023-11-17 15:50:50,612 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 161 predicate places. [2023-11-17 15:50:50,612 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 184 transitions, 3199 flow [2023-11-17 15:50:50,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 161.22222222222223) internal successors, (1451), 9 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:50,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:50,612 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:50,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-17 15:50:50,612 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 15:50:50,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:50,612 INFO L85 PathProgramCache]: Analyzing trace with hash -820275760, now seen corresponding path program 7 times [2023-11-17 15:50:50,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:50,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258314687] [2023-11-17 15:50:50,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:50,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:50,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:50,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258314687] [2023-11-17 15:50:50,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258314687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:50,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:50,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 15:50:50,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031652464] [2023-11-17 15:50:50,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:50,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 15:50:50,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:50,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 15:50:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:50:50,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 446 [2023-11-17 15:50:50,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 184 transitions, 3199 flow. Second operand has 9 states, 9 states have (on average 161.22222222222223) internal successors, (1451), 9 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:50,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:50,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 446 [2023-11-17 15:50:50,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:51,068 INFO L124 PetriNetUnfolderBase]: 561/1009 cut-off events. [2023-11-17 15:50:51,068 INFO L125 PetriNetUnfolderBase]: For 10915/10915 co-relation queries the response was YES. [2023-11-17 15:50:51,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6800 conditions, 1009 events. 561/1009 cut-off events. For 10915/10915 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4782 event pairs, 157 based on Foata normal form. 4/1013 useless extension candidates. Maximal degree in co-relation 6690. Up to 602 conditions per place. [2023-11-17 15:50:51,074 INFO L140 encePairwiseOnDemand]: 436/446 looper letters, 159 selfloop transitions, 47 changer transitions 0/206 dead transitions. [2023-11-17 15:50:51,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 206 transitions, 3664 flow [2023-11-17 15:50:51,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:50:51,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:50:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1498 transitions. [2023-11-17 15:50:51,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3731938216243149 [2023-11-17 15:50:51,076 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1498 transitions. [2023-11-17 15:50:51,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1498 transitions. [2023-11-17 15:50:51,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:51,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1498 transitions. [2023-11-17 15:50:51,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 166.44444444444446) internal successors, (1498), 9 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:51,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 446.0) internal successors, (4460), 10 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:51,079 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 446.0) internal successors, (4460), 10 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:51,079 INFO L175 Difference]: Start difference. First operand has 187 places, 184 transitions, 3199 flow. Second operand 9 states and 1498 transitions. [2023-11-17 15:50:51,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 206 transitions, 3664 flow [2023-11-17 15:50:51,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 206 transitions, 3369 flow, removed 27 selfloop flow, removed 18 redundant places. [2023-11-17 15:50:51,108 INFO L231 Difference]: Finished difference. Result has 169 places, 180 transitions, 2968 flow [2023-11-17 15:50:51,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=2812, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2968, PETRI_PLACES=169, PETRI_TRANSITIONS=180} [2023-11-17 15:50:51,109 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 143 predicate places. [2023-11-17 15:50:51,109 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 180 transitions, 2968 flow [2023-11-17 15:50:51,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 161.22222222222223) internal successors, (1451), 9 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:51,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:51,109 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:51,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-17 15:50:51,110 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 15:50:51,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2080463265, now seen corresponding path program 1 times [2023-11-17 15:50:51,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:51,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473034348] [2023-11-17 15:50:51,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:51,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:51,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:51,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473034348] [2023-11-17 15:50:51,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473034348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:51,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:51,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 15:50:51,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243390498] [2023-11-17 15:50:51,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:51,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:50:51,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:51,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:50:51,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:50:51,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 446 [2023-11-17 15:50:51,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 180 transitions, 2968 flow. Second operand has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:51,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:51,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 446 [2023-11-17 15:50:51,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:52,260 INFO L124 PetriNetUnfolderBase]: 828/1508 cut-off events. [2023-11-17 15:50:52,260 INFO L125 PetriNetUnfolderBase]: For 11458/11458 co-relation queries the response was YES. [2023-11-17 15:50:52,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8774 conditions, 1508 events. 828/1508 cut-off events. For 11458/11458 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7826 event pairs, 53 based on Foata normal form. 1/1509 useless extension candidates. Maximal degree in co-relation 8675. Up to 251 conditions per place. [2023-11-17 15:50:52,268 INFO L140 encePairwiseOnDemand]: 432/446 looper letters, 224 selfloop transitions, 156 changer transitions 5/385 dead transitions. [2023-11-17 15:50:52,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 385 transitions, 5245 flow [2023-11-17 15:50:52,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-17 15:50:52,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-17 15:50:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4286 transitions. [2023-11-17 15:50:52,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3432094811018578 [2023-11-17 15:50:52,272 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4286 transitions. [2023-11-17 15:50:52,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4286 transitions. [2023-11-17 15:50:52,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:52,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4286 transitions. [2023-11-17 15:50:52,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 153.07142857142858) internal successors, (4286), 28 states have internal predecessors, (4286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:52,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 446.0) internal successors, (12934), 29 states have internal predecessors, (12934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:52,281 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 446.0) internal successors, (12934), 29 states have internal predecessors, (12934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:52,281 INFO L175 Difference]: Start difference. First operand has 169 places, 180 transitions, 2968 flow. Second operand 28 states and 4286 transitions. [2023-11-17 15:50:52,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 385 transitions, 5245 flow [2023-11-17 15:50:52,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 385 transitions, 5103 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-17 15:50:52,314 INFO L231 Difference]: Finished difference. Result has 205 places, 248 transitions, 4226 flow [2023-11-17 15:50:52,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4226, PETRI_PLACES=205, PETRI_TRANSITIONS=248} [2023-11-17 15:50:52,315 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 179 predicate places. [2023-11-17 15:50:52,315 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 248 transitions, 4226 flow [2023-11-17 15:50:52,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:52,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:52,315 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:52,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-17 15:50:52,315 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 15:50:52,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:52,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1808160637, now seen corresponding path program 2 times [2023-11-17 15:50:52,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:52,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050811330] [2023-11-17 15:50:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:52,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:52,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:52,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050811330] [2023-11-17 15:50:52,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050811330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:52,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:52,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 15:50:52,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846973444] [2023-11-17 15:50:52,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:52,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:50:52,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:52,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:50:52,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:50:52,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 446 [2023-11-17 15:50:52,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 248 transitions, 4226 flow. Second operand has 12 states, 12 states have (on average 148.75) internal successors, (1785), 12 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:52,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:52,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 446 [2023-11-17 15:50:52,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:53,404 INFO L124 PetriNetUnfolderBase]: 1234/2250 cut-off events. [2023-11-17 15:50:53,404 INFO L125 PetriNetUnfolderBase]: For 17176/17176 co-relation queries the response was YES. [2023-11-17 15:50:53,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13726 conditions, 2250 events. 1234/2250 cut-off events. For 17176/17176 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12682 event pairs, 145 based on Foata normal form. 2/2252 useless extension candidates. Maximal degree in co-relation 13611. Up to 361 conditions per place. [2023-11-17 15:50:53,416 INFO L140 encePairwiseOnDemand]: 432/446 looper letters, 211 selfloop transitions, 176 changer transitions 10/397 dead transitions. [2023-11-17 15:50:53,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 397 transitions, 6267 flow [2023-11-17 15:50:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 15:50:53,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 15:50:53,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3256 transitions. [2023-11-17 15:50:53,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34764040145206065 [2023-11-17 15:50:53,418 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3256 transitions. [2023-11-17 15:50:53,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3256 transitions. [2023-11-17 15:50:53,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:53,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3256 transitions. [2023-11-17 15:50:53,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 155.04761904761904) internal successors, (3256), 21 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:53,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 446.0) internal successors, (9812), 22 states have internal predecessors, (9812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:53,425 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 446.0) internal successors, (9812), 22 states have internal predecessors, (9812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:53,425 INFO L175 Difference]: Start difference. First operand has 205 places, 248 transitions, 4226 flow. Second operand 21 states and 3256 transitions. [2023-11-17 15:50:53,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 397 transitions, 6267 flow [2023-11-17 15:50:53,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 397 transitions, 5932 flow, removed 70 selfloop flow, removed 6 redundant places. [2023-11-17 15:50:53,491 INFO L231 Difference]: Finished difference. Result has 227 places, 290 transitions, 5034 flow [2023-11-17 15:50:53,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=3976, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5034, PETRI_PLACES=227, PETRI_TRANSITIONS=290} [2023-11-17 15:50:53,491 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 201 predicate places. [2023-11-17 15:50:53,491 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 290 transitions, 5034 flow [2023-11-17 15:50:53,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 148.75) internal successors, (1785), 12 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:53,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:53,492 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:53,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-17 15:50:53,492 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 15:50:53,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:53,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1895052645, now seen corresponding path program 3 times [2023-11-17 15:50:53,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:53,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446595095] [2023-11-17 15:50:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:53,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:53,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:53,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446595095] [2023-11-17 15:50:53,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446595095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:53,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:53,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:50:53,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011596319] [2023-11-17 15:50:53,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:53,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:50:53,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:53,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:50:53,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:50:53,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 446 [2023-11-17 15:50:53,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 290 transitions, 5034 flow. Second operand has 13 states, 13 states have (on average 146.6153846153846) internal successors, (1906), 13 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:53,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:53,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 446 [2023-11-17 15:50:53,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:54,873 INFO L124 PetriNetUnfolderBase]: 1526/2788 cut-off events. [2023-11-17 15:50:54,873 INFO L125 PetriNetUnfolderBase]: For 20990/20990 co-relation queries the response was YES. [2023-11-17 15:50:54,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16732 conditions, 2788 events. 1526/2788 cut-off events. For 20990/20990 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 16332 event pairs, 191 based on Foata normal form. 6/2794 useless extension candidates. Maximal degree in co-relation 16610. Up to 544 conditions per place. [2023-11-17 15:50:54,891 INFO L140 encePairwiseOnDemand]: 431/446 looper letters, 275 selfloop transitions, 208 changer transitions 7/490 dead transitions. [2023-11-17 15:50:54,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 490 transitions, 7359 flow [2023-11-17 15:50:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 15:50:54,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 15:50:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4156 transitions. [2023-11-17 15:50:54,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3451253944527487 [2023-11-17 15:50:54,894 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4156 transitions. [2023-11-17 15:50:54,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4156 transitions. [2023-11-17 15:50:54,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:54,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4156 transitions. [2023-11-17 15:50:54,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 153.92592592592592) internal successors, (4156), 27 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:54,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 446.0) internal successors, (12488), 28 states have internal predecessors, (12488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:54,902 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 446.0) internal successors, (12488), 28 states have internal predecessors, (12488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:54,902 INFO L175 Difference]: Start difference. First operand has 227 places, 290 transitions, 5034 flow. Second operand 27 states and 4156 transitions. [2023-11-17 15:50:54,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 490 transitions, 7359 flow [2023-11-17 15:50:54,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 490 transitions, 7250 flow, removed 35 selfloop flow, removed 5 redundant places. [2023-11-17 15:50:54,992 INFO L231 Difference]: Finished difference. Result has 257 places, 334 transitions, 6049 flow [2023-11-17 15:50:54,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=4967, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6049, PETRI_PLACES=257, PETRI_TRANSITIONS=334} [2023-11-17 15:50:54,992 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 231 predicate places. [2023-11-17 15:50:54,992 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 334 transitions, 6049 flow [2023-11-17 15:50:54,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 146.6153846153846) internal successors, (1906), 13 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:54,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:54,993 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:54,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-17 15:50:54,993 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 15:50:54,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:54,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1738554987, now seen corresponding path program 4 times [2023-11-17 15:50:54,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:54,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767243308] [2023-11-17 15:50:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:54,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-17 15:50:55,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:55,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767243308] [2023-11-17 15:50:55,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767243308] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:55,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533399586] [2023-11-17 15:50:55,674 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:50:55,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:55,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:55,685 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 15:50:55,714 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 15:50:55,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:50:55,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:55,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 15:50:55,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:55,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:50:55,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 67 [2023-11-17 15:50:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:56,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:56,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533399586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:56,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:56,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 24 [2023-11-17 15:50:56,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101078392] [2023-11-17 15:50:56,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:56,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 15:50:56,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:56,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 15:50:56,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2023-11-17 15:50:56,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 446 [2023-11-17 15:50:56,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 334 transitions, 6049 flow. Second operand has 8 states, 8 states have (on average 158.625) internal successors, (1269), 8 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:56,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:56,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 446 [2023-11-17 15:50:56,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:56,755 INFO L124 PetriNetUnfolderBase]: 1563/2882 cut-off events. [2023-11-17 15:50:56,755 INFO L125 PetriNetUnfolderBase]: For 25387/25387 co-relation queries the response was YES. [2023-11-17 15:50:56,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18680 conditions, 2882 events. 1563/2882 cut-off events. For 25387/25387 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17157 event pairs, 579 based on Foata normal form. 2/2884 useless extension candidates. Maximal degree in co-relation 18549. Up to 1827 conditions per place. [2023-11-17 15:50:56,774 INFO L140 encePairwiseOnDemand]: 436/446 looper letters, 297 selfloop transitions, 92 changer transitions 6/395 dead transitions. [2023-11-17 15:50:56,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 395 transitions, 7459 flow [2023-11-17 15:50:56,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:50:56,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:50:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1483 transitions. [2023-11-17 15:50:56,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36945690084703536 [2023-11-17 15:50:56,776 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1483 transitions. [2023-11-17 15:50:56,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1483 transitions. [2023-11-17 15:50:56,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:56,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1483 transitions. [2023-11-17 15:50:56,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 164.77777777777777) internal successors, (1483), 9 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:56,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 446.0) internal successors, (4460), 10 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:56,779 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 446.0) internal successors, (4460), 10 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:56,779 INFO L175 Difference]: Start difference. First operand has 257 places, 334 transitions, 6049 flow. Second operand 9 states and 1483 transitions. [2023-11-17 15:50:56,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 395 transitions, 7459 flow [2023-11-17 15:50:56,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 395 transitions, 7185 flow, removed 15 selfloop flow, removed 12 redundant places. [2023-11-17 15:50:56,905 INFO L231 Difference]: Finished difference. Result has 257 places, 361 transitions, 6530 flow [2023-11-17 15:50:56,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=5794, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6530, PETRI_PLACES=257, PETRI_TRANSITIONS=361} [2023-11-17 15:50:56,906 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 231 predicate places. [2023-11-17 15:50:56,906 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 361 transitions, 6530 flow [2023-11-17 15:50:56,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 158.625) internal successors, (1269), 8 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:56,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:56,907 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:56,917 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 15:50:57,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-17 15:50:57,111 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 15:50:57,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:57,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1935871549, now seen corresponding path program 5 times [2023-11-17 15:50:57,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:57,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445401327] [2023-11-17 15:50:57,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:57,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-17 15:50:57,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:57,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445401327] [2023-11-17 15:50:57,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445401327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:57,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740477476] [2023-11-17 15:50:57,751 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:50:57,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:57,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:57,752 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 15:50:57,752 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 15:50:57,928 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 15:50:57,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:57,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-17 15:50:57,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:58,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:50:58,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 55 [2023-11-17 15:50:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:58,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:58,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740477476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:58,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:58,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 24 [2023-11-17 15:50:58,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644982454] [2023-11-17 15:50:58,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:58,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:50:58,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:58,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:50:58,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2023-11-17 15:50:58,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 446 [2023-11-17 15:50:58,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 361 transitions, 6530 flow. Second operand has 11 states, 11 states have (on average 149.9090909090909) internal successors, (1649), 11 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:58,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:58,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 446 [2023-11-17 15:50:58,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:58,953 INFO L124 PetriNetUnfolderBase]: 1579/2930 cut-off events. [2023-11-17 15:50:58,953 INFO L125 PetriNetUnfolderBase]: For 25962/25962 co-relation queries the response was YES. [2023-11-17 15:50:59,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19082 conditions, 2930 events. 1579/2930 cut-off events. For 25962/25962 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 17672 event pairs, 601 based on Foata normal form. 2/2932 useless extension candidates. Maximal degree in co-relation 18948. Up to 1858 conditions per place. [2023-11-17 15:50:59,028 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 291 selfloop transitions, 107 changer transitions 6/404 dead transitions. [2023-11-17 15:50:59,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 404 transitions, 7750 flow [2023-11-17 15:50:59,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:50:59,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:50:59,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1701 transitions. [2023-11-17 15:50:59,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467183041174073 [2023-11-17 15:50:59,030 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1701 transitions. [2023-11-17 15:50:59,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1701 transitions. [2023-11-17 15:50:59,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:59,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1701 transitions. [2023-11-17 15:50:59,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 154.63636363636363) internal successors, (1701), 11 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:59,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 446.0) internal successors, (5352), 12 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:59,033 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 446.0) internal successors, (5352), 12 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:59,033 INFO L175 Difference]: Start difference. First operand has 257 places, 361 transitions, 6530 flow. Second operand 11 states and 1701 transitions. [2023-11-17 15:50:59,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 404 transitions, 7750 flow [2023-11-17 15:50:59,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 404 transitions, 7613 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-17 15:50:59,154 INFO L231 Difference]: Finished difference. Result has 267 places, 373 transitions, 6958 flow [2023-11-17 15:50:59,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=6405, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6958, PETRI_PLACES=267, PETRI_TRANSITIONS=373} [2023-11-17 15:50:59,155 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 241 predicate places. [2023-11-17 15:50:59,155 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 373 transitions, 6958 flow [2023-11-17 15:50:59,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 149.9090909090909) internal successors, (1649), 11 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:59,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:59,155 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:59,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-17 15:50:59,359 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,SelfDestructingSolverStorable39 [2023-11-17 15:50:59,360 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 15:50:59,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:59,360 INFO L85 PathProgramCache]: Analyzing trace with hash -213959967, now seen corresponding path program 6 times [2023-11-17 15:50:59,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:59,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414359269] [2023-11-17 15:50:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:59,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:50:59,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:59,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414359269] [2023-11-17 15:50:59,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414359269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:59,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:59,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:50:59,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521341752] [2023-11-17 15:50:59,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:59,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:50:59,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:59,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:50:59,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:50:59,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 446 [2023-11-17 15:50:59,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 373 transitions, 6958 flow. Second operand has 13 states, 13 states have (on average 146.6153846153846) internal successors, (1906), 13 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:59,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:59,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 446 [2023-11-17 15:50:59,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:00,772 INFO L124 PetriNetUnfolderBase]: 1637/3037 cut-off events. [2023-11-17 15:51:00,772 INFO L125 PetriNetUnfolderBase]: For 27066/27066 co-relation queries the response was YES. [2023-11-17 15:51:00,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20109 conditions, 3037 events. 1637/3037 cut-off events. For 27066/27066 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 18556 event pairs, 281 based on Foata normal form. 1/3038 useless extension candidates. Maximal degree in co-relation 19970. Up to 1112 conditions per place. [2023-11-17 15:51:00,796 INFO L140 encePairwiseOnDemand]: 431/446 looper letters, 267 selfloop transitions, 206 changer transitions 5/478 dead transitions. [2023-11-17 15:51:00,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 478 transitions, 8654 flow [2023-11-17 15:51:00,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 15:51:00,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 15:51:00,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3658 transitions. [2023-11-17 15:51:00,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34174140508221224 [2023-11-17 15:51:00,800 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3658 transitions. [2023-11-17 15:51:00,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3658 transitions. [2023-11-17 15:51:00,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:00,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3658 transitions. [2023-11-17 15:51:00,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 152.41666666666666) internal successors, (3658), 24 states have internal predecessors, (3658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:00,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 446.0) internal successors, (11150), 25 states have internal predecessors, (11150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:00,808 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 446.0) internal successors, (11150), 25 states have internal predecessors, (11150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:00,808 INFO L175 Difference]: Start difference. First operand has 267 places, 373 transitions, 6958 flow. Second operand 24 states and 3658 transitions. [2023-11-17 15:51:00,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 478 transitions, 8654 flow [2023-11-17 15:51:00,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 478 transitions, 8544 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-11-17 15:51:00,963 INFO L231 Difference]: Finished difference. Result has 290 places, 388 transitions, 7588 flow [2023-11-17 15:51:00,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=6860, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=7588, PETRI_PLACES=290, PETRI_TRANSITIONS=388} [2023-11-17 15:51:00,964 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 264 predicate places. [2023-11-17 15:51:00,964 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 388 transitions, 7588 flow [2023-11-17 15:51:00,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 146.6153846153846) internal successors, (1906), 13 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:00,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:00,965 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:00,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-17 15:51:00,965 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 15:51:00,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:00,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1642025187, now seen corresponding path program 7 times [2023-11-17 15:51:00,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:00,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468434770] [2023-11-17 15:51:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:00,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:01,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:01,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468434770] [2023-11-17 15:51:01,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468434770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:01,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:01,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:51:01,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731891076] [2023-11-17 15:51:01,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:01,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:51:01,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:01,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:51:01,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:51:01,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 446 [2023-11-17 15:51:01,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 388 transitions, 7588 flow. Second operand has 13 states, 13 states have (on average 146.6153846153846) internal successors, (1906), 13 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:01,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:01,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 446 [2023-11-17 15:51:01,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:02,702 INFO L124 PetriNetUnfolderBase]: 1766/3275 cut-off events. [2023-11-17 15:51:02,703 INFO L125 PetriNetUnfolderBase]: For 32237/32237 co-relation queries the response was YES. [2023-11-17 15:51:02,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22276 conditions, 3275 events. 1766/3275 cut-off events. For 32237/32237 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 20252 event pairs, 303 based on Foata normal form. 6/3281 useless extension candidates. Maximal degree in co-relation 22133. Up to 1112 conditions per place. [2023-11-17 15:51:02,728 INFO L140 encePairwiseOnDemand]: 431/446 looper letters, 292 selfloop transitions, 211 changer transitions 7/510 dead transitions. [2023-11-17 15:51:02,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 510 transitions, 9431 flow [2023-11-17 15:51:02,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-17 15:51:02,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-17 15:51:02,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3816 transitions. [2023-11-17 15:51:02,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3422421524663677 [2023-11-17 15:51:02,732 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3816 transitions. [2023-11-17 15:51:02,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3816 transitions. [2023-11-17 15:51:02,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:02,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3816 transitions. [2023-11-17 15:51:02,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 152.64) internal successors, (3816), 25 states have internal predecessors, (3816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:02,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 446.0) internal successors, (11596), 26 states have internal predecessors, (11596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:02,740 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 446.0) internal successors, (11596), 26 states have internal predecessors, (11596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:02,740 INFO L175 Difference]: Start difference. First operand has 290 places, 388 transitions, 7588 flow. Second operand 25 states and 3816 transitions. [2023-11-17 15:51:02,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 510 transitions, 9431 flow [2023-11-17 15:51:02,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 510 transitions, 9120 flow, removed 22 selfloop flow, removed 12 redundant places. [2023-11-17 15:51:02,928 INFO L231 Difference]: Finished difference. Result has 306 places, 398 transitions, 7997 flow [2023-11-17 15:51:02,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=7291, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7997, PETRI_PLACES=306, PETRI_TRANSITIONS=398} [2023-11-17 15:51:02,929 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 280 predicate places. [2023-11-17 15:51:02,929 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 398 transitions, 7997 flow [2023-11-17 15:51:02,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 146.6153846153846) internal successors, (1906), 13 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:02,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:02,930 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:02,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-17 15:51:02,930 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 15:51:02,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:02,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1022797803, now seen corresponding path program 8 times [2023-11-17 15:51:02,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:02,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135554071] [2023-11-17 15:51:02,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:02,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:03,603 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-17 15:51:03,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:03,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135554071] [2023-11-17 15:51:03,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135554071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:03,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079989464] [2023-11-17 15:51:03,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:51:03,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:03,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:51:03,604 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 15:51:03,605 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 15:51:03,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 15:51:03,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:51:03,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-17 15:51:03,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:51:03,951 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:51:03,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 55 [2023-11-17 15:51:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:04,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:51:04,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079989464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:04,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:51:04,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 22 [2023-11-17 15:51:04,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539616134] [2023-11-17 15:51:04,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:04,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:51:04,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:04,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:51:04,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2023-11-17 15:51:04,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 446 [2023-11-17 15:51:04,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 398 transitions, 7997 flow. Second operand has 11 states, 11 states have (on average 149.9090909090909) internal successors, (1649), 11 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:04,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:04,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 446 [2023-11-17 15:51:04,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:04,915 INFO L124 PetriNetUnfolderBase]: 1781/3327 cut-off events. [2023-11-17 15:51:04,915 INFO L125 PetriNetUnfolderBase]: For 35698/35698 co-relation queries the response was YES. [2023-11-17 15:51:04,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23111 conditions, 3327 events. 1781/3327 cut-off events. For 35698/35698 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 20895 event pairs, 644 based on Foata normal form. 2/3329 useless extension candidates. Maximal degree in co-relation 22964. Up to 2099 conditions per place. [2023-11-17 15:51:04,948 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 307 selfloop transitions, 129 changer transitions 6/442 dead transitions. [2023-11-17 15:51:04,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 442 transitions, 9241 flow [2023-11-17 15:51:04,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:51:04,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:51:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1712 transitions. [2023-11-17 15:51:04,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34896045658377495 [2023-11-17 15:51:04,950 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1712 transitions. [2023-11-17 15:51:04,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1712 transitions. [2023-11-17 15:51:04,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:04,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1712 transitions. [2023-11-17 15:51:04,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 155.63636363636363) internal successors, (1712), 11 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:04,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 446.0) internal successors, (5352), 12 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:04,953 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 446.0) internal successors, (5352), 12 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:04,953 INFO L175 Difference]: Start difference. First operand has 306 places, 398 transitions, 7997 flow. Second operand 11 states and 1712 transitions. [2023-11-17 15:51:04,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 442 transitions, 9241 flow [2023-11-17 15:51:05,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 442 transitions, 8889 flow, removed 26 selfloop flow, removed 15 redundant places. [2023-11-17 15:51:05,150 INFO L231 Difference]: Finished difference. Result has 303 places, 406 transitions, 8092 flow [2023-11-17 15:51:05,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=7652, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8092, PETRI_PLACES=303, PETRI_TRANSITIONS=406} [2023-11-17 15:51:05,151 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 277 predicate places. [2023-11-17 15:51:05,151 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 406 transitions, 8092 flow [2023-11-17 15:51:05,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 149.9090909090909) internal successors, (1649), 11 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:05,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:05,151 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:05,158 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 15:51:05,356 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,SelfDestructingSolverStorable42 [2023-11-17 15:51:05,356 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 15:51:05,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:05,356 INFO L85 PathProgramCache]: Analyzing trace with hash -834500727, now seen corresponding path program 9 times [2023-11-17 15:51:05,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:05,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716190231] [2023-11-17 15:51:05,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:05,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:05,816 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:05,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:05,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716190231] [2023-11-17 15:51:05,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716190231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:05,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:05,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 15:51:05,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669286178] [2023-11-17 15:51:05,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:05,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:51:05,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:05,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:51:05,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:51:05,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 446 [2023-11-17 15:51:05,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 406 transitions, 8092 flow. Second operand has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:05,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:05,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 446 [2023-11-17 15:51:05,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:07,056 INFO L124 PetriNetUnfolderBase]: 1911/3543 cut-off events. [2023-11-17 15:51:07,056 INFO L125 PetriNetUnfolderBase]: For 36689/36689 co-relation queries the response was YES. [2023-11-17 15:51:07,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24618 conditions, 3543 events. 1911/3543 cut-off events. For 36689/36689 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 22560 event pairs, 132 based on Foata normal form. 2/3545 useless extension candidates. Maximal degree in co-relation 24469. Up to 817 conditions per place. [2023-11-17 15:51:07,080 INFO L140 encePairwiseOnDemand]: 432/446 looper letters, 217 selfloop transitions, 308 changer transitions 6/531 dead transitions. [2023-11-17 15:51:07,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 531 transitions, 10229 flow [2023-11-17 15:51:07,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 15:51:07,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 15:51:07,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4116 transitions. [2023-11-17 15:51:07,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3418036870951669 [2023-11-17 15:51:07,083 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4116 transitions. [2023-11-17 15:51:07,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4116 transitions. [2023-11-17 15:51:07,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:07,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4116 transitions. [2023-11-17 15:51:07,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 152.44444444444446) internal successors, (4116), 27 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:07,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 446.0) internal successors, (12488), 28 states have internal predecessors, (12488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:07,090 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 446.0) internal successors, (12488), 28 states have internal predecessors, (12488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:07,091 INFO L175 Difference]: Start difference. First operand has 303 places, 406 transitions, 8092 flow. Second operand 27 states and 4116 transitions. [2023-11-17 15:51:07,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 531 transitions, 10229 flow [2023-11-17 15:51:07,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 531 transitions, 9967 flow, removed 14 selfloop flow, removed 7 redundant places. [2023-11-17 15:51:07,282 INFO L231 Difference]: Finished difference. Result has 327 places, 437 transitions, 9194 flow [2023-11-17 15:51:07,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=7857, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=9194, PETRI_PLACES=327, PETRI_TRANSITIONS=437} [2023-11-17 15:51:07,282 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 301 predicate places. [2023-11-17 15:51:07,282 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 437 transitions, 9194 flow [2023-11-17 15:51:07,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:07,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:07,283 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:07,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-17 15:51:07,283 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 15:51:07,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:07,283 INFO L85 PathProgramCache]: Analyzing trace with hash 2032401349, now seen corresponding path program 10 times [2023-11-17 15:51:07,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:07,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17650356] [2023-11-17 15:51:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:07,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:07,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:07,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17650356] [2023-11-17 15:51:07,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17650356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:07,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:07,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 15:51:07,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419285424] [2023-11-17 15:51:07,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:07,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:51:07,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:07,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:51:07,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:51:07,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 446 [2023-11-17 15:51:07,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 437 transitions, 9194 flow. Second operand has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:07,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:07,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 446 [2023-11-17 15:51:07,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:08,744 INFO L124 PetriNetUnfolderBase]: 1887/3499 cut-off events. [2023-11-17 15:51:08,745 INFO L125 PetriNetUnfolderBase]: For 40909/40909 co-relation queries the response was YES. [2023-11-17 15:51:08,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25615 conditions, 3499 events. 1887/3499 cut-off events. For 40909/40909 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 22162 event pairs, 264 based on Foata normal form. 10/3509 useless extension candidates. Maximal degree in co-relation 25461. Up to 1144 conditions per place. [2023-11-17 15:51:08,773 INFO L140 encePairwiseOnDemand]: 432/446 looper letters, 208 selfloop transitions, 278 changer transitions 10/496 dead transitions. [2023-11-17 15:51:08,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 496 transitions, 10447 flow [2023-11-17 15:51:08,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 15:51:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 15:51:08,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3501 transitions. [2023-11-17 15:51:08,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34129459933710277 [2023-11-17 15:51:08,776 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3501 transitions. [2023-11-17 15:51:08,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3501 transitions. [2023-11-17 15:51:08,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:08,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3501 transitions. [2023-11-17 15:51:08,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 152.2173913043478) internal successors, (3501), 23 states have internal predecessors, (3501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:08,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 446.0) internal successors, (10704), 24 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:08,782 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 446.0) internal successors, (10704), 24 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:08,782 INFO L175 Difference]: Start difference. First operand has 327 places, 437 transitions, 9194 flow. Second operand 23 states and 3501 transitions. [2023-11-17 15:51:08,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 496 transitions, 10447 flow [2023-11-17 15:51:08,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 496 transitions, 10023 flow, removed 56 selfloop flow, removed 11 redundant places. [2023-11-17 15:51:08,999 INFO L231 Difference]: Finished difference. Result has 337 places, 432 transitions, 9225 flow [2023-11-17 15:51:08,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=8736, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=9225, PETRI_PLACES=337, PETRI_TRANSITIONS=432} [2023-11-17 15:51:08,999 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 311 predicate places. [2023-11-17 15:51:09,000 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 432 transitions, 9225 flow [2023-11-17 15:51:09,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:09,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:09,000 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:09,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-17 15:51:09,000 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 15:51:09,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:09,000 INFO L85 PathProgramCache]: Analyzing trace with hash -705252515, now seen corresponding path program 11 times [2023-11-17 15:51:09,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:09,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441108681] [2023-11-17 15:51:09,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:09,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:09,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:09,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441108681] [2023-11-17 15:51:09,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441108681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:09,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:09,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:51:09,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939689752] [2023-11-17 15:51:09,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:09,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:51:09,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:09,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:51:09,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:51:09,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 446 [2023-11-17 15:51:09,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 432 transitions, 9225 flow. Second operand has 13 states, 13 states have (on average 146.6153846153846) internal successors, (1906), 13 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:09,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:09,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 446 [2023-11-17 15:51:09,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:10,294 INFO L124 PetriNetUnfolderBase]: 1877/3470 cut-off events. [2023-11-17 15:51:10,294 INFO L125 PetriNetUnfolderBase]: For 41853/41853 co-relation queries the response was YES. [2023-11-17 15:51:10,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25289 conditions, 3470 events. 1877/3470 cut-off events. For 41853/41853 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 21883 event pairs, 168 based on Foata normal form. 3/3473 useless extension candidates. Maximal degree in co-relation 25137. Up to 1198 conditions per place. [2023-11-17 15:51:10,324 INFO L140 encePairwiseOnDemand]: 432/446 looper letters, 314 selfloop transitions, 163 changer transitions 15/492 dead transitions. [2023-11-17 15:51:10,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 492 transitions, 10615 flow [2023-11-17 15:51:10,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:51:10,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:51:10,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2267 transitions. [2023-11-17 15:51:10,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33886397608370705 [2023-11-17 15:51:10,326 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2267 transitions. [2023-11-17 15:51:10,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2267 transitions. [2023-11-17 15:51:10,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:10,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2267 transitions. [2023-11-17 15:51:10,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 151.13333333333333) internal successors, (2267), 15 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:10,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:10,330 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:10,331 INFO L175 Difference]: Start difference. First operand has 337 places, 432 transitions, 9225 flow. Second operand 15 states and 2267 transitions. [2023-11-17 15:51:10,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 492 transitions, 10615 flow [2023-11-17 15:51:10,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 492 transitions, 10157 flow, removed 9 selfloop flow, removed 18 redundant places. [2023-11-17 15:51:10,537 INFO L231 Difference]: Finished difference. Result has 335 places, 428 transitions, 8952 flow [2023-11-17 15:51:10,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=8727, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=8952, PETRI_PLACES=335, PETRI_TRANSITIONS=428} [2023-11-17 15:51:10,537 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 309 predicate places. [2023-11-17 15:51:10,537 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 428 transitions, 8952 flow [2023-11-17 15:51:10,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 146.6153846153846) internal successors, (1906), 13 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:10,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:10,538 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:10,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-17 15:51:10,538 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 15:51:10,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:10,538 INFO L85 PathProgramCache]: Analyzing trace with hash 573601841, now seen corresponding path program 12 times [2023-11-17 15:51:10,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:10,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845584967] [2023-11-17 15:51:10,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:10,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:10,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:10,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845584967] [2023-11-17 15:51:10,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845584967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:10,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:10,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:51:10,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607060665] [2023-11-17 15:51:10,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:10,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:51:10,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:10,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:51:10,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:51:10,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 446 [2023-11-17 15:51:10,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 428 transitions, 8952 flow. Second operand has 11 states, 11 states have (on average 149.9090909090909) internal successors, (1649), 11 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:10,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:10,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 446 [2023-11-17 15:51:10,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:11,837 INFO L124 PetriNetUnfolderBase]: 1869/3456 cut-off events. [2023-11-17 15:51:11,837 INFO L125 PetriNetUnfolderBase]: For 41433/41433 co-relation queries the response was YES. [2023-11-17 15:51:11,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25122 conditions, 3456 events. 1869/3456 cut-off events. For 41433/41433 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 21709 event pairs, 183 based on Foata normal form. 9/3465 useless extension candidates. Maximal degree in co-relation 24974. Up to 934 conditions per place. [2023-11-17 15:51:11,861 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 226 selfloop transitions, 258 changer transitions 11/495 dead transitions. [2023-11-17 15:51:11,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 495 transitions, 10372 flow [2023-11-17 15:51:11,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 15:51:11,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 15:51:11,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2502 transitions. [2023-11-17 15:51:11,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506165919282511 [2023-11-17 15:51:11,863 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2502 transitions. [2023-11-17 15:51:11,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2502 transitions. [2023-11-17 15:51:11,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:11,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2502 transitions. [2023-11-17 15:51:11,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 156.375) internal successors, (2502), 16 states have internal predecessors, (2502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:11,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 446.0) internal successors, (7582), 17 states have internal predecessors, (7582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:11,868 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 446.0) internal successors, (7582), 17 states have internal predecessors, (7582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:11,868 INFO L175 Difference]: Start difference. First operand has 335 places, 428 transitions, 8952 flow. Second operand 16 states and 2502 transitions. [2023-11-17 15:51:11,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 495 transitions, 10372 flow [2023-11-17 15:51:12,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 495 transitions, 9994 flow, removed 9 selfloop flow, removed 14 redundant places. [2023-11-17 15:51:12,051 INFO L231 Difference]: Finished difference. Result has 331 places, 426 transitions, 9124 flow [2023-11-17 15:51:12,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=8564, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9124, PETRI_PLACES=331, PETRI_TRANSITIONS=426} [2023-11-17 15:51:12,051 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 305 predicate places. [2023-11-17 15:51:12,051 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 426 transitions, 9124 flow [2023-11-17 15:51:12,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 149.9090909090909) internal successors, (1649), 11 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:12,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:12,052 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:12,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-17 15:51:12,052 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 15:51:12,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:12,052 INFO L85 PathProgramCache]: Analyzing trace with hash -311000091, now seen corresponding path program 13 times [2023-11-17 15:51:12,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:12,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820635222] [2023-11-17 15:51:12,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:12,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:12,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:12,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820635222] [2023-11-17 15:51:12,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820635222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:12,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:12,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:51:12,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286581832] [2023-11-17 15:51:12,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:12,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:51:12,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:12,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:51:12,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:51:12,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 446 [2023-11-17 15:51:12,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 426 transitions, 9124 flow. Second operand has 13 states, 13 states have (on average 146.6153846153846) internal successors, (1906), 13 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:12,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:12,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 446 [2023-11-17 15:51:12,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:13,585 INFO L124 PetriNetUnfolderBase]: 1870/3467 cut-off events. [2023-11-17 15:51:13,586 INFO L125 PetriNetUnfolderBase]: For 41967/41967 co-relation queries the response was YES. [2023-11-17 15:51:13,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25182 conditions, 3467 events. 1870/3467 cut-off events. For 41967/41967 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 21886 event pairs, 166 based on Foata normal form. 1/3468 useless extension candidates. Maximal degree in co-relation 25030. Up to 1211 conditions per place. [2023-11-17 15:51:13,616 INFO L140 encePairwiseOnDemand]: 432/446 looper letters, 329 selfloop transitions, 175 changer transitions 5/509 dead transitions. [2023-11-17 15:51:13,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 509 transitions, 10814 flow [2023-11-17 15:51:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 15:51:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 15:51:13,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3175 transitions. [2023-11-17 15:51:13,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3389920990817852 [2023-11-17 15:51:13,619 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3175 transitions. [2023-11-17 15:51:13,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3175 transitions. [2023-11-17 15:51:13,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:13,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3175 transitions. [2023-11-17 15:51:13,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 151.1904761904762) internal successors, (3175), 21 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:13,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 446.0) internal successors, (9812), 22 states have internal predecessors, (9812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:13,624 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 446.0) internal successors, (9812), 22 states have internal predecessors, (9812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:13,625 INFO L175 Difference]: Start difference. First operand has 331 places, 426 transitions, 9124 flow. Second operand 21 states and 3175 transitions. [2023-11-17 15:51:13,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 509 transitions, 10814 flow [2023-11-17 15:51:13,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 509 transitions, 10240 flow, removed 32 selfloop flow, removed 16 redundant places. [2023-11-17 15:51:13,822 INFO L231 Difference]: Finished difference. Result has 337 places, 434 transitions, 9120 flow [2023-11-17 15:51:13,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=8607, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9120, PETRI_PLACES=337, PETRI_TRANSITIONS=434} [2023-11-17 15:51:13,822 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 311 predicate places. [2023-11-17 15:51:13,822 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 434 transitions, 9120 flow [2023-11-17 15:51:13,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 146.6153846153846) internal successors, (1906), 13 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:13,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:13,823 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:13,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-11-17 15:51:13,823 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 15:51:13,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:13,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1276951921, now seen corresponding path program 14 times [2023-11-17 15:51:13,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:13,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248023057] [2023-11-17 15:51:13,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:13,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:14,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:14,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248023057] [2023-11-17 15:51:14,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248023057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:14,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:14,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:51:14,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638484129] [2023-11-17 15:51:14,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:14,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:51:14,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:14,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:51:14,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:51:14,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 446 [2023-11-17 15:51:14,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 434 transitions, 9120 flow. Second operand has 13 states, 13 states have (on average 146.6153846153846) internal successors, (1906), 13 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:14,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:14,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 446 [2023-11-17 15:51:14,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:15,269 INFO L124 PetriNetUnfolderBase]: 1871/3470 cut-off events. [2023-11-17 15:51:15,270 INFO L125 PetriNetUnfolderBase]: For 40709/40709 co-relation queries the response was YES. [2023-11-17 15:51:15,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25247 conditions, 3470 events. 1871/3470 cut-off events. For 40709/40709 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 21873 event pairs, 109 based on Foata normal form. 1/3471 useless extension candidates. Maximal degree in co-relation 25094. Up to 827 conditions per place. [2023-11-17 15:51:15,299 INFO L140 encePairwiseOnDemand]: 432/446 looper letters, 240 selfloop transitions, 282 changer transitions 5/527 dead transitions. [2023-11-17 15:51:15,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 527 transitions, 10859 flow [2023-11-17 15:51:15,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 15:51:15,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 15:51:15,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2905 transitions. [2023-11-17 15:51:15,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34281331130516873 [2023-11-17 15:51:15,301 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2905 transitions. [2023-11-17 15:51:15,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2905 transitions. [2023-11-17 15:51:15,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:15,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2905 transitions. [2023-11-17 15:51:15,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 152.89473684210526) internal successors, (2905), 19 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:15,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 446.0) internal successors, (8920), 20 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:15,306 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 446.0) internal successors, (8920), 20 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:15,307 INFO L175 Difference]: Start difference. First operand has 337 places, 434 transitions, 9120 flow. Second operand 19 states and 2905 transitions. [2023-11-17 15:51:15,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 527 transitions, 10859 flow [2023-11-17 15:51:15,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 527 transitions, 10468 flow, removed 9 selfloop flow, removed 15 redundant places. [2023-11-17 15:51:15,505 INFO L231 Difference]: Finished difference. Result has 342 places, 452 transitions, 9558 flow [2023-11-17 15:51:15,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=8749, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9558, PETRI_PLACES=342, PETRI_TRANSITIONS=452} [2023-11-17 15:51:15,506 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 316 predicate places. [2023-11-17 15:51:15,506 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 452 transitions, 9558 flow [2023-11-17 15:51:15,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 146.6153846153846) internal successors, (1906), 13 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:15,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:15,506 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:15,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-11-17 15:51:15,507 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 15:51:15,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:15,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1410911491, now seen corresponding path program 15 times [2023-11-17 15:51:15,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:15,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249146047] [2023-11-17 15:51:15,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:15,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:15,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:15,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249146047] [2023-11-17 15:51:15,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249146047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:15,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:15,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:51:15,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648514901] [2023-11-17 15:51:15,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:15,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:51:15,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:15,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:51:15,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:51:15,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 446 [2023-11-17 15:51:15,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 452 transitions, 9558 flow. Second operand has 13 states, 13 states have (on average 146.6153846153846) internal successors, (1906), 13 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:15,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:15,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 446 [2023-11-17 15:51:15,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:17,242 INFO L124 PetriNetUnfolderBase]: 1890/3499 cut-off events. [2023-11-17 15:51:17,243 INFO L125 PetriNetUnfolderBase]: For 42092/42092 co-relation queries the response was YES. [2023-11-17 15:51:17,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25825 conditions, 3499 events. 1890/3499 cut-off events. For 42092/42092 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 22090 event pairs, 111 based on Foata normal form. 1/3500 useless extension candidates. Maximal degree in co-relation 25670. Up to 798 conditions per place. [2023-11-17 15:51:17,276 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 261 selfloop transitions, 288 changer transitions 5/554 dead transitions. [2023-11-17 15:51:17,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 554 transitions, 11358 flow [2023-11-17 15:51:17,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-17 15:51:17,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-17 15:51:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3806 transitions. [2023-11-17 15:51:17,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3413452914798206 [2023-11-17 15:51:17,279 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3806 transitions. [2023-11-17 15:51:17,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3806 transitions. [2023-11-17 15:51:17,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:17,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3806 transitions. [2023-11-17 15:51:17,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 152.24) internal successors, (3806), 25 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:17,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 446.0) internal successors, (11596), 26 states have internal predecessors, (11596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:17,286 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 446.0) internal successors, (11596), 26 states have internal predecessors, (11596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:17,286 INFO L175 Difference]: Start difference. First operand has 342 places, 452 transitions, 9558 flow. Second operand 25 states and 3806 transitions. [2023-11-17 15:51:17,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 554 transitions, 11358 flow [2023-11-17 15:51:17,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 554 transitions, 11092 flow, removed 30 selfloop flow, removed 10 redundant places. [2023-11-17 15:51:17,527 INFO L231 Difference]: Finished difference. Result has 359 places, 460 transitions, 10180 flow [2023-11-17 15:51:17,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=9309, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=10180, PETRI_PLACES=359, PETRI_TRANSITIONS=460} [2023-11-17 15:51:17,528 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 333 predicate places. [2023-11-17 15:51:17,528 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 460 transitions, 10180 flow [2023-11-17 15:51:17,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 146.6153846153846) internal successors, (1906), 13 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:17,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:17,529 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:17,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-11-17 15:51:17,529 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 15:51:17,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:17,529 INFO L85 PathProgramCache]: Analyzing trace with hash -17153729, now seen corresponding path program 16 times [2023-11-17 15:51:17,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:17,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582590994] [2023-11-17 15:51:17,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:17,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:17,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:17,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582590994] [2023-11-17 15:51:17,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582590994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:17,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:17,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 15:51:17,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855486119] [2023-11-17 15:51:17,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:17,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:51:17,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:17,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:51:17,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:51:17,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 446 [2023-11-17 15:51:17,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 460 transitions, 10180 flow. Second operand has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:17,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:17,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 446 [2023-11-17 15:51:17,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:18,946 INFO L124 PetriNetUnfolderBase]: 1878/3477 cut-off events. [2023-11-17 15:51:18,946 INFO L125 PetriNetUnfolderBase]: For 43892/43892 co-relation queries the response was YES. [2023-11-17 15:51:18,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26448 conditions, 3477 events. 1878/3477 cut-off events. For 43892/43892 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 21923 event pairs, 167 based on Foata normal form. 5/3482 useless extension candidates. Maximal degree in co-relation 26290. Up to 1163 conditions per place. [2023-11-17 15:51:18,981 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 325 selfloop transitions, 185 changer transitions 9/519 dead transitions. [2023-11-17 15:51:18,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 519 transitions, 11507 flow [2023-11-17 15:51:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 15:51:18,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 15:51:18,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2885 transitions. [2023-11-17 15:51:18,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34045315081425537 [2023-11-17 15:51:18,983 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2885 transitions. [2023-11-17 15:51:18,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2885 transitions. [2023-11-17 15:51:18,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:18,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2885 transitions. [2023-11-17 15:51:18,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 151.8421052631579) internal successors, (2885), 19 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:18,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 446.0) internal successors, (8920), 20 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:18,989 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 446.0) internal successors, (8920), 20 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:18,989 INFO L175 Difference]: Start difference. First operand has 359 places, 460 transitions, 10180 flow. Second operand 19 states and 2885 transitions. [2023-11-17 15:51:18,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 519 transitions, 11507 flow [2023-11-17 15:51:19,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 519 transitions, 11082 flow, removed 16 selfloop flow, removed 19 redundant places. [2023-11-17 15:51:19,235 INFO L231 Difference]: Finished difference. Result has 358 places, 456 transitions, 10065 flow [2023-11-17 15:51:19,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=9730, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10065, PETRI_PLACES=358, PETRI_TRANSITIONS=456} [2023-11-17 15:51:19,236 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 332 predicate places. [2023-11-17 15:51:19,236 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 456 transitions, 10065 flow [2023-11-17 15:51:19,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 146.75) internal successors, (1761), 12 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:19,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:19,237 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:19,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-11-17 15:51:19,237 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 15:51:19,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:19,237 INFO L85 PathProgramCache]: Analyzing trace with hash 185618267, now seen corresponding path program 17 times [2023-11-17 15:51:19,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:19,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481385953] [2023-11-17 15:51:19,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:19,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:19,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:19,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481385953] [2023-11-17 15:51:19,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481385953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:19,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:19,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:51:19,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670416834] [2023-11-17 15:51:19,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:19,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:51:19,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:19,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:51:19,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:51:19,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 446 [2023-11-17 15:51:19,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 456 transitions, 10065 flow. Second operand has 11 states, 11 states have (on average 149.9090909090909) internal successors, (1649), 11 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:19,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:19,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 446 [2023-11-17 15:51:19,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:20,575 INFO L124 PetriNetUnfolderBase]: 2022/3752 cut-off events. [2023-11-17 15:51:20,575 INFO L125 PetriNetUnfolderBase]: For 49890/49890 co-relation queries the response was YES. [2023-11-17 15:51:20,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27957 conditions, 3752 events. 2022/3752 cut-off events. For 49890/49890 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 24231 event pairs, 101 based on Foata normal form. 19/3771 useless extension candidates. Maximal degree in co-relation 27800. Up to 1103 conditions per place. [2023-11-17 15:51:20,614 INFO L140 encePairwiseOnDemand]: 432/446 looper letters, 225 selfloop transitions, 317 changer transitions 11/553 dead transitions. [2023-11-17 15:51:20,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 553 transitions, 11956 flow [2023-11-17 15:51:20,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 15:51:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 15:51:20,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2816 transitions. [2023-11-17 15:51:20,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3507722969606378 [2023-11-17 15:51:20,617 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2816 transitions. [2023-11-17 15:51:20,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2816 transitions. [2023-11-17 15:51:20,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:20,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2816 transitions. [2023-11-17 15:51:20,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 156.44444444444446) internal successors, (2816), 18 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:20,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 446.0) internal successors, (8474), 19 states have internal predecessors, (8474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:20,623 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 446.0) internal successors, (8474), 19 states have internal predecessors, (8474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:20,623 INFO L175 Difference]: Start difference. First operand has 358 places, 456 transitions, 10065 flow. Second operand 18 states and 2816 transitions. [2023-11-17 15:51:20,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 553 transitions, 11956 flow [2023-11-17 15:51:20,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 553 transitions, 11552 flow, removed 10 selfloop flow, removed 18 redundant places. [2023-11-17 15:51:20,863 INFO L231 Difference]: Finished difference. Result has 358 places, 472 transitions, 10756 flow [2023-11-17 15:51:20,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=9632, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10756, PETRI_PLACES=358, PETRI_TRANSITIONS=472} [2023-11-17 15:51:20,863 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 332 predicate places. [2023-11-17 15:51:20,863 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 472 transitions, 10756 flow [2023-11-17 15:51:20,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 149.9090909090909) internal successors, (1649), 11 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:20,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:20,864 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:20,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-11-17 15:51:20,864 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 15:51:20,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:20,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2127164785, now seen corresponding path program 18 times [2023-11-17 15:51:20,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:20,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783114022] [2023-11-17 15:51:20,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:20,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:21,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:21,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783114022] [2023-11-17 15:51:21,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783114022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:21,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:21,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-17 15:51:21,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348515483] [2023-11-17 15:51:21,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:21,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 15:51:21,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:21,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 15:51:21,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-11-17 15:51:21,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 446 [2023-11-17 15:51:21,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 472 transitions, 10756 flow. Second operand has 14 states, 14 states have (on average 141.5) internal successors, (1981), 14 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:21,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:21,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 446 [2023-11-17 15:51:21,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:22,744 INFO L124 PetriNetUnfolderBase]: 2134/3958 cut-off events. [2023-11-17 15:51:22,744 INFO L125 PetriNetUnfolderBase]: For 59744/59744 co-relation queries the response was YES. [2023-11-17 15:51:22,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30940 conditions, 3958 events. 2134/3958 cut-off events. For 59744/59744 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 25955 event pairs, 281 based on Foata normal form. 1/3959 useless extension candidates. Maximal degree in co-relation 30831. Up to 1522 conditions per place. [2023-11-17 15:51:22,775 INFO L140 encePairwiseOnDemand]: 430/446 looper letters, 298 selfloop transitions, 298 changer transitions 6/602 dead transitions. [2023-11-17 15:51:22,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 602 transitions, 13662 flow [2023-11-17 15:51:22,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-17 15:51:22,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-17 15:51:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3675 transitions. [2023-11-17 15:51:22,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3295964125560538 [2023-11-17 15:51:22,778 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3675 transitions. [2023-11-17 15:51:22,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3675 transitions. [2023-11-17 15:51:22,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:22,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3675 transitions. [2023-11-17 15:51:22,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 147.0) internal successors, (3675), 25 states have internal predecessors, (3675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:22,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 446.0) internal successors, (11596), 26 states have internal predecessors, (11596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:22,785 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 446.0) internal successors, (11596), 26 states have internal predecessors, (11596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:22,785 INFO L175 Difference]: Start difference. First operand has 358 places, 472 transitions, 10756 flow. Second operand 25 states and 3675 transitions. [2023-11-17 15:51:22,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 602 transitions, 13662 flow [2023-11-17 15:51:23,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 602 transitions, 13266 flow, removed 38 selfloop flow, removed 13 redundant places. [2023-11-17 15:51:23,088 INFO L231 Difference]: Finished difference. Result has 375 places, 513 transitions, 12275 flow [2023-11-17 15:51:23,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=10438, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=12275, PETRI_PLACES=375, PETRI_TRANSITIONS=513} [2023-11-17 15:51:23,089 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 349 predicate places. [2023-11-17 15:51:23,089 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 513 transitions, 12275 flow [2023-11-17 15:51:23,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 141.5) internal successors, (1981), 14 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:23,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:23,089 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:23,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-11-17 15:51:23,089 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 15:51:23,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:23,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1751429419, now seen corresponding path program 19 times [2023-11-17 15:51:23,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:23,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317059921] [2023-11-17 15:51:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:23,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:23,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:23,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317059921] [2023-11-17 15:51:23,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317059921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:23,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:23,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:51:23,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095119499] [2023-11-17 15:51:23,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:23,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:51:23,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:23,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:51:23,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:51:23,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 446 [2023-11-17 15:51:23,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 513 transitions, 12275 flow. Second operand has 13 states, 13 states have (on average 138.6153846153846) internal successors, (1802), 13 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:23,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:23,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 446 [2023-11-17 15:51:23,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:25,119 INFO L124 PetriNetUnfolderBase]: 2256/4180 cut-off events. [2023-11-17 15:51:25,120 INFO L125 PetriNetUnfolderBase]: For 66231/66231 co-relation queries the response was YES. [2023-11-17 15:51:25,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33655 conditions, 4180 events. 2256/4180 cut-off events. For 66231/66231 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 27747 event pairs, 121 based on Foata normal form. 1/4181 useless extension candidates. Maximal degree in co-relation 33541. Up to 767 conditions per place. [2023-11-17 15:51:25,161 INFO L140 encePairwiseOnDemand]: 431/446 looper letters, 264 selfloop transitions, 404 changer transitions 5/673 dead transitions. [2023-11-17 15:51:25,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 673 transitions, 15277 flow [2023-11-17 15:51:25,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-17 15:51:25,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-17 15:51:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4193 transitions. [2023-11-17 15:51:25,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3241843203958559 [2023-11-17 15:51:25,164 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4193 transitions. [2023-11-17 15:51:25,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4193 transitions. [2023-11-17 15:51:25,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:25,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4193 transitions. [2023-11-17 15:51:25,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 144.58620689655172) internal successors, (4193), 29 states have internal predecessors, (4193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:25,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 446.0) internal successors, (13380), 30 states have internal predecessors, (13380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:25,172 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 446.0) internal successors, (13380), 30 states have internal predecessors, (13380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:25,172 INFO L175 Difference]: Start difference. First operand has 375 places, 513 transitions, 12275 flow. Second operand 29 states and 4193 transitions. [2023-11-17 15:51:25,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 673 transitions, 15277 flow [2023-11-17 15:51:25,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 673 transitions, 14889 flow, removed 31 selfloop flow, removed 8 redundant places. [2023-11-17 15:51:25,559 INFO L231 Difference]: Finished difference. Result has 403 places, 547 transitions, 13874 flow [2023-11-17 15:51:25,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=11943, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=371, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=13874, PETRI_PLACES=403, PETRI_TRANSITIONS=547} [2023-11-17 15:51:25,560 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 377 predicate places. [2023-11-17 15:51:25,560 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 547 transitions, 13874 flow [2023-11-17 15:51:25,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 138.6153846153846) internal successors, (1802), 13 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:25,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:25,560 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:25,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-11-17 15:51:25,561 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 15:51:25,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:25,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1063746811, now seen corresponding path program 20 times [2023-11-17 15:51:25,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:25,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746131011] [2023-11-17 15:51:25,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:25,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:25,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:25,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746131011] [2023-11-17 15:51:25,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746131011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:25,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:25,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:51:25,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981610760] [2023-11-17 15:51:25,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:25,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:51:25,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:25,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:51:25,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:51:25,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 446 [2023-11-17 15:51:25,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 547 transitions, 13874 flow. Second operand has 11 states, 11 states have (on average 149.9090909090909) internal successors, (1649), 11 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:25,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:25,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 446 [2023-11-17 15:51:25,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:27,120 INFO L124 PetriNetUnfolderBase]: 2287/4250 cut-off events. [2023-11-17 15:51:27,121 INFO L125 PetriNetUnfolderBase]: For 77276/77276 co-relation queries the response was YES. [2023-11-17 15:51:27,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35362 conditions, 4250 events. 2287/4250 cut-off events. For 77276/77276 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 28412 event pairs, 306 based on Foata normal form. 14/4264 useless extension candidates. Maximal degree in co-relation 35241. Up to 1569 conditions per place. [2023-11-17 15:51:27,167 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 312 selfloop transitions, 287 changer transitions 9/608 dead transitions. [2023-11-17 15:51:27,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 608 transitions, 15530 flow [2023-11-17 15:51:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 15:51:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 15:51:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2643 transitions. [2023-11-17 15:51:27,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485887628594039 [2023-11-17 15:51:27,169 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2643 transitions. [2023-11-17 15:51:27,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2643 transitions. [2023-11-17 15:51:27,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:27,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2643 transitions. [2023-11-17 15:51:27,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 155.47058823529412) internal successors, (2643), 17 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:27,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 446.0) internal successors, (8028), 18 states have internal predecessors, (8028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:27,174 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 446.0) internal successors, (8028), 18 states have internal predecessors, (8028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:27,174 INFO L175 Difference]: Start difference. First operand has 403 places, 547 transitions, 13874 flow. Second operand 17 states and 2643 transitions. [2023-11-17 15:51:27,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 608 transitions, 15530 flow [2023-11-17 15:51:27,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 608 transitions, 15222 flow, removed 33 selfloop flow, removed 10 redundant places. [2023-11-17 15:51:27,631 INFO L231 Difference]: Finished difference. Result has 414 places, 551 transitions, 14294 flow [2023-11-17 15:51:27,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=13532, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=14294, PETRI_PLACES=414, PETRI_TRANSITIONS=551} [2023-11-17 15:51:27,631 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 388 predicate places. [2023-11-17 15:51:27,631 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 551 transitions, 14294 flow [2023-11-17 15:51:27,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 149.9090909090909) internal successors, (1649), 11 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:27,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:27,632 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:27,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-11-17 15:51:27,632 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 15:51:27,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:27,632 INFO L85 PathProgramCache]: Analyzing trace with hash -943736127, now seen corresponding path program 21 times [2023-11-17 15:51:27,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:27,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854748207] [2023-11-17 15:51:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:27,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-17 15:51:28,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:28,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854748207] [2023-11-17 15:51:28,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854748207] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:28,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299014226] [2023-11-17 15:51:28,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:51:28,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:28,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:51:28,439 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 15:51:28,439 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 15:51:28,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 15:51:28,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:51:28,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 15:51:28,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:51:28,833 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-17 15:51:28,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 39 [2023-11-17 15:51:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:28,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:51:28,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299014226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:28,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:51:28,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 26 [2023-11-17 15:51:28,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588877916] [2023-11-17 15:51:28,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:28,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:51:28,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:28,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:51:28,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2023-11-17 15:51:28,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 446 [2023-11-17 15:51:28,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 551 transitions, 14294 flow. Second operand has 11 states, 11 states have (on average 149.9090909090909) internal successors, (1649), 11 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:28,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:28,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 446 [2023-11-17 15:51:28,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:30,145 INFO L124 PetriNetUnfolderBase]: 2278/4218 cut-off events. [2023-11-17 15:51:30,145 INFO L125 PetriNetUnfolderBase]: For 80020/80020 co-relation queries the response was YES. [2023-11-17 15:51:30,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35757 conditions, 4218 events. 2278/4218 cut-off events. For 80020/80020 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 28036 event pairs, 799 based on Foata normal form. 1/4219 useless extension candidates. Maximal degree in co-relation 35631. Up to 2813 conditions per place. [2023-11-17 15:51:30,192 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 407 selfloop transitions, 177 changer transitions 5/589 dead transitions. [2023-11-17 15:51:30,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 589 transitions, 15672 flow [2023-11-17 15:51:30,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:51:30,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:51:30,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1864 transitions. [2023-11-17 15:51:30,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482810164424514 [2023-11-17 15:51:30,194 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1864 transitions. [2023-11-17 15:51:30,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1864 transitions. [2023-11-17 15:51:30,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:30,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1864 transitions. [2023-11-17 15:51:30,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 155.33333333333334) internal successors, (1864), 12 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:30,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 446.0) internal successors, (5798), 13 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:30,198 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 446.0) internal successors, (5798), 13 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:30,198 INFO L175 Difference]: Start difference. First operand has 414 places, 551 transitions, 14294 flow. Second operand 12 states and 1864 transitions. [2023-11-17 15:51:30,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 589 transitions, 15672 flow [2023-11-17 15:51:30,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 589 transitions, 15445 flow, removed 28 selfloop flow, removed 10 redundant places. [2023-11-17 15:51:30,627 INFO L231 Difference]: Finished difference. Result has 414 places, 550 transitions, 14416 flow [2023-11-17 15:51:30,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=14073, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14416, PETRI_PLACES=414, PETRI_TRANSITIONS=550} [2023-11-17 15:51:30,628 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 388 predicate places. [2023-11-17 15:51:30,628 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 550 transitions, 14416 flow [2023-11-17 15:51:30,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 149.9090909090909) internal successors, (1649), 11 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:30,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:30,628 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:30,633 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 15:51:30,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:30,831 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 15:51:30,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:30,831 INFO L85 PathProgramCache]: Analyzing trace with hash -575938775, now seen corresponding path program 22 times [2023-11-17 15:51:30,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:30,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398511746] [2023-11-17 15:51:30,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:30,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:31,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:31,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398511746] [2023-11-17 15:51:31,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398511746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:31,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:31,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:51:31,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528292326] [2023-11-17 15:51:31,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:31,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:51:31,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:31,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:51:31,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:51:31,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 446 [2023-11-17 15:51:31,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 550 transitions, 14416 flow. Second operand has 13 states, 13 states have (on average 137.6153846153846) internal successors, (1789), 13 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:31,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:31,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 446 [2023-11-17 15:51:31,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:33,187 INFO L124 PetriNetUnfolderBase]: 2429/4482 cut-off events. [2023-11-17 15:51:33,187 INFO L125 PetriNetUnfolderBase]: For 84728/84728 co-relation queries the response was YES. [2023-11-17 15:51:33,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37392 conditions, 4482 events. 2429/4482 cut-off events. For 84728/84728 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 30006 event pairs, 170 based on Foata normal form. 1/4483 useless extension candidates. Maximal degree in co-relation 37269. Up to 791 conditions per place. [2023-11-17 15:51:33,228 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 254 selfloop transitions, 432 changer transitions 5/691 dead transitions. [2023-11-17 15:51:33,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 691 transitions, 16973 flow [2023-11-17 15:51:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 15:51:33,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 15:51:33,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3736 transitions. [2023-11-17 15:51:33,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.322180062090376 [2023-11-17 15:51:33,231 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3736 transitions. [2023-11-17 15:51:33,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3736 transitions. [2023-11-17 15:51:33,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:33,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3736 transitions. [2023-11-17 15:51:33,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 143.69230769230768) internal successors, (3736), 26 states have internal predecessors, (3736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:33,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 446.0) internal successors, (12042), 27 states have internal predecessors, (12042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:33,238 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 446.0) internal successors, (12042), 27 states have internal predecessors, (12042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:33,238 INFO L175 Difference]: Start difference. First operand has 414 places, 550 transitions, 14416 flow. Second operand 26 states and 3736 transitions. [2023-11-17 15:51:33,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 691 transitions, 16973 flow [2023-11-17 15:51:33,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 691 transitions, 16443 flow, removed 9 selfloop flow, removed 14 redundant places. [2023-11-17 15:51:33,682 INFO L231 Difference]: Finished difference. Result has 430 places, 578 transitions, 15528 flow [2023-11-17 15:51:33,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=13898, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=407, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=15528, PETRI_PLACES=430, PETRI_TRANSITIONS=578} [2023-11-17 15:51:33,683 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 404 predicate places. [2023-11-17 15:51:33,683 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 578 transitions, 15528 flow [2023-11-17 15:51:33,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 137.6153846153846) internal successors, (1789), 13 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:33,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:33,684 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:33,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-11-17 15:51:33,684 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 15:51:33,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:33,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1145198757, now seen corresponding path program 23 times [2023-11-17 15:51:33,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:33,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9110518] [2023-11-17 15:51:33,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:33,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:34,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:34,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9110518] [2023-11-17 15:51:34,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9110518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:34,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:34,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:51:34,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206585005] [2023-11-17 15:51:34,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:34,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:51:34,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:34,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:51:34,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:51:34,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 446 [2023-11-17 15:51:34,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 578 transitions, 15528 flow. Second operand has 13 states, 13 states have (on average 141.6153846153846) internal successors, (1841), 13 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:34,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:34,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 446 [2023-11-17 15:51:34,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:35,544 INFO L124 PetriNetUnfolderBase]: 2430/4487 cut-off events. [2023-11-17 15:51:35,544 INFO L125 PetriNetUnfolderBase]: For 92205/92205 co-relation queries the response was YES. [2023-11-17 15:51:35,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39160 conditions, 4487 events. 2430/4487 cut-off events. For 92205/92205 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 30208 event pairs, 259 based on Foata normal form. 5/4492 useless extension candidates. Maximal degree in co-relation 39032. Up to 1111 conditions per place. [2023-11-17 15:51:35,594 INFO L140 encePairwiseOnDemand]: 431/446 looper letters, 260 selfloop transitions, 376 changer transitions 10/646 dead transitions. [2023-11-17 15:51:35,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 646 transitions, 17266 flow [2023-11-17 15:51:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 15:51:35,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 15:51:35,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2799 transitions. [2023-11-17 15:51:35,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303044607033278 [2023-11-17 15:51:35,596 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2799 transitions. [2023-11-17 15:51:35,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2799 transitions. [2023-11-17 15:51:35,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:35,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2799 transitions. [2023-11-17 15:51:35,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 147.31578947368422) internal successors, (2799), 19 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:35,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 446.0) internal successors, (8920), 20 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:35,601 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 446.0) internal successors, (8920), 20 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:35,601 INFO L175 Difference]: Start difference. First operand has 430 places, 578 transitions, 15528 flow. Second operand 19 states and 2799 transitions. [2023-11-17 15:51:35,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 646 transitions, 17266 flow [2023-11-17 15:51:36,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 646 transitions, 16858 flow, removed 46 selfloop flow, removed 11 redundant places. [2023-11-17 15:51:36,116 INFO L231 Difference]: Finished difference. Result has 439 places, 578 transitions, 15979 flow [2023-11-17 15:51:36,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=15135, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=375, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=15979, PETRI_PLACES=439, PETRI_TRANSITIONS=578} [2023-11-17 15:51:36,117 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 413 predicate places. [2023-11-17 15:51:36,117 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 578 transitions, 15979 flow [2023-11-17 15:51:36,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 141.6153846153846) internal successors, (1841), 13 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:36,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:36,117 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:36,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-11-17 15:51:36,117 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 15:51:36,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:36,117 INFO L85 PathProgramCache]: Analyzing trace with hash 582623823, now seen corresponding path program 24 times [2023-11-17 15:51:36,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:36,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249293185] [2023-11-17 15:51:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:36,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:36,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:36,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249293185] [2023-11-17 15:51:36,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249293185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:36,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:36,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:51:36,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267459669] [2023-11-17 15:51:36,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:36,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:51:36,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:36,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:51:36,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:51:36,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 446 [2023-11-17 15:51:36,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 578 transitions, 15979 flow. Second operand has 13 states, 13 states have (on average 137.6153846153846) internal successors, (1789), 13 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:36,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:36,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 446 [2023-11-17 15:51:36,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:38,142 INFO L124 PetriNetUnfolderBase]: 2426/4483 cut-off events. [2023-11-17 15:51:38,142 INFO L125 PetriNetUnfolderBase]: For 99578/99578 co-relation queries the response was YES. [2023-11-17 15:51:38,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39634 conditions, 4483 events. 2426/4483 cut-off events. For 99578/99578 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 30099 event pairs, 275 based on Foata normal form. 5/4488 useless extension candidates. Maximal degree in co-relation 39506. Up to 1053 conditions per place. [2023-11-17 15:51:38,186 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 248 selfloop transitions, 380 changer transitions 12/640 dead transitions. [2023-11-17 15:51:38,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 640 transitions, 17649 flow [2023-11-17 15:51:38,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 15:51:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 15:51:38,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2575 transitions. [2023-11-17 15:51:38,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32075236671649227 [2023-11-17 15:51:38,188 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2575 transitions. [2023-11-17 15:51:38,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2575 transitions. [2023-11-17 15:51:38,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:38,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2575 transitions. [2023-11-17 15:51:38,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 143.05555555555554) internal successors, (2575), 18 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:38,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 446.0) internal successors, (8474), 19 states have internal predecessors, (8474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:38,193 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 446.0) internal successors, (8474), 19 states have internal predecessors, (8474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:38,193 INFO L175 Difference]: Start difference. First operand has 439 places, 578 transitions, 15979 flow. Second operand 18 states and 2575 transitions. [2023-11-17 15:51:38,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 640 transitions, 17649 flow [2023-11-17 15:51:38,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 640 transitions, 16967 flow, removed 14 selfloop flow, removed 17 redundant places. [2023-11-17 15:51:38,696 INFO L231 Difference]: Finished difference. Result has 440 places, 576 transitions, 16115 flow [2023-11-17 15:51:38,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=15303, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=379, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=16115, PETRI_PLACES=440, PETRI_TRANSITIONS=576} [2023-11-17 15:51:38,697 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 414 predicate places. [2023-11-17 15:51:38,697 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 576 transitions, 16115 flow [2023-11-17 15:51:38,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 137.6153846153846) internal successors, (1789), 13 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:38,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:38,698 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:38,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-11-17 15:51:38,698 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 15:51:38,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:38,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1998756935, now seen corresponding path program 25 times [2023-11-17 15:51:38,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:38,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666677220] [2023-11-17 15:51:38,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:38,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:39,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:39,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666677220] [2023-11-17 15:51:39,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666677220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:39,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:39,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-17 15:51:39,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979705900] [2023-11-17 15:51:39,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:39,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 15:51:39,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:39,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 15:51:39,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-17 15:51:39,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 446 [2023-11-17 15:51:39,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 576 transitions, 16115 flow. Second operand has 14 states, 14 states have (on average 137.5) internal successors, (1925), 14 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:39,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:39,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 446 [2023-11-17 15:51:39,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:41,104 INFO L124 PetriNetUnfolderBase]: 2543/4693 cut-off events. [2023-11-17 15:51:41,105 INFO L125 PetriNetUnfolderBase]: For 102738/102738 co-relation queries the response was YES. [2023-11-17 15:51:41,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41212 conditions, 4693 events. 2543/4693 cut-off events. For 102738/102738 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 31682 event pairs, 265 based on Foata normal form. 7/4700 useless extension candidates. Maximal degree in co-relation 41084. Up to 800 conditions per place. [2023-11-17 15:51:41,158 INFO L140 encePairwiseOnDemand]: 432/446 looper letters, 281 selfloop transitions, 442 changer transitions 9/732 dead transitions. [2023-11-17 15:51:41,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 732 transitions, 18941 flow [2023-11-17 15:51:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 15:51:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 15:51:41,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3890 transitions. [2023-11-17 15:51:41,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32303604052482976 [2023-11-17 15:51:41,160 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3890 transitions. [2023-11-17 15:51:41,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3890 transitions. [2023-11-17 15:51:41,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:41,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3890 transitions. [2023-11-17 15:51:41,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 144.07407407407408) internal successors, (3890), 27 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:41,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 446.0) internal successors, (12488), 28 states have internal predecessors, (12488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:41,168 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 446.0) internal successors, (12488), 28 states have internal predecessors, (12488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:41,168 INFO L175 Difference]: Start difference. First operand has 440 places, 576 transitions, 16115 flow. Second operand 27 states and 3890 transitions. [2023-11-17 15:51:41,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 732 transitions, 18941 flow [2023-11-17 15:51:41,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 732 transitions, 18245 flow, removed 19 selfloop flow, removed 15 redundant places. [2023-11-17 15:51:41,847 INFO L231 Difference]: Finished difference. Result has 456 places, 592 transitions, 17043 flow [2023-11-17 15:51:41,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=15451, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=424, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=17043, PETRI_PLACES=456, PETRI_TRANSITIONS=592} [2023-11-17 15:51:41,848 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 430 predicate places. [2023-11-17 15:51:41,848 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 592 transitions, 17043 flow [2023-11-17 15:51:41,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 137.5) internal successors, (1925), 14 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:41,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:41,848 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:41,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-11-17 15:51:41,848 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 15:51:41,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:41,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1316581267, now seen corresponding path program 26 times [2023-11-17 15:51:41,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:41,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645901958] [2023-11-17 15:51:41,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:41,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:42,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:42,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645901958] [2023-11-17 15:51:42,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645901958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:42,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:42,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:51:42,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737478726] [2023-11-17 15:51:42,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:42,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:51:42,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:42,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:51:42,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:51:42,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 446 [2023-11-17 15:51:42,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 592 transitions, 17043 flow. Second operand has 13 states, 13 states have (on average 141.6153846153846) internal successors, (1841), 13 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:42,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:42,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 446 [2023-11-17 15:51:42,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:44,202 INFO L124 PetriNetUnfolderBase]: 2880/5309 cut-off events. [2023-11-17 15:51:44,202 INFO L125 PetriNetUnfolderBase]: For 122832/122832 co-relation queries the response was YES. [2023-11-17 15:51:44,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47903 conditions, 5309 events. 2880/5309 cut-off events. For 122832/122832 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 36796 event pairs, 197 based on Foata normal form. 25/5334 useless extension candidates. Maximal degree in co-relation 47771. Up to 1444 conditions per place. [2023-11-17 15:51:44,252 INFO L140 encePairwiseOnDemand]: 430/446 looper letters, 257 selfloop transitions, 439 changer transitions 12/708 dead transitions. [2023-11-17 15:51:44,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 708 transitions, 20469 flow [2023-11-17 15:51:44,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 15:51:44,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 15:51:44,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2933 transitions. [2023-11-17 15:51:44,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3288116591928251 [2023-11-17 15:51:44,254 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2933 transitions. [2023-11-17 15:51:44,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2933 transitions. [2023-11-17 15:51:44,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:44,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2933 transitions. [2023-11-17 15:51:44,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 146.65) internal successors, (2933), 20 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:44,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 446.0) internal successors, (9366), 21 states have internal predecessors, (9366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:44,260 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 446.0) internal successors, (9366), 21 states have internal predecessors, (9366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:44,260 INFO L175 Difference]: Start difference. First operand has 456 places, 592 transitions, 17043 flow. Second operand 20 states and 2933 transitions. [2023-11-17 15:51:44,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 708 transitions, 20469 flow [2023-11-17 15:51:44,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 708 transitions, 19806 flow, removed 35 selfloop flow, removed 17 redundant places. [2023-11-17 15:51:44,935 INFO L231 Difference]: Finished difference. Result has 464 places, 639 transitions, 19092 flow [2023-11-17 15:51:44,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=16429, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=389, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=19092, PETRI_PLACES=464, PETRI_TRANSITIONS=639} [2023-11-17 15:51:44,935 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 438 predicate places. [2023-11-17 15:51:44,935 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 639 transitions, 19092 flow [2023-11-17 15:51:44,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 141.6153846153846) internal successors, (1841), 13 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:44,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:44,936 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:44,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-11-17 15:51:44,936 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 15:51:44,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:44,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1555567869, now seen corresponding path program 27 times [2023-11-17 15:51:44,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:44,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347736439] [2023-11-17 15:51:44,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:44,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:45,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:45,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347736439] [2023-11-17 15:51:45,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347736439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:45,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:45,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:51:45,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601522090] [2023-11-17 15:51:45,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:45,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:51:45,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:45,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:51:45,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:51:45,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 446 [2023-11-17 15:51:45,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 639 transitions, 19092 flow. Second operand has 13 states, 13 states have (on average 141.6153846153846) internal successors, (1841), 13 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:45,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:45,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 446 [2023-11-17 15:51:45,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:47,396 INFO L124 PetriNetUnfolderBase]: 2898/5323 cut-off events. [2023-11-17 15:51:47,397 INFO L125 PetriNetUnfolderBase]: For 135527/135527 co-relation queries the response was YES. [2023-11-17 15:51:47,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49944 conditions, 5323 events. 2898/5323 cut-off events. For 135527/135527 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 36580 event pairs, 333 based on Foata normal form. 5/5328 useless extension candidates. Maximal degree in co-relation 49808. Up to 1732 conditions per place. [2023-11-17 15:51:47,451 INFO L140 encePairwiseOnDemand]: 432/446 looper letters, 249 selfloop transitions, 448 changer transitions 8/705 dead transitions. [2023-11-17 15:51:47,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 705 transitions, 21021 flow [2023-11-17 15:51:47,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 15:51:47,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 15:51:47,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2651 transitions. [2023-11-17 15:51:47,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3302192326856004 [2023-11-17 15:51:47,454 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2651 transitions. [2023-11-17 15:51:47,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2651 transitions. [2023-11-17 15:51:47,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:47,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2651 transitions. [2023-11-17 15:51:47,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 147.27777777777777) internal successors, (2651), 18 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:47,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 446.0) internal successors, (8474), 19 states have internal predecessors, (8474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:47,459 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 446.0) internal successors, (8474), 19 states have internal predecessors, (8474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:47,459 INFO L175 Difference]: Start difference. First operand has 464 places, 639 transitions, 19092 flow. Second operand 18 states and 2651 transitions. [2023-11-17 15:51:47,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 705 transitions, 21021 flow [2023-11-17 15:51:48,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 705 transitions, 20644 flow, removed 29 selfloop flow, removed 13 redundant places. [2023-11-17 15:51:48,252 INFO L231 Difference]: Finished difference. Result has 472 places, 645 transitions, 20247 flow [2023-11-17 15:51:48,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=18726, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=440, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=20247, PETRI_PLACES=472, PETRI_TRANSITIONS=645} [2023-11-17 15:51:48,252 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 446 predicate places. [2023-11-17 15:51:48,252 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 645 transitions, 20247 flow [2023-11-17 15:51:48,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 141.6153846153846) internal successors, (1841), 13 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:48,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:48,253 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:48,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-11-17 15:51:48,253 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 15:51:48,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:48,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1186662903, now seen corresponding path program 28 times [2023-11-17 15:51:48,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:48,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999045672] [2023-11-17 15:51:48,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:48,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:48,872 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:48,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:48,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999045672] [2023-11-17 15:51:48,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999045672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:48,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:51:48,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-17 15:51:48,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83971617] [2023-11-17 15:51:48,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:48,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 15:51:48,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:48,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 15:51:48,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-17 15:51:48,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 446 [2023-11-17 15:51:48,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 645 transitions, 20247 flow. Second operand has 14 states, 14 states have (on average 137.5) internal successors, (1925), 14 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:48,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:48,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 446 [2023-11-17 15:51:48,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:50,862 INFO L124 PetriNetUnfolderBase]: 2900/5313 cut-off events. [2023-11-17 15:51:50,862 INFO L125 PetriNetUnfolderBase]: For 157261/157261 co-relation queries the response was YES. [2023-11-17 15:51:50,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51333 conditions, 5313 events. 2900/5313 cut-off events. For 157261/157261 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 36546 event pairs, 486 based on Foata normal form. 1/5314 useless extension candidates. Maximal degree in co-relation 51196. Up to 2314 conditions per place. [2023-11-17 15:51:50,919 INFO L140 encePairwiseOnDemand]: 432/446 looper letters, 353 selfloop transitions, 338 changer transitions 6/697 dead transitions. [2023-11-17 15:51:50,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 697 transitions, 21943 flow [2023-11-17 15:51:50,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 15:51:50,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 15:51:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2841 transitions. [2023-11-17 15:51:50,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31849775784753365 [2023-11-17 15:51:50,922 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2841 transitions. [2023-11-17 15:51:50,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2841 transitions. [2023-11-17 15:51:50,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:50,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2841 transitions. [2023-11-17 15:51:50,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 142.05) internal successors, (2841), 20 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:50,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 446.0) internal successors, (9366), 21 states have internal predecessors, (9366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:50,927 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 446.0) internal successors, (9366), 21 states have internal predecessors, (9366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:50,927 INFO L175 Difference]: Start difference. First operand has 472 places, 645 transitions, 20247 flow. Second operand 20 states and 2841 transitions. [2023-11-17 15:51:50,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 697 transitions, 21943 flow [2023-11-17 15:51:52,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 697 transitions, 21350 flow, removed 11 selfloop flow, removed 14 redundant places. [2023-11-17 15:51:52,018 INFO L231 Difference]: Finished difference. Result has 478 places, 646 transitions, 20406 flow [2023-11-17 15:51:52,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=19658, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=20406, PETRI_PLACES=478, PETRI_TRANSITIONS=646} [2023-11-17 15:51:52,019 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 452 predicate places. [2023-11-17 15:51:52,019 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 646 transitions, 20406 flow [2023-11-17 15:51:52,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 137.5) internal successors, (1925), 14 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:52,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:52,019 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:52,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-11-17 15:51:52,019 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 15:51:52,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1866326258, now seen corresponding path program 1 times [2023-11-17 15:51:52,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:52,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762479321] [2023-11-17 15:51:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:52,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:52,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:52,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762479321] [2023-11-17 15:51:52,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762479321] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:52,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707127756] [2023-11-17 15:51:52,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:52,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:52,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:51:52,063 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 15:51:52,064 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 15:51:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:52,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 15:51:52,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:51:52,313 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:52,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:51:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:52,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707127756] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:51:52,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:51:52,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-17 15:51:52,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162148293] [2023-11-17 15:51:52,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:51:52,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:51:52,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:52,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:51:52,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:51:52,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 446 [2023-11-17 15:51:52,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 646 transitions, 20406 flow. Second operand has 10 states, 10 states have (on average 191.6) internal successors, (1916), 10 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:52,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:52,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 446 [2023-11-17 15:51:52,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:54,635 INFO L124 PetriNetUnfolderBase]: 3895/6869 cut-off events. [2023-11-17 15:51:54,635 INFO L125 PetriNetUnfolderBase]: For 188660/188660 co-relation queries the response was YES. [2023-11-17 15:51:54,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64860 conditions, 6869 events. 3895/6869 cut-off events. For 188660/188660 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 43152 event pairs, 956 based on Foata normal form. 378/7247 useless extension candidates. Maximal degree in co-relation 64724. Up to 1784 conditions per place. [2023-11-17 15:51:54,706 INFO L140 encePairwiseOnDemand]: 441/446 looper letters, 802 selfloop transitions, 101 changer transitions 1/904 dead transitions. [2023-11-17 15:51:54,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 904 transitions, 27787 flow [2023-11-17 15:51:54,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:51:54,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:51:54,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1412 transitions. [2023-11-17 15:51:54,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227418321588725 [2023-11-17 15:51:54,707 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1412 transitions. [2023-11-17 15:51:54,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1412 transitions. [2023-11-17 15:51:54,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:54,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1412 transitions. [2023-11-17 15:51:54,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.71428571428572) internal successors, (1412), 7 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:54,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 446.0) internal successors, (3568), 8 states have internal predecessors, (3568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:54,710 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 446.0) internal successors, (3568), 8 states have internal predecessors, (3568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:54,710 INFO L175 Difference]: Start difference. First operand has 478 places, 646 transitions, 20406 flow. Second operand 7 states and 1412 transitions. [2023-11-17 15:51:54,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 904 transitions, 27787 flow [2023-11-17 15:51:56,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 904 transitions, 26598 flow, removed 17 selfloop flow, removed 19 redundant places. [2023-11-17 15:51:56,267 INFO L231 Difference]: Finished difference. Result has 467 places, 655 transitions, 20027 flow [2023-11-17 15:51:56,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=19563, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20027, PETRI_PLACES=467, PETRI_TRANSITIONS=655} [2023-11-17 15:51:56,269 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 441 predicate places. [2023-11-17 15:51:56,270 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 655 transitions, 20027 flow [2023-11-17 15:51:56,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 191.6) internal successors, (1916), 10 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:56,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:56,270 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:56,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-17 15:51:56,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:56,475 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 15:51:56,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:56,475 INFO L85 PathProgramCache]: Analyzing trace with hash -571949857, now seen corresponding path program 1 times [2023-11-17 15:51:56,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:56,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308088901] [2023-11-17 15:51:56,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:56,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:56,834 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:56,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:56,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308088901] [2023-11-17 15:51:56,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308088901] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:56,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248859578] [2023-11-17 15:51:56,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:56,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:56,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:51:56,836 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 15:51:56,837 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 15:51:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:57,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:51:57,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:51:57,268 INFO L349 Elim1Store]: treesize reduction 48, result has 15.8 percent of original size [2023-11-17 15:51:57,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 33 [2023-11-17 15:51:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:51:57,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:51:57,839 INFO L349 Elim1Store]: treesize reduction 65, result has 80.5 percent of original size [2023-11-17 15:51:57,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 93 treesize of output 305 [2023-11-17 15:52:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:52:02,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248859578] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:52:02,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:52:02,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 8] total 25 [2023-11-17 15:52:02,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263547487] [2023-11-17 15:52:02,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:52:02,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 15:52:02,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:52:02,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 15:52:02,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2023-11-17 15:52:02,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 446 [2023-11-17 15:52:02,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 655 transitions, 20027 flow. Second operand has 25 states, 25 states have (on average 143.12) internal successors, (3578), 25 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 15:52:02,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:52:02,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 446 [2023-11-17 15:52:02,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:52:06,088 INFO L124 PetriNetUnfolderBase]: 4926/8542 cut-off events. [2023-11-17 15:52:06,088 INFO L125 PetriNetUnfolderBase]: For 233634/233634 co-relation queries the response was YES. [2023-11-17 15:52:06,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78253 conditions, 8542 events. 4926/8542 cut-off events. For 233634/233634 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 54873 event pairs, 235 based on Foata normal form. 12/8554 useless extension candidates. Maximal degree in co-relation 78118. Up to 1513 conditions per place. [2023-11-17 15:52:06,184 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 272 selfloop transitions, 603 changer transitions 2/877 dead transitions. [2023-11-17 15:52:06,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 877 transitions, 25153 flow [2023-11-17 15:52:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-17 15:52:06,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-17 15:52:06,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4746 transitions. [2023-11-17 15:52:06,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33253923766816146 [2023-11-17 15:52:06,187 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4746 transitions. [2023-11-17 15:52:06,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4746 transitions. [2023-11-17 15:52:06,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:52:06,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4746 transitions. [2023-11-17 15:52:06,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 148.3125) internal successors, (4746), 32 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:06,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 446.0) internal successors, (14718), 33 states have internal predecessors, (14718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:06,197 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 446.0) internal successors, (14718), 33 states have internal predecessors, (14718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:06,197 INFO L175 Difference]: Start difference. First operand has 467 places, 655 transitions, 20027 flow. Second operand 32 states and 4746 transitions. [2023-11-17 15:52:06,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 877 transitions, 25153 flow [2023-11-17 15:52:08,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 877 transitions, 25017 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-17 15:52:08,272 INFO L231 Difference]: Finished difference. Result has 497 places, 752 transitions, 23840 flow [2023-11-17 15:52:08,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=19878, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=504, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=23840, PETRI_PLACES=497, PETRI_TRANSITIONS=752} [2023-11-17 15:52:08,273 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 471 predicate places. [2023-11-17 15:52:08,273 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 752 transitions, 23840 flow [2023-11-17 15:52:08,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 143.12) internal successors, (3578), 25 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 15:52:08,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:52:08,274 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:52:08,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-17 15:52:08,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:52:08,478 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 15:52:08,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:52:08,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1973160539, now seen corresponding path program 2 times [2023-11-17 15:52:08,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:52:08,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404251710] [2023-11-17 15:52:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:52:08,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:52:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:52:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:52:08,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:52:08,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404251710] [2023-11-17 15:52:08,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404251710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:52:08,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:52:08,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 15:52:08,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850569245] [2023-11-17 15:52:08,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:52:08,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:52:08,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:52:08,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:52:08,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:52:08,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 446 [2023-11-17 15:52:08,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 752 transitions, 23840 flow. Second operand has 11 states, 11 states have (on average 154.0) internal successors, (1694), 11 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:08,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:52:08,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 446 [2023-11-17 15:52:08,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:52:11,602 INFO L124 PetriNetUnfolderBase]: 4962/8602 cut-off events. [2023-11-17 15:52:11,602 INFO L125 PetriNetUnfolderBase]: For 250990/250990 co-relation queries the response was YES. [2023-11-17 15:52:11,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84660 conditions, 8602 events. 4962/8602 cut-off events. For 250990/250990 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 54929 event pairs, 1375 based on Foata normal form. 12/8614 useless extension candidates. Maximal degree in co-relation 84522. Up to 5544 conditions per place. [2023-11-17 15:52:11,697 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 373 selfloop transitions, 445 changer transitions 3/821 dead transitions. [2023-11-17 15:52:11,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 821 transitions, 26920 flow [2023-11-17 15:52:11,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:52:11,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:52:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2237 transitions. [2023-11-17 15:52:11,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358263933376041 [2023-11-17 15:52:11,699 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2237 transitions. [2023-11-17 15:52:11,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2237 transitions. [2023-11-17 15:52:11,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:52:11,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2237 transitions. [2023-11-17 15:52:11,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 159.78571428571428) internal successors, (2237), 14 states have internal predecessors, (2237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:11,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:11,703 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:11,703 INFO L175 Difference]: Start difference. First operand has 497 places, 752 transitions, 23840 flow. Second operand 14 states and 2237 transitions. [2023-11-17 15:52:11,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 821 transitions, 26920 flow [2023-11-17 15:52:14,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 821 transitions, 25813 flow, removed 54 selfloop flow, removed 20 redundant places. [2023-11-17 15:52:14,417 INFO L231 Difference]: Finished difference. Result has 494 places, 768 transitions, 24385 flow [2023-11-17 15:52:14,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=22798, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=429, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=24385, PETRI_PLACES=494, PETRI_TRANSITIONS=768} [2023-11-17 15:52:14,418 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 468 predicate places. [2023-11-17 15:52:14,418 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 768 transitions, 24385 flow [2023-11-17 15:52:14,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 154.0) internal successors, (1694), 11 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:14,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:52:14,418 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:52:14,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-11-17 15:52:14,418 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 15:52:14,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:52:14,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1939818891, now seen corresponding path program 3 times [2023-11-17 15:52:14,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:52:14,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298771957] [2023-11-17 15:52:14,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:52:14,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:52:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:52:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:52:14,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:52:14,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298771957] [2023-11-17 15:52:14,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298771957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:52:14,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546026596] [2023-11-17 15:52:14,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:52:14,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:52:14,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:52:14,762 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 15:52:14,764 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 15:52:14,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:52:14,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:52:14,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-17 15:52:15,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:52:15,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:52:15,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-11-17 15:52:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:52:15,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:52:15,175 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-11-17 15:52:15,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 49 [2023-11-17 15:52:15,200 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:52:15,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546026596] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:52:15,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:52:15,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 17 [2023-11-17 15:52:15,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503610694] [2023-11-17 15:52:15,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:52:15,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 15:52:15,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:52:15,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 15:52:15,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:52:15,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 446 [2023-11-17 15:52:15,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 768 transitions, 24385 flow. Second operand has 17 states, 17 states have (on average 154.52941176470588) internal successors, (2627), 17 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 15:52:15,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:52:15,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 446 [2023-11-17 15:52:15,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:52:18,087 INFO L124 PetriNetUnfolderBase]: 4998/8662 cut-off events. [2023-11-17 15:52:18,087 INFO L125 PetriNetUnfolderBase]: For 258496/258496 co-relation queries the response was YES. [2023-11-17 15:52:18,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83463 conditions, 8662 events. 4998/8662 cut-off events. For 258496/258496 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 55267 event pairs, 1472 based on Foata normal form. 12/8674 useless extension candidates. Maximal degree in co-relation 83323. Up to 5556 conditions per place. [2023-11-17 15:52:18,187 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 366 selfloop transitions, 452 changer transitions 0/818 dead transitions. [2023-11-17 15:52:18,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 818 transitions, 27002 flow [2023-11-17 15:52:18,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:52:18,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:52:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2221 transitions. [2023-11-17 15:52:18,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3557014734144779 [2023-11-17 15:52:18,189 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2221 transitions. [2023-11-17 15:52:18,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2221 transitions. [2023-11-17 15:52:18,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:52:18,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2221 transitions. [2023-11-17 15:52:18,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 158.64285714285714) internal successors, (2221), 14 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:18,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:18,252 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:18,252 INFO L175 Difference]: Start difference. First operand has 494 places, 768 transitions, 24385 flow. Second operand 14 states and 2221 transitions. [2023-11-17 15:52:18,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 818 transitions, 27002 flow [2023-11-17 15:52:20,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 818 transitions, 26249 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-11-17 15:52:20,735 INFO L231 Difference]: Finished difference. Result has 501 places, 780 transitions, 25102 flow [2023-11-17 15:52:20,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=23642, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=440, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=25102, PETRI_PLACES=501, PETRI_TRANSITIONS=780} [2023-11-17 15:52:20,735 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 475 predicate places. [2023-11-17 15:52:20,736 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 780 transitions, 25102 flow [2023-11-17 15:52:20,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 154.52941176470588) internal successors, (2627), 17 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 15:52:20,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:52:20,736 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:52:20,741 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 15:52:20,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:52:20,941 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 15:52:20,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:52:20,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1129811191, now seen corresponding path program 4 times [2023-11-17 15:52:20,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:52:20,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976809352] [2023-11-17 15:52:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:52:20,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:52:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:52:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:52:21,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:52:21,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976809352] [2023-11-17 15:52:21,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976809352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:52:21,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:52:21,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 15:52:21,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359665550] [2023-11-17 15:52:21,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:52:21,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:52:21,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:52:21,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:52:21,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:52:21,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 446 [2023-11-17 15:52:21,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 780 transitions, 25102 flow. Second operand has 11 states, 11 states have (on average 154.0) internal successors, (1694), 11 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:21,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:52:21,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 446 [2023-11-17 15:52:21,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:52:24,171 INFO L124 PetriNetUnfolderBase]: 4974/8632 cut-off events. [2023-11-17 15:52:24,171 INFO L125 PetriNetUnfolderBase]: For 260668/260668 co-relation queries the response was YES. [2023-11-17 15:52:24,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83499 conditions, 8632 events. 4974/8632 cut-off events. For 260668/260668 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 55228 event pairs, 1443 based on Foata normal form. 12/8644 useless extension candidates. Maximal degree in co-relation 83358. Up to 5562 conditions per place. [2023-11-17 15:52:24,270 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 355 selfloop transitions, 462 changer transitions 2/819 dead transitions. [2023-11-17 15:52:24,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 819 transitions, 27305 flow [2023-11-17 15:52:24,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:52:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:52:24,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2226 transitions. [2023-11-17 15:52:24,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35650224215246634 [2023-11-17 15:52:24,272 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2226 transitions. [2023-11-17 15:52:24,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2226 transitions. [2023-11-17 15:52:24,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:52:24,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2226 transitions. [2023-11-17 15:52:24,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 159.0) internal successors, (2226), 14 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:24,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:24,276 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:24,276 INFO L175 Difference]: Start difference. First operand has 501 places, 780 transitions, 25102 flow. Second operand 14 states and 2226 transitions. [2023-11-17 15:52:24,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 819 transitions, 27305 flow [2023-11-17 15:52:26,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 819 transitions, 26652 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-17 15:52:26,808 INFO L231 Difference]: Finished difference. Result has 509 places, 781 transitions, 25466 flow [2023-11-17 15:52:26,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=24452, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=459, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=25466, PETRI_PLACES=509, PETRI_TRANSITIONS=781} [2023-11-17 15:52:26,809 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 483 predicate places. [2023-11-17 15:52:26,809 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 781 transitions, 25466 flow [2023-11-17 15:52:26,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 154.0) internal successors, (1694), 11 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:26,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:52:26,810 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:52:26,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-11-17 15:52:26,810 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 15:52:26,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:52:26,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1874513689, now seen corresponding path program 5 times [2023-11-17 15:52:26,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:52:26,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381309024] [2023-11-17 15:52:26,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:52:26,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:52:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:52:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:52:27,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:52:27,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381309024] [2023-11-17 15:52:27,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381309024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:52:27,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:52:27,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 15:52:27,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665123638] [2023-11-17 15:52:27,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:52:27,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:52:27,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:52:27,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:52:27,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:52:27,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 446 [2023-11-17 15:52:27,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 781 transitions, 25466 flow. Second operand has 11 states, 11 states have (on average 154.0) internal successors, (1694), 11 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:27,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:52:27,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 446 [2023-11-17 15:52:27,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:52:29,907 INFO L124 PetriNetUnfolderBase]: 4940/8558 cut-off events. [2023-11-17 15:52:29,908 INFO L125 PetriNetUnfolderBase]: For 264669/264669 co-relation queries the response was YES. [2023-11-17 15:52:29,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83150 conditions, 8558 events. 4940/8558 cut-off events. For 264669/264669 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 54655 event pairs, 1155 based on Foata normal form. 12/8570 useless extension candidates. Maximal degree in co-relation 83008. Up to 4374 conditions per place. [2023-11-17 15:52:30,015 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 336 selfloop transitions, 478 changer transitions 0/814 dead transitions. [2023-11-17 15:52:30,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 814 transitions, 27144 flow [2023-11-17 15:52:30,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:52:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:52:30,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2235 transitions. [2023-11-17 15:52:30,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3579436258808456 [2023-11-17 15:52:30,017 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2235 transitions. [2023-11-17 15:52:30,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2235 transitions. [2023-11-17 15:52:30,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:52:30,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2235 transitions. [2023-11-17 15:52:30,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 159.64285714285714) internal successors, (2235), 14 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:30,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:30,022 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:30,022 INFO L175 Difference]: Start difference. First operand has 509 places, 781 transitions, 25466 flow. Second operand 14 states and 2235 transitions. [2023-11-17 15:52:30,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 814 transitions, 27144 flow [2023-11-17 15:52:32,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 814 transitions, 26066 flow, removed 6 selfloop flow, removed 13 redundant places. [2023-11-17 15:52:32,461 INFO L231 Difference]: Finished difference. Result has 510 places, 776 transitions, 25199 flow [2023-11-17 15:52:32,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=24234, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=25199, PETRI_PLACES=510, PETRI_TRANSITIONS=776} [2023-11-17 15:52:32,461 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 484 predicate places. [2023-11-17 15:52:32,461 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 776 transitions, 25199 flow [2023-11-17 15:52:32,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 154.0) internal successors, (1694), 11 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:32,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:52:32,462 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:52:32,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-11-17 15:52:32,462 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 15:52:32,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:52:32,462 INFO L85 PathProgramCache]: Analyzing trace with hash -640187079, now seen corresponding path program 6 times [2023-11-17 15:52:32,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:52:32,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362300248] [2023-11-17 15:52:32,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:52:32,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:52:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:52:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:52:32,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:52:32,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362300248] [2023-11-17 15:52:32,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362300248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:52:32,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:52:32,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:52:32,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235654900] [2023-11-17 15:52:32,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:52:32,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:52:32,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:52:32,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:52:32,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:52:32,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 446 [2023-11-17 15:52:32,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 776 transitions, 25199 flow. Second operand has 12 states, 12 states have (on average 148.83333333333334) internal successors, (1786), 12 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:32,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:52:32,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 446 [2023-11-17 15:52:32,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:52:35,534 INFO L124 PetriNetUnfolderBase]: 4931/8553 cut-off events. [2023-11-17 15:52:35,534 INFO L125 PetriNetUnfolderBase]: For 261538/261538 co-relation queries the response was YES. [2023-11-17 15:52:35,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83290 conditions, 8553 events. 4931/8553 cut-off events. For 261538/261538 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 54654 event pairs, 1117 based on Foata normal form. 4/8557 useless extension candidates. Maximal degree in co-relation 83150. Up to 4744 conditions per place. [2023-11-17 15:52:35,640 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 350 selfloop transitions, 475 changer transitions 0/825 dead transitions. [2023-11-17 15:52:35,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 825 transitions, 27138 flow [2023-11-17 15:52:35,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:52:35,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:52:35,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2015 transitions. [2023-11-17 15:52:35,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3475336322869955 [2023-11-17 15:52:35,642 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2015 transitions. [2023-11-17 15:52:35,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2015 transitions. [2023-11-17 15:52:35,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:52:35,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2015 transitions. [2023-11-17 15:52:35,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 155.0) internal successors, (2015), 13 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:35,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 446.0) internal successors, (6244), 14 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:35,646 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 446.0) internal successors, (6244), 14 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:35,646 INFO L175 Difference]: Start difference. First operand has 510 places, 776 transitions, 25199 flow. Second operand 13 states and 2015 transitions. [2023-11-17 15:52:35,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 825 transitions, 27138 flow [2023-11-17 15:52:38,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 825 transitions, 26332 flow, removed 5 selfloop flow, removed 13 redundant places. [2023-11-17 15:52:38,071 INFO L231 Difference]: Finished difference. Result has 510 places, 775 transitions, 25366 flow [2023-11-17 15:52:38,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=24342, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=474, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=25366, PETRI_PLACES=510, PETRI_TRANSITIONS=775} [2023-11-17 15:52:38,072 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 484 predicate places. [2023-11-17 15:52:38,072 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 775 transitions, 25366 flow [2023-11-17 15:52:38,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 148.83333333333334) internal successors, (1786), 12 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:38,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:52:38,072 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:52:38,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-11-17 15:52:38,072 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 15:52:38,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:52:38,073 INFO L85 PathProgramCache]: Analyzing trace with hash -645944489, now seen corresponding path program 7 times [2023-11-17 15:52:38,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:52:38,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575952075] [2023-11-17 15:52:38,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:52:38,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:52:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:52:38,311 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:52:38,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:52:38,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575952075] [2023-11-17 15:52:38,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575952075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:52:38,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:52:38,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 15:52:38,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022535963] [2023-11-17 15:52:38,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:52:38,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:52:38,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:52:38,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:52:38,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:52:38,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 446 [2023-11-17 15:52:38,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 775 transitions, 25366 flow. Second operand has 11 states, 11 states have (on average 154.0) internal successors, (1694), 11 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:38,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:52:38,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 446 [2023-11-17 15:52:38,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:52:41,210 INFO L124 PetriNetUnfolderBase]: 4921/8533 cut-off events. [2023-11-17 15:52:41,210 INFO L125 PetriNetUnfolderBase]: For 261556/261556 co-relation queries the response was YES. [2023-11-17 15:52:41,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83604 conditions, 8533 events. 4921/8533 cut-off events. For 261556/261556 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 54654 event pairs, 348 based on Foata normal form. 4/8537 useless extension candidates. Maximal degree in co-relation 83465. Up to 2948 conditions per place. [2023-11-17 15:52:41,314 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 386 selfloop transitions, 461 changer transitions 2/849 dead transitions. [2023-11-17 15:52:41,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 849 transitions, 28226 flow [2023-11-17 15:52:41,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:52:41,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:52:41,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2232 transitions. [2023-11-17 15:52:41,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35746316463805256 [2023-11-17 15:52:41,317 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2232 transitions. [2023-11-17 15:52:41,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2232 transitions. [2023-11-17 15:52:41,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:52:41,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2232 transitions. [2023-11-17 15:52:41,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 159.42857142857142) internal successors, (2232), 14 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:41,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:41,321 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:41,321 INFO L175 Difference]: Start difference. First operand has 510 places, 775 transitions, 25366 flow. Second operand 14 states and 2232 transitions. [2023-11-17 15:52:41,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 849 transitions, 28226 flow [2023-11-17 15:52:43,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 849 transitions, 27396 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-17 15:52:43,728 INFO L231 Difference]: Finished difference. Result has 515 places, 792 transitions, 25936 flow [2023-11-17 15:52:43,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=24572, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=444, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=25936, PETRI_PLACES=515, PETRI_TRANSITIONS=792} [2023-11-17 15:52:43,728 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 489 predicate places. [2023-11-17 15:52:43,728 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 792 transitions, 25936 flow [2023-11-17 15:52:43,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 154.0) internal successors, (1694), 11 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:43,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:52:43,729 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:52:43,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-11-17 15:52:43,729 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 15:52:43,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:52:43,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2054957027, now seen corresponding path program 8 times [2023-11-17 15:52:43,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:52:43,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027772929] [2023-11-17 15:52:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:52:43,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:52:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:52:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:52:44,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:52:44,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027772929] [2023-11-17 15:52:44,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027772929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:52:44,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:52:44,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:52:44,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518255003] [2023-11-17 15:52:44,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:52:44,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:52:44,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:52:44,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:52:44,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:52:44,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 446 [2023-11-17 15:52:44,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 792 transitions, 25936 flow. Second operand has 12 states, 12 states have (on average 141.83333333333334) internal successors, (1702), 12 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:44,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:52:44,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 446 [2023-11-17 15:52:44,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:52:47,117 INFO L124 PetriNetUnfolderBase]: 4910/8518 cut-off events. [2023-11-17 15:52:47,117 INFO L125 PetriNetUnfolderBase]: For 269359/269359 co-relation queries the response was YES. [2023-11-17 15:52:47,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83875 conditions, 8518 events. 4910/8518 cut-off events. For 269359/269359 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 54452 event pairs, 1123 based on Foata normal form. 4/8522 useless extension candidates. Maximal degree in co-relation 83734. Up to 4744 conditions per place. [2023-11-17 15:52:47,216 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 357 selfloop transitions, 489 changer transitions 0/846 dead transitions. [2023-11-17 15:52:47,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 846 transitions, 27899 flow [2023-11-17 15:52:47,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:52:47,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:52:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2221 transitions. [2023-11-17 15:52:47,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3319880418535127 [2023-11-17 15:52:47,218 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2221 transitions. [2023-11-17 15:52:47,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2221 transitions. [2023-11-17 15:52:47,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:52:47,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2221 transitions. [2023-11-17 15:52:47,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 148.06666666666666) internal successors, (2221), 15 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:47,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:47,222 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:47,222 INFO L175 Difference]: Start difference. First operand has 515 places, 792 transitions, 25936 flow. Second operand 15 states and 2221 transitions. [2023-11-17 15:52:47,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 846 transitions, 27899 flow [2023-11-17 15:52:49,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 846 transitions, 27214 flow, removed 12 selfloop flow, removed 12 redundant places. [2023-11-17 15:52:49,681 INFO L231 Difference]: Finished difference. Result has 517 places, 789 transitions, 26171 flow [2023-11-17 15:52:49,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=25193, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=489, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=26171, PETRI_PLACES=517, PETRI_TRANSITIONS=789} [2023-11-17 15:52:49,681 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 491 predicate places. [2023-11-17 15:52:49,682 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 789 transitions, 26171 flow [2023-11-17 15:52:49,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 141.83333333333334) internal successors, (1702), 12 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:49,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:52:49,682 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:52:49,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-11-17 15:52:49,682 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 15:52:49,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:52:49,682 INFO L85 PathProgramCache]: Analyzing trace with hash -24716759, now seen corresponding path program 9 times [2023-11-17 15:52:49,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:52:49,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133293139] [2023-11-17 15:52:49,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:52:49,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:52:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:52:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-17 15:52:50,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:52:50,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133293139] [2023-11-17 15:52:50,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133293139] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:52:50,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531747361] [2023-11-17 15:52:50,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:52:50,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:52:50,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:52:50,310 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 15:52:50,312 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 15:52:50,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:52:50,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:52:50,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-17 15:52:50,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:52:50,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:52:50,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 15:52:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:52:50,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:52:50,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531747361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:52:50,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:52:50,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 26 [2023-11-17 15:52:50,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087793356] [2023-11-17 15:52:50,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:52:50,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:52:50,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:52:50,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:52:50,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2023-11-17 15:52:50,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 446 [2023-11-17 15:52:50,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 789 transitions, 26171 flow. Second operand has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:50,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:52:50,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 446 [2023-11-17 15:52:50,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:52:53,807 INFO L124 PetriNetUnfolderBase]: 4900/8498 cut-off events. [2023-11-17 15:52:53,808 INFO L125 PetriNetUnfolderBase]: For 272133/272133 co-relation queries the response was YES. [2023-11-17 15:52:53,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84191 conditions, 8498 events. 4900/8498 cut-off events. For 272133/272133 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 54193 event pairs, 1038 based on Foata normal form. 4/8502 useless extension candidates. Maximal degree in co-relation 84054. Up to 4351 conditions per place. [2023-11-17 15:52:53,911 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 379 selfloop transitions, 453 changer transitions 4/836 dead transitions. [2023-11-17 15:52:53,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 836 transitions, 28111 flow [2023-11-17 15:52:53,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:52:53,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:52:53,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1897 transitions. [2023-11-17 15:52:53,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3544469357249626 [2023-11-17 15:52:53,913 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1897 transitions. [2023-11-17 15:52:53,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1897 transitions. [2023-11-17 15:52:53,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:52:53,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1897 transitions. [2023-11-17 15:52:53,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 158.08333333333334) internal successors, (1897), 12 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:53,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 446.0) internal successors, (5798), 13 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:53,916 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 446.0) internal successors, (5798), 13 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:53,916 INFO L175 Difference]: Start difference. First operand has 517 places, 789 transitions, 26171 flow. Second operand 12 states and 1897 transitions. [2023-11-17 15:52:53,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 836 transitions, 28111 flow [2023-11-17 15:52:56,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 836 transitions, 27400 flow, removed 4 selfloop flow, removed 13 redundant places. [2023-11-17 15:52:56,270 INFO L231 Difference]: Finished difference. Result has 516 places, 788 transitions, 26694 flow [2023-11-17 15:52:56,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=25419, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=787, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=26694, PETRI_PLACES=516, PETRI_TRANSITIONS=788} [2023-11-17 15:52:56,270 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 490 predicate places. [2023-11-17 15:52:56,270 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 788 transitions, 26694 flow [2023-11-17 15:52:56,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:56,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:52:56,271 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:52:56,278 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 15:52:56,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:52:56,476 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 15:52:56,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:52:56,477 INFO L85 PathProgramCache]: Analyzing trace with hash 971214553, now seen corresponding path program 10 times [2023-11-17 15:52:56,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:52:56,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385534744] [2023-11-17 15:52:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:52:56,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:52:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:52:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-17 15:52:57,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:52:57,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385534744] [2023-11-17 15:52:57,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385534744] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:52:57,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103113265] [2023-11-17 15:52:57,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:52:57,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:52:57,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:52:57,094 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 15:52:57,098 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 15:52:57,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:52:57,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:52:57,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 15:52:57,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:52:57,388 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:52:57,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2023-11-17 15:52:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:52:57,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:52:57,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103113265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:52:57,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:52:57,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 23 [2023-11-17 15:52:57,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811727214] [2023-11-17 15:52:57,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:52:57,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:52:57,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:52:57,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:52:57,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2023-11-17 15:52:57,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 446 [2023-11-17 15:52:57,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 788 transitions, 26694 flow. Second operand has 7 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:57,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:52:57,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 446 [2023-11-17 15:52:57,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:00,073 INFO L124 PetriNetUnfolderBase]: 4911/8513 cut-off events. [2023-11-17 15:53:00,073 INFO L125 PetriNetUnfolderBase]: For 298256/298256 co-relation queries the response was YES. [2023-11-17 15:53:00,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86122 conditions, 8513 events. 4911/8513 cut-off events. For 298256/298256 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 54208 event pairs, 1054 based on Foata normal form. 4/8517 useless extension candidates. Maximal degree in co-relation 85987. Up to 3300 conditions per place. [2023-11-17 15:53:00,175 INFO L140 encePairwiseOnDemand]: 438/446 looper letters, 379 selfloop transitions, 461 changer transitions 1/841 dead transitions. [2023-11-17 15:53:00,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 841 transitions, 29216 flow [2023-11-17 15:53:00,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:53:00,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:53:00,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1563 transitions. [2023-11-17 15:53:00,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38938714499252614 [2023-11-17 15:53:00,177 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1563 transitions. [2023-11-17 15:53:00,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1563 transitions. [2023-11-17 15:53:00,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:00,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1563 transitions. [2023-11-17 15:53:00,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 173.66666666666666) internal successors, (1563), 9 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:00,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 446.0) internal successors, (4460), 10 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:00,180 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 446.0) internal successors, (4460), 10 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:00,180 INFO L175 Difference]: Start difference. First operand has 516 places, 788 transitions, 26694 flow. Second operand 9 states and 1563 transitions. [2023-11-17 15:53:00,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 841 transitions, 29216 flow [2023-11-17 15:53:02,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 841 transitions, 28669 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-17 15:53:02,528 INFO L231 Difference]: Finished difference. Result has 517 places, 793 transitions, 27369 flow [2023-11-17 15:53:02,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=26155, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=456, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27369, PETRI_PLACES=517, PETRI_TRANSITIONS=793} [2023-11-17 15:53:02,529 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 491 predicate places. [2023-11-17 15:53:02,529 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 793 transitions, 27369 flow [2023-11-17 15:53:02,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:02,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:02,529 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:53:02,533 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 15:53:02,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:53:02,734 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 15:53:02,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:02,734 INFO L85 PathProgramCache]: Analyzing trace with hash 441853553, now seen corresponding path program 11 times [2023-11-17 15:53:02,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:02,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142673126] [2023-11-17 15:53:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:02,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:02,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:02,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142673126] [2023-11-17 15:53:02,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142673126] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:53:02,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869925158] [2023-11-17 15:53:02,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:53:02,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:53:02,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:53:02,989 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 15:53:02,992 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 15:53:03,264 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 15:53:03,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:53:03,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-17 15:53:03,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:53:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:03,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:53:03,426 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-11-17 15:53:03,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-11-17 15:53:03,482 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:03,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869925158] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:53:03,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:53:03,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12, 9] total 19 [2023-11-17 15:53:03,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901670194] [2023-11-17 15:53:03,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:03,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:53:03,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:03,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:53:03,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-11-17 15:53:03,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 446 [2023-11-17 15:53:03,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 793 transitions, 27369 flow. Second operand has 7 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:03,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:03,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 446 [2023-11-17 15:53:03,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:06,269 INFO L124 PetriNetUnfolderBase]: 4903/8503 cut-off events. [2023-11-17 15:53:06,269 INFO L125 PetriNetUnfolderBase]: For 313563/313563 co-relation queries the response was YES. [2023-11-17 15:53:06,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87166 conditions, 8503 events. 4903/8503 cut-off events. For 313563/313563 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 54167 event pairs, 1082 based on Foata normal form. 4/8507 useless extension candidates. Maximal degree in co-relation 87028. Up to 3310 conditions per place. [2023-11-17 15:53:06,367 INFO L140 encePairwiseOnDemand]: 438/446 looper letters, 360 selfloop transitions, 460 changer transitions 0/820 dead transitions. [2023-11-17 15:53:06,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 820 transitions, 29197 flow [2023-11-17 15:53:06,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:53:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:53:06,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1386 transitions. [2023-11-17 15:53:06,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38845291479820626 [2023-11-17 15:53:06,368 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1386 transitions. [2023-11-17 15:53:06,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1386 transitions. [2023-11-17 15:53:06,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:06,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1386 transitions. [2023-11-17 15:53:06,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 173.25) internal successors, (1386), 8 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:06,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 446.0) internal successors, (4014), 9 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:06,371 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 446.0) internal successors, (4014), 9 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:06,371 INFO L175 Difference]: Start difference. First operand has 517 places, 793 transitions, 27369 flow. Second operand 8 states and 1386 transitions. [2023-11-17 15:53:06,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 820 transitions, 29197 flow [2023-11-17 15:53:08,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 820 transitions, 28519 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-17 15:53:08,648 INFO L231 Difference]: Finished difference. Result has 521 places, 792 transitions, 28124 flow [2023-11-17 15:53:08,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=26646, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=459, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=28124, PETRI_PLACES=521, PETRI_TRANSITIONS=792} [2023-11-17 15:53:08,649 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 495 predicate places. [2023-11-17 15:53:08,649 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 792 transitions, 28124 flow [2023-11-17 15:53:08,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:08,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:08,649 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:53:08,655 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 15:53:08,855 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,SelfDestructingSolverStorable74 [2023-11-17 15:53:08,856 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 15:53:08,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:08,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1710712603, now seen corresponding path program 12 times [2023-11-17 15:53:08,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:08,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018624398] [2023-11-17 15:53:08,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:08,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-17 15:53:09,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:09,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018624398] [2023-11-17 15:53:09,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018624398] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:53:09,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043946536] [2023-11-17 15:53:09,417 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:53:09,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:53:09,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:53:09,418 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 15:53:09,420 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 15:53:09,606 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 15:53:09,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:53:09,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-17 15:53:09,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:53:09,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-17 15:53:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:09,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:53:09,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043946536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:09,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:53:09,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 21 [2023-11-17 15:53:09,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158612405] [2023-11-17 15:53:09,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:09,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:53:09,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:09,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:53:09,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2023-11-17 15:53:09,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 446 [2023-11-17 15:53:09,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 792 transitions, 28124 flow. Second operand has 10 states, 10 states have (on average 157.2) internal successors, (1572), 10 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:09,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:09,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 446 [2023-11-17 15:53:09,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:12,489 INFO L124 PetriNetUnfolderBase]: 4893/8483 cut-off events. [2023-11-17 15:53:12,490 INFO L125 PetriNetUnfolderBase]: For 327270/327270 co-relation queries the response was YES. [2023-11-17 15:53:12,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88570 conditions, 8483 events. 4893/8483 cut-off events. For 327270/327270 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 54006 event pairs, 1076 based on Foata normal form. 4/8487 useless extension candidates. Maximal degree in co-relation 88431. Up to 3312 conditions per place. [2023-11-17 15:53:12,588 INFO L140 encePairwiseOnDemand]: 436/446 looper letters, 357 selfloop transitions, 464 changer transitions 1/822 dead transitions. [2023-11-17 15:53:12,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 822 transitions, 29978 flow [2023-11-17 15:53:12,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:53:12,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:53:12,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1633 transitions. [2023-11-17 15:53:12,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36614349775784755 [2023-11-17 15:53:12,590 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1633 transitions. [2023-11-17 15:53:12,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1633 transitions. [2023-11-17 15:53:12,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:12,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1633 transitions. [2023-11-17 15:53:12,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 163.3) internal successors, (1633), 10 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:12,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:12,593 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:12,593 INFO L175 Difference]: Start difference. First operand has 521 places, 792 transitions, 28124 flow. Second operand 10 states and 1633 transitions. [2023-11-17 15:53:12,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 822 transitions, 29978 flow [2023-11-17 15:53:15,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 822 transitions, 29021 flow, removed 0 selfloop flow, removed 16 redundant places. [2023-11-17 15:53:15,127 INFO L231 Difference]: Finished difference. Result has 514 places, 790 transitions, 28009 flow [2023-11-17 15:53:15,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=27127, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=464, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=28009, PETRI_PLACES=514, PETRI_TRANSITIONS=790} [2023-11-17 15:53:15,128 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 488 predicate places. [2023-11-17 15:53:15,128 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 790 transitions, 28009 flow [2023-11-17 15:53:15,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 157.2) internal successors, (1572), 10 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:15,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:15,128 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:53:15,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-17 15:53:15,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:53:15,333 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 15:53:15,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:15,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2008056113, now seen corresponding path program 13 times [2023-11-17 15:53:15,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:15,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960975287] [2023-11-17 15:53:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:15,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:15,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:15,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960975287] [2023-11-17 15:53:15,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960975287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:15,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:53:15,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 15:53:15,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724245555] [2023-11-17 15:53:15,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:15,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:53:15,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:15,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:53:15,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:53:15,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 446 [2023-11-17 15:53:15,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 790 transitions, 28009 flow. Second operand has 11 states, 11 states have (on average 146.0) internal successors, (1606), 11 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:15,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:15,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 446 [2023-11-17 15:53:15,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:18,544 INFO L124 PetriNetUnfolderBase]: 4949/8571 cut-off events. [2023-11-17 15:53:18,544 INFO L125 PetriNetUnfolderBase]: For 330046/330046 co-relation queries the response was YES. [2023-11-17 15:53:18,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89457 conditions, 8571 events. 4949/8571 cut-off events. For 330046/330046 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 54839 event pairs, 2244 based on Foata normal form. 4/8575 useless extension candidates. Maximal degree in co-relation 89326. Up to 7463 conditions per place. [2023-11-17 15:53:18,641 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 606 selfloop transitions, 226 changer transitions 1/833 dead transitions. [2023-11-17 15:53:18,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 833 transitions, 30556 flow [2023-11-17 15:53:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:53:18,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:53:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1802 transitions. [2023-11-17 15:53:18,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3366965620328849 [2023-11-17 15:53:18,643 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1802 transitions. [2023-11-17 15:53:18,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1802 transitions. [2023-11-17 15:53:18,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:18,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1802 transitions. [2023-11-17 15:53:18,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 150.16666666666666) internal successors, (1802), 12 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:18,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 446.0) internal successors, (5798), 13 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:18,647 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 446.0) internal successors, (5798), 13 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:18,647 INFO L175 Difference]: Start difference. First operand has 514 places, 790 transitions, 28009 flow. Second operand 12 states and 1802 transitions. [2023-11-17 15:53:18,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 833 transitions, 30556 flow [2023-11-17 15:53:21,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 833 transitions, 29468 flow, removed 3 selfloop flow, removed 21 redundant places. [2023-11-17 15:53:21,019 INFO L231 Difference]: Finished difference. Result has 504 places, 799 transitions, 27801 flow [2023-11-17 15:53:21,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=26913, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=27801, PETRI_PLACES=504, PETRI_TRANSITIONS=799} [2023-11-17 15:53:21,020 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 478 predicate places. [2023-11-17 15:53:21,020 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 799 transitions, 27801 flow [2023-11-17 15:53:21,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 146.0) internal successors, (1606), 11 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:21,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:21,020 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:53:21,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-11-17 15:53:21,020 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 15:53:21,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:21,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1833557449, now seen corresponding path program 14 times [2023-11-17 15:53:21,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:21,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999022808] [2023-11-17 15:53:21,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:21,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-17 15:53:21,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:21,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999022808] [2023-11-17 15:53:21,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999022808] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:53:21,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610833497] [2023-11-17 15:53:21,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:53:21,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:53:21,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:53:21,735 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 15:53:21,761 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 15:53:21,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:53:21,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:53:22,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-17 15:53:22,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:53:22,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:53:22,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:53:22,256 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 15:53:22,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2023-11-17 15:53:22,360 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:22,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:53:22,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610833497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:22,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:53:22,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 25 [2023-11-17 15:53:22,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444420448] [2023-11-17 15:53:22,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:22,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:53:22,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:53:22,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2023-11-17 15:53:22,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 446 [2023-11-17 15:53:22,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 799 transitions, 27801 flow. Second operand has 11 states, 11 states have (on average 148.0) internal successors, (1628), 11 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:22,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:22,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 446 [2023-11-17 15:53:22,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:24,970 INFO L124 PetriNetUnfolderBase]: 4937/8544 cut-off events. [2023-11-17 15:53:24,970 INFO L125 PetriNetUnfolderBase]: For 306752/306752 co-relation queries the response was YES. [2023-11-17 15:53:25,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87815 conditions, 8544 events. 4937/8544 cut-off events. For 306752/306752 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 54486 event pairs, 1111 based on Foata normal form. 4/8548 useless extension candidates. Maximal degree in co-relation 87693. Up to 4800 conditions per place. [2023-11-17 15:53:25,081 INFO L140 encePairwiseOnDemand]: 436/446 looper letters, 323 selfloop transitions, 501 changer transitions 4/828 dead transitions. [2023-11-17 15:53:25,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 828 transitions, 29599 flow [2023-11-17 15:53:25,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:53:25,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:53:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1686 transitions. [2023-11-17 15:53:25,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34366082348145127 [2023-11-17 15:53:25,082 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1686 transitions. [2023-11-17 15:53:25,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1686 transitions. [2023-11-17 15:53:25,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:25,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1686 transitions. [2023-11-17 15:53:25,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 153.27272727272728) internal successors, (1686), 11 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:25,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 446.0) internal successors, (5352), 12 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:25,086 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 446.0) internal successors, (5352), 12 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:25,086 INFO L175 Difference]: Start difference. First operand has 504 places, 799 transitions, 27801 flow. Second operand 11 states and 1686 transitions. [2023-11-17 15:53:25,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 828 transitions, 29599 flow [2023-11-17 15:53:27,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 828 transitions, 28715 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-11-17 15:53:27,642 INFO L231 Difference]: Finished difference. Result has 501 places, 796 transitions, 27849 flow [2023-11-17 15:53:27,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=26880, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=501, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=27849, PETRI_PLACES=501, PETRI_TRANSITIONS=796} [2023-11-17 15:53:27,648 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 475 predicate places. [2023-11-17 15:53:27,648 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 796 transitions, 27849 flow [2023-11-17 15:53:27,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 148.0) internal successors, (1628), 11 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:27,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:27,648 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:53:27,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-17 15:53:27,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:53:27,853 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 15:53:27,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:27,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1738451260, now seen corresponding path program 1 times [2023-11-17 15:53:27,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:27,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594361203] [2023-11-17 15:53:27,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:27,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:28,365 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:28,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:28,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594361203] [2023-11-17 15:53:28,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594361203] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:53:28,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241744290] [2023-11-17 15:53:28,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:28,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:53:28,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:53:28,367 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 15:53:28,371 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 15:53:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:28,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 15:53:28,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:53:29,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:53:29,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:53:29,005 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 15:53:29,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2023-11-17 15:53:29,065 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:29,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:53:29,354 INFO L349 Elim1Store]: treesize reduction 11, result has 84.1 percent of original size [2023-11-17 15:53:29,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 117 [2023-11-17 15:53:29,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:53:29,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 56 [2023-11-17 15:53:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:29,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241744290] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:53:29,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:53:29,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 36 [2023-11-17 15:53:29,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132840552] [2023-11-17 15:53:29,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:53:29,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-17 15:53:29,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:29,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-17 15:53:29,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1173, Unknown=4, NotChecked=0, Total=1332 [2023-11-17 15:53:29,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 446 [2023-11-17 15:53:29,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 796 transitions, 27849 flow. Second operand has 37 states, 37 states have (on average 137.8108108108108) internal successors, (5099), 37 states have internal predecessors, (5099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:29,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:29,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 446 [2023-11-17 15:53:29,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:33,261 INFO L124 PetriNetUnfolderBase]: 4553/7952 cut-off events. [2023-11-17 15:53:33,261 INFO L125 PetriNetUnfolderBase]: For 307152/307152 co-relation queries the response was YES. [2023-11-17 15:53:33,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81872 conditions, 7952 events. 4553/7952 cut-off events. For 307152/307152 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 49566 event pairs, 408 based on Foata normal form. 368/8320 useless extension candidates. Maximal degree in co-relation 81751. Up to 3082 conditions per place. [2023-11-17 15:53:33,344 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 322 selfloop transitions, 531 changer transitions 1/854 dead transitions. [2023-11-17 15:53:33,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 854 transitions, 29651 flow [2023-11-17 15:53:33,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 15:53:33,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 15:53:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3270 transitions. [2023-11-17 15:53:33,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31877558978358356 [2023-11-17 15:53:33,347 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3270 transitions. [2023-11-17 15:53:33,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3270 transitions. [2023-11-17 15:53:33,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:33,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3270 transitions. [2023-11-17 15:53:33,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 142.17391304347825) internal successors, (3270), 23 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:33,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 446.0) internal successors, (10704), 24 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:33,353 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 446.0) internal successors, (10704), 24 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:33,353 INFO L175 Difference]: Start difference. First operand has 501 places, 796 transitions, 27849 flow. Second operand 23 states and 3270 transitions. [2023-11-17 15:53:33,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 854 transitions, 29651 flow [2023-11-17 15:53:35,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 854 transitions, 28505 flow, removed 6 selfloop flow, removed 13 redundant places. [2023-11-17 15:53:35,362 INFO L231 Difference]: Finished difference. Result has 510 places, 779 transitions, 27459 flow [2023-11-17 15:53:35,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=25569, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=27459, PETRI_PLACES=510, PETRI_TRANSITIONS=779} [2023-11-17 15:53:35,363 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 484 predicate places. [2023-11-17 15:53:35,363 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 779 transitions, 27459 flow [2023-11-17 15:53:35,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 137.8108108108108) internal successors, (5099), 37 states have internal predecessors, (5099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:35,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:35,364 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:53:35,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-17 15:53:35,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:53:35,569 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 15:53:35,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:35,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1367203554, now seen corresponding path program 2 times [2023-11-17 15:53:35,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:35,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573367123] [2023-11-17 15:53:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:35,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:35,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:35,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573367123] [2023-11-17 15:53:35,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573367123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:53:35,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594098737] [2023-11-17 15:53:35,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:53:35,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:53:35,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:53:35,929 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 15:53:35,933 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 15:53:36,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:53:36,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:53:36,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 15:53:36,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:53:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:36,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:53:36,621 INFO L349 Elim1Store]: treesize reduction 11, result has 90.4 percent of original size [2023-11-17 15:53:36,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 90 treesize of output 128 [2023-11-17 15:53:36,955 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:36,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594098737] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:53:36,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:53:36,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 27 [2023-11-17 15:53:36,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340837108] [2023-11-17 15:53:36,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:53:36,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 15:53:36,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:36,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 15:53:36,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2023-11-17 15:53:36,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 446 [2023-11-17 15:53:36,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 779 transitions, 27459 flow. Second operand has 27 states, 27 states have (on average 147.07407407407408) internal successors, (3971), 27 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:36,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:36,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 446 [2023-11-17 15:53:36,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:42,745 INFO L124 PetriNetUnfolderBase]: 6034/11083 cut-off events. [2023-11-17 15:53:42,745 INFO L125 PetriNetUnfolderBase]: For 381896/381896 co-relation queries the response was YES. [2023-11-17 15:53:42,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106041 conditions, 11083 events. 6034/11083 cut-off events. For 381896/381896 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 78934 event pairs, 715 based on Foata normal form. 69/11152 useless extension candidates. Maximal degree in co-relation 105915. Up to 1919 conditions per place. [2023-11-17 15:53:42,872 INFO L140 encePairwiseOnDemand]: 430/446 looper letters, 486 selfloop transitions, 741 changer transitions 13/1240 dead transitions. [2023-11-17 15:53:42,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 1240 transitions, 37687 flow [2023-11-17 15:53:42,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-17 15:53:42,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-11-17 15:53:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 9126 transitions. [2023-11-17 15:53:42,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34103139013452916 [2023-11-17 15:53:42,877 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 9126 transitions. [2023-11-17 15:53:42,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 9126 transitions. [2023-11-17 15:53:42,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:42,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 9126 transitions. [2023-11-17 15:53:42,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 152.1) internal successors, (9126), 60 states have internal predecessors, (9126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:42,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 446.0) internal successors, (27206), 61 states have internal predecessors, (27206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:42,895 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 446.0) internal successors, (27206), 61 states have internal predecessors, (27206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:42,895 INFO L175 Difference]: Start difference. First operand has 510 places, 779 transitions, 27459 flow. Second operand 60 states and 9126 transitions. [2023-11-17 15:53:42,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 1240 transitions, 37687 flow [2023-11-17 15:53:46,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 1240 transitions, 36077 flow, removed 106 selfloop flow, removed 18 redundant places. [2023-11-17 15:53:46,720 INFO L231 Difference]: Finished difference. Result has 578 places, 966 transitions, 33886 flow [2023-11-17 15:53:46,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=25986, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=571, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=33886, PETRI_PLACES=578, PETRI_TRANSITIONS=966} [2023-11-17 15:53:46,720 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 552 predicate places. [2023-11-17 15:53:46,720 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 966 transitions, 33886 flow [2023-11-17 15:53:46,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 147.07407407407408) internal successors, (3971), 27 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:46,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:46,721 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:53:46,730 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 15:53:46,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-11-17 15:53:46,926 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 15:53:46,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:46,927 INFO L85 PathProgramCache]: Analyzing trace with hash -268824976, now seen corresponding path program 3 times [2023-11-17 15:53:46,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:46,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479573785] [2023-11-17 15:53:46,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:46,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:47,298 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:47,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:47,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479573785] [2023-11-17 15:53:47,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479573785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:53:47,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454336837] [2023-11-17 15:53:47,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:53:47,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:53:47,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:53:47,300 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 15:53:47,302 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 15:53:47,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:53:47,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:53:47,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 15:53:47,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:53:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:47,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:53:47,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454336837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:47,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:53:47,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 19 [2023-11-17 15:53:47,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771519617] [2023-11-17 15:53:47,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:47,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:53:47,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:47,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:53:47,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2023-11-17 15:53:47,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 446 [2023-11-17 15:53:47,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 966 transitions, 33886 flow. Second operand has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:47,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:47,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 446 [2023-11-17 15:53:47,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:52,090 INFO L124 PetriNetUnfolderBase]: 5996/10944 cut-off events. [2023-11-17 15:53:52,090 INFO L125 PetriNetUnfolderBase]: For 442347/442347 co-relation queries the response was YES. [2023-11-17 15:53:52,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109036 conditions, 10944 events. 5996/10944 cut-off events. For 442347/442347 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 77016 event pairs, 2740 based on Foata normal form. 2/10946 useless extension candidates. Maximal degree in co-relation 108886. Up to 9426 conditions per place. [2023-11-17 15:53:52,228 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 738 selfloop transitions, 252 changer transitions 2/992 dead transitions. [2023-11-17 15:53:52,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 992 transitions, 36005 flow [2023-11-17 15:53:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:53:52,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:53:52,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2025 transitions. [2023-11-17 15:53:52,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3492583649534322 [2023-11-17 15:53:52,231 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2025 transitions. [2023-11-17 15:53:52,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2025 transitions. [2023-11-17 15:53:52,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:52,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2025 transitions. [2023-11-17 15:53:52,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 155.76923076923077) internal successors, (2025), 13 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:52,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 446.0) internal successors, (6244), 14 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:52,235 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 446.0) internal successors, (6244), 14 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:52,235 INFO L175 Difference]: Start difference. First operand has 578 places, 966 transitions, 33886 flow. Second operand 13 states and 2025 transitions. [2023-11-17 15:53:52,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 992 transitions, 36005 flow [2023-11-17 15:53:57,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 992 transitions, 34214 flow, removed 264 selfloop flow, removed 29 redundant places. [2023-11-17 15:53:57,180 INFO L231 Difference]: Finished difference. Result has 556 places, 959 transitions, 32386 flow [2023-11-17 15:53:57,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=31913, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=32386, PETRI_PLACES=556, PETRI_TRANSITIONS=959} [2023-11-17 15:53:57,184 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 530 predicate places. [2023-11-17 15:53:57,184 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 959 transitions, 32386 flow [2023-11-17 15:53:57,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:57,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:57,185 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:53:57,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-17 15:53:57,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:53:57,390 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 15:53:57,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:57,390 INFO L85 PathProgramCache]: Analyzing trace with hash -126268190, now seen corresponding path program 4 times [2023-11-17 15:53:57,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:57,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420099451] [2023-11-17 15:53:57,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:57,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:57,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:57,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420099451] [2023-11-17 15:53:57,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420099451] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:53:57,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385013672] [2023-11-17 15:53:57,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:53:57,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:53:57,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:53:57,743 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 15:53:57,745 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 15:53:57,985 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:53:57,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:53:57,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 15:53:57,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:53:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:58,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:53:58,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:53:58,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 90 treesize of output 146 [2023-11-17 15:53:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:53:59,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385013672] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:53:59,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:53:59,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-11-17 15:53:59,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332929746] [2023-11-17 15:53:59,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:53:59,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 15:53:59,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:59,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 15:53:59,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2023-11-17 15:53:59,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 446 [2023-11-17 15:53:59,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 959 transitions, 32386 flow. Second operand has 27 states, 27 states have (on average 147.07407407407408) internal successors, (3971), 27 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:59,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:59,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 446 [2023-11-17 15:53:59,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:06,050 INFO L124 PetriNetUnfolderBase]: 6870/12829 cut-off events. [2023-11-17 15:54:06,051 INFO L125 PetriNetUnfolderBase]: For 465487/465487 co-relation queries the response was YES. [2023-11-17 15:54:06,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118791 conditions, 12829 events. 6870/12829 cut-off events. For 465487/465487 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 96239 event pairs, 1231 based on Foata normal form. 69/12898 useless extension candidates. Maximal degree in co-relation 118648. Up to 4311 conditions per place. [2023-11-17 15:54:06,205 INFO L140 encePairwiseOnDemand]: 430/446 looper letters, 533 selfloop transitions, 719 changer transitions 10/1262 dead transitions. [2023-11-17 15:54:06,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 1262 transitions, 39795 flow [2023-11-17 15:54:06,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-17 15:54:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-11-17 15:54:06,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 7869 transitions. [2023-11-17 15:54:06,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33929803380476026 [2023-11-17 15:54:06,210 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 7869 transitions. [2023-11-17 15:54:06,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 7869 transitions. [2023-11-17 15:54:06,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:06,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 7869 transitions. [2023-11-17 15:54:06,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 151.32692307692307) internal successors, (7869), 52 states have internal predecessors, (7869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:06,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 446.0) internal successors, (23638), 53 states have internal predecessors, (23638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:06,225 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 446.0) internal successors, (23638), 53 states have internal predecessors, (23638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:06,225 INFO L175 Difference]: Start difference. First operand has 556 places, 959 transitions, 32386 flow. Second operand 52 states and 7869 transitions. [2023-11-17 15:54:06,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 1262 transitions, 39795 flow [2023-11-17 15:54:11,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 1262 transitions, 39107 flow, removed 36 selfloop flow, removed 13 redundant places. [2023-11-17 15:54:11,875 INFO L231 Difference]: Finished difference. Result has 601 places, 1061 transitions, 36567 flow [2023-11-17 15:54:11,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=31489, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=951, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=619, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=36567, PETRI_PLACES=601, PETRI_TRANSITIONS=1061} [2023-11-17 15:54:11,876 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 575 predicate places. [2023-11-17 15:54:11,876 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 1061 transitions, 36567 flow [2023-11-17 15:54:11,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 147.07407407407408) internal successors, (3971), 27 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:11,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:11,877 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:11,884 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 15:54:12,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:12,083 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 15:54:12,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:12,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1069463780, now seen corresponding path program 5 times [2023-11-17 15:54:12,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:12,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092250116] [2023-11-17 15:54:12,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:12,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:54:12,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:12,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092250116] [2023-11-17 15:54:12,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092250116] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:54:12,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103365413] [2023-11-17 15:54:12,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:54:12,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:12,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:54:12,417 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 15:54:12,419 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 15:54:12,749 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 15:54:12,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:54:12,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 15:54:12,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:54:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:54:12,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:54:12,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103365413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:12,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:54:12,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 19 [2023-11-17 15:54:12,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108439267] [2023-11-17 15:54:12,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:12,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:54:12,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:12,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:54:12,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-11-17 15:54:12,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 446 [2023-11-17 15:54:12,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 1061 transitions, 36567 flow. Second operand has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:12,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:12,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 446 [2023-11-17 15:54:12,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:18,244 INFO L124 PetriNetUnfolderBase]: 6850/12780 cut-off events. [2023-11-17 15:54:18,245 INFO L125 PetriNetUnfolderBase]: For 499943/499943 co-relation queries the response was YES. [2023-11-17 15:54:18,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121181 conditions, 12780 events. 6850/12780 cut-off events. For 499943/499943 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 95544 event pairs, 3349 based on Foata normal form. 2/12782 useless extension candidates. Maximal degree in co-relation 121029. Up to 11791 conditions per place. [2023-11-17 15:54:18,423 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 889 selfloop transitions, 192 changer transitions 2/1083 dead transitions. [2023-11-17 15:54:18,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 1083 transitions, 38820 flow [2023-11-17 15:54:18,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:54:18,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:54:18,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2018 transitions. [2023-11-17 15:54:18,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34805105208692655 [2023-11-17 15:54:18,424 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2018 transitions. [2023-11-17 15:54:18,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2018 transitions. [2023-11-17 15:54:18,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:18,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2018 transitions. [2023-11-17 15:54:18,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 155.23076923076923) internal successors, (2018), 13 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 15:54:18,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 446.0) internal successors, (6244), 14 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:18,428 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 446.0) internal successors, (6244), 14 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:18,428 INFO L175 Difference]: Start difference. First operand has 601 places, 1061 transitions, 36567 flow. Second operand 13 states and 2018 transitions. [2023-11-17 15:54:18,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 1083 transitions, 38820 flow [2023-11-17 15:54:24,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 1083 transitions, 37522 flow, removed 90 selfloop flow, removed 30 redundant places. [2023-11-17 15:54:24,607 INFO L231 Difference]: Finished difference. Result has 579 places, 1057 transitions, 35464 flow [2023-11-17 15:54:24,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=35112, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1058, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=866, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=35464, PETRI_PLACES=579, PETRI_TRANSITIONS=1057} [2023-11-17 15:54:24,608 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 553 predicate places. [2023-11-17 15:54:24,608 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 1057 transitions, 35464 flow [2023-11-17 15:54:24,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:24,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:24,609 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:24,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-17 15:54:24,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:24,817 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 15:54:24,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:24,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1711112270, now seen corresponding path program 6 times [2023-11-17 15:54:24,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:24,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919197823] [2023-11-17 15:54:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:24,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:25,207 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:54:25,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:25,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919197823] [2023-11-17 15:54:25,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919197823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:54:25,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711449003] [2023-11-17 15:54:25,208 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:54:25,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:25,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:54:25,209 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 15:54:25,214 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 15:54:25,469 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 15:54:25,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:54:25,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 15:54:25,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:54:25,621 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-17 15:54:25,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2023-11-17 15:54:25,632 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:54:25,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:54:25,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711449003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:25,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:54:25,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 19 [2023-11-17 15:54:25,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774612047] [2023-11-17 15:54:25,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:25,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:54:25,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:25,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:54:25,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-11-17 15:54:25,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 446 [2023-11-17 15:54:25,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 1057 transitions, 35464 flow. Second operand has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:25,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:25,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 446 [2023-11-17 15:54:25,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:30,671 INFO L124 PetriNetUnfolderBase]: 6821/12669 cut-off events. [2023-11-17 15:54:30,671 INFO L125 PetriNetUnfolderBase]: For 448147/448147 co-relation queries the response was YES. [2023-11-17 15:54:30,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117287 conditions, 12669 events. 6821/12669 cut-off events. For 448147/448147 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 94117 event pairs, 3347 based on Foata normal form. 2/12671 useless extension candidates. Maximal degree in co-relation 117140. Up to 11707 conditions per place. [2023-11-17 15:54:30,822 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 883 selfloop transitions, 184 changer transitions 4/1071 dead transitions. [2023-11-17 15:54:30,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 1071 transitions, 37590 flow [2023-11-17 15:54:30,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:54:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:54:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1860 transitions. [2023-11-17 15:54:30,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3475336322869955 [2023-11-17 15:54:30,824 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1860 transitions. [2023-11-17 15:54:30,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1860 transitions. [2023-11-17 15:54:30,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:30,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1860 transitions. [2023-11-17 15:54:30,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 155.0) internal successors, (1860), 12 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:30,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 446.0) internal successors, (5798), 13 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:30,827 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 446.0) internal successors, (5798), 13 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:30,827 INFO L175 Difference]: Start difference. First operand has 579 places, 1057 transitions, 35464 flow. Second operand 12 states and 1860 transitions. [2023-11-17 15:54:30,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 1071 transitions, 37590 flow [2023-11-17 15:54:36,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 1071 transitions, 37194 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-11-17 15:54:36,604 INFO L231 Difference]: Finished difference. Result has 573 places, 1049 transitions, 35159 flow [2023-11-17 15:54:36,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=34842, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1051, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=867, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=35159, PETRI_PLACES=573, PETRI_TRANSITIONS=1049} [2023-11-17 15:54:36,605 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 547 predicate places. [2023-11-17 15:54:36,605 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 1049 transitions, 35159 flow [2023-11-17 15:54:36,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:36,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:36,605 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:36,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-17 15:54:36,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:36,811 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 15:54:36,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:36,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1503980560, now seen corresponding path program 7 times [2023-11-17 15:54:36,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:36,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198688217] [2023-11-17 15:54:36,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:36,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:54:37,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:37,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198688217] [2023-11-17 15:54:37,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198688217] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:54:37,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324301651] [2023-11-17 15:54:37,245 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:54:37,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:37,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:54:37,246 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 15:54:37,247 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 15:54:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:37,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 15:54:37,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:54:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:54:37,714 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:54:37,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324301651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:37,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:54:37,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 20 [2023-11-17 15:54:37,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856777117] [2023-11-17 15:54:37,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:37,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:54:37,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:37,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:54:37,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-11-17 15:54:37,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 446 [2023-11-17 15:54:37,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 1049 transitions, 35159 flow. Second operand has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:37,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:37,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 446 [2023-11-17 15:54:37,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:42,555 INFO L124 PetriNetUnfolderBase]: 6878/12772 cut-off events. [2023-11-17 15:54:42,556 INFO L125 PetriNetUnfolderBase]: For 455149/455149 co-relation queries the response was YES. [2023-11-17 15:54:42,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118460 conditions, 12772 events. 6878/12772 cut-off events. For 455149/455149 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 94865 event pairs, 3341 based on Foata normal form. 2/12774 useless extension candidates. Maximal degree in co-relation 118314. Up to 11731 conditions per place. [2023-11-17 15:54:42,714 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 902 selfloop transitions, 197 changer transitions 2/1101 dead transitions. [2023-11-17 15:54:42,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 1101 transitions, 38478 flow [2023-11-17 15:54:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:54:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:54:42,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2325 transitions. [2023-11-17 15:54:42,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3475336322869955 [2023-11-17 15:54:42,716 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2325 transitions. [2023-11-17 15:54:42,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2325 transitions. [2023-11-17 15:54:42,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:42,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2325 transitions. [2023-11-17 15:54:42,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 155.0) internal successors, (2325), 15 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:42,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:42,720 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 446.0) internal successors, (7136), 16 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:42,720 INFO L175 Difference]: Start difference. First operand has 573 places, 1049 transitions, 35159 flow. Second operand 15 states and 2325 transitions. [2023-11-17 15:54:42,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 1101 transitions, 38478 flow [2023-11-17 15:54:48,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 1101 transitions, 38019 flow, removed 5 selfloop flow, removed 12 redundant places. [2023-11-17 15:54:48,542 INFO L231 Difference]: Finished difference. Result has 576 places, 1070 transitions, 35953 flow [2023-11-17 15:54:48,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=34721, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1049, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=858, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=35953, PETRI_PLACES=576, PETRI_TRANSITIONS=1070} [2023-11-17 15:54:48,543 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 550 predicate places. [2023-11-17 15:54:48,543 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 1070 transitions, 35953 flow [2023-11-17 15:54:48,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:48,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:48,543 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:48,549 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 15:54:48,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:48,745 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 15:54:48,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:48,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1548709124, now seen corresponding path program 8 times [2023-11-17 15:54:48,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:48,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557184403] [2023-11-17 15:54:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:48,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:54:49,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:49,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557184403] [2023-11-17 15:54:49,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557184403] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:54:49,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320758522] [2023-11-17 15:54:49,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:54:49,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:49,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:54:49,097 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 15:54:49,098 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 15:54:49,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:54:49,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:54:49,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 15:54:49,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:54:49,563 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-17 15:54:49,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2023-11-17 15:54:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:54:49,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:54:49,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320758522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:49,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:54:49,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 19 [2023-11-17 15:54:49,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872038628] [2023-11-17 15:54:49,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:49,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:54:49,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:49,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:54:49,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2023-11-17 15:54:49,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 446 [2023-11-17 15:54:49,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 1070 transitions, 35953 flow. Second operand has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:49,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:49,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 446 [2023-11-17 15:54:49,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:55,055 INFO L124 PetriNetUnfolderBase]: 6869/12753 cut-off events. [2023-11-17 15:54:55,056 INFO L125 PetriNetUnfolderBase]: For 453766/453766 co-relation queries the response was YES. [2023-11-17 15:54:55,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118264 conditions, 12753 events. 6869/12753 cut-off events. For 453766/453766 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 94681 event pairs, 3355 based on Foata normal form. 2/12755 useless extension candidates. Maximal degree in co-relation 118114. Up to 11769 conditions per place. [2023-11-17 15:54:55,218 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 900 selfloop transitions, 184 changer transitions 5/1089 dead transitions. [2023-11-17 15:54:55,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 1089 transitions, 38222 flow [2023-11-17 15:54:55,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:54:55,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:54:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2161 transitions. [2023-11-17 15:54:55,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34609224855861626 [2023-11-17 15:54:55,220 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2161 transitions. [2023-11-17 15:54:55,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2161 transitions. [2023-11-17 15:54:55,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:55,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2161 transitions. [2023-11-17 15:54:55,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 154.35714285714286) internal successors, (2161), 14 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:55,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:55,224 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 446.0) internal successors, (6690), 15 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:55,224 INFO L175 Difference]: Start difference. First operand has 576 places, 1070 transitions, 35953 flow. Second operand 14 states and 2161 transitions. [2023-11-17 15:54:55,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 1089 transitions, 38222 flow [2023-11-17 15:55:01,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 1089 transitions, 37975 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-11-17 15:55:01,070 INFO L231 Difference]: Finished difference. Result has 583 places, 1066 transitions, 35912 flow [2023-11-17 15:55:01,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=35559, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=883, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=35912, PETRI_PLACES=583, PETRI_TRANSITIONS=1066} [2023-11-17 15:55:01,071 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 557 predicate places. [2023-11-17 15:55:01,071 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 1066 transitions, 35912 flow [2023-11-17 15:55:01,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:01,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:55:01,072 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:55:01,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-17 15:55:01,277 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,SelfDestructingSolverStorable85 [2023-11-17 15:55:01,277 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 15:55:01,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:55:01,277 INFO L85 PathProgramCache]: Analyzing trace with hash -991686110, now seen corresponding path program 9 times [2023-11-17 15:55:01,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:55:01,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410314384] [2023-11-17 15:55:01,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:55:01,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:55:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:55:01,635 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:55:01,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:55:01,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410314384] [2023-11-17 15:55:01,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410314384] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:55:01,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945710833] [2023-11-17 15:55:01,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:55:01,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:55:01,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:55:01,637 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 15:55:01,639 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 15:55:01,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:55:01,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:55:01,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 15:55:01,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:55:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:55:02,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:55:02,420 INFO L349 Elim1Store]: treesize reduction 11, result has 90.4 percent of original size [2023-11-17 15:55:02,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 90 treesize of output 128 [2023-11-17 15:55:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:55:03,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945710833] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:55:03,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:55:03,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 27 [2023-11-17 15:55:03,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973985346] [2023-11-17 15:55:03,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:55:03,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 15:55:03,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:55:03,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 15:55:03,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2023-11-17 15:55:03,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 446 [2023-11-17 15:55:03,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 1066 transitions, 35912 flow. Second operand has 27 states, 27 states have (on average 147.11111111111111) internal successors, (3972), 27 states have internal predecessors, (3972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:03,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:55:03,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 446 [2023-11-17 15:55:03,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:55:10,196 INFO L124 PetriNetUnfolderBase]: 7614/14305 cut-off events. [2023-11-17 15:55:10,196 INFO L125 PetriNetUnfolderBase]: For 500871/500871 co-relation queries the response was YES. [2023-11-17 15:55:10,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130757 conditions, 14305 events. 7614/14305 cut-off events. For 500871/500871 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 110403 event pairs, 1353 based on Foata normal form. 77/14382 useless extension candidates. Maximal degree in co-relation 130606. Up to 5225 conditions per place. [2023-11-17 15:55:10,371 INFO L140 encePairwiseOnDemand]: 430/446 looper letters, 568 selfloop transitions, 743 changer transitions 9/1320 dead transitions. [2023-11-17 15:55:10,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 1320 transitions, 42555 flow [2023-11-17 15:55:10,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-17 15:55:10,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-11-17 15:55:10,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 7277 transitions. [2023-11-17 15:55:10,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3399196562032885 [2023-11-17 15:55:10,376 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 7277 transitions. [2023-11-17 15:55:10,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 7277 transitions. [2023-11-17 15:55:10,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:55:10,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 7277 transitions. [2023-11-17 15:55:10,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 151.60416666666666) internal successors, (7277), 48 states have internal predecessors, (7277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:10,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 446.0) internal successors, (21854), 49 states have internal predecessors, (21854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:10,390 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 446.0) internal successors, (21854), 49 states have internal predecessors, (21854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:10,390 INFO L175 Difference]: Start difference. First operand has 583 places, 1066 transitions, 35912 flow. Second operand 48 states and 7277 transitions. [2023-11-17 15:55:10,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 1320 transitions, 42555 flow [2023-11-17 15:55:17,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 1320 transitions, 42331 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-17 15:55:17,638 INFO L231 Difference]: Finished difference. Result has 630 places, 1134 transitions, 39344 flow [2023-11-17 15:55:17,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=35428, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=671, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=39344, PETRI_PLACES=630, PETRI_TRANSITIONS=1134} [2023-11-17 15:55:17,639 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 604 predicate places. [2023-11-17 15:55:17,639 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 1134 transitions, 39344 flow [2023-11-17 15:55:17,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 147.11111111111111) internal successors, (3972), 27 states have internal predecessors, (3972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:17,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:55:17,640 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:55:17,645 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 15:55:17,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:55:17,845 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 15:55:17,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:55:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1700368666, now seen corresponding path program 10 times [2023-11-17 15:55:17,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:55:17,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201039227] [2023-11-17 15:55:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:55:17,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:55:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:55:18,194 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:55:18,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:55:18,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201039227] [2023-11-17 15:55:18,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201039227] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:55:18,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534020787] [2023-11-17 15:55:18,195 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:55:18,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:55:18,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:55:18,197 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 15:55:18,198 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 15:55:18,482 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:55:18,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:55:18,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 15:55:18,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:55:18,651 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-11-17 15:55:18,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2023-11-17 15:55:18,664 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:55:18,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:55:18,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534020787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:55:18,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:55:18,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 21 [2023-11-17 15:55:18,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899882944] [2023-11-17 15:55:18,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:55:18,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 15:55:18,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:55:18,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 15:55:18,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-11-17 15:55:18,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 446 [2023-11-17 15:55:18,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 1134 transitions, 39344 flow. Second operand has 9 states, 9 states have (on average 159.66666666666666) internal successors, (1437), 9 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:18,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:55:18,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 446 [2023-11-17 15:55:18,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:55:24,735 INFO L124 PetriNetUnfolderBase]: 7596/14258 cut-off events. [2023-11-17 15:55:24,735 INFO L125 PetriNetUnfolderBase]: For 528754/528754 co-relation queries the response was YES. [2023-11-17 15:55:24,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134841 conditions, 14258 events. 7596/14258 cut-off events. For 528754/528754 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 109949 event pairs, 3760 based on Foata normal form. 2/14260 useless extension candidates. Maximal degree in co-relation 134682. Up to 13298 conditions per place. [2023-11-17 15:55:24,937 INFO L140 encePairwiseOnDemand]: 436/446 looper letters, 965 selfloop transitions, 180 changer transitions 4/1149 dead transitions. [2023-11-17 15:55:24,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 1149 transitions, 41641 flow [2023-11-17 15:55:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:55:24,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:55:24,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1800 transitions. [2023-11-17 15:55:24,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36689767631471665 [2023-11-17 15:55:24,939 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1800 transitions. [2023-11-17 15:55:24,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1800 transitions. [2023-11-17 15:55:24,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:55:24,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1800 transitions. [2023-11-17 15:55:24,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 163.63636363636363) internal successors, (1800), 11 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:24,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 446.0) internal successors, (5352), 12 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:24,942 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 446.0) internal successors, (5352), 12 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:24,942 INFO L175 Difference]: Start difference. First operand has 630 places, 1134 transitions, 39344 flow. Second operand 11 states and 1800 transitions. [2023-11-17 15:55:24,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 1149 transitions, 41641 flow [2023-11-17 15:55:32,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 1149 transitions, 41028 flow, removed 85 selfloop flow, removed 22 redundant places. [2023-11-17 15:55:32,912 INFO L231 Difference]: Finished difference. Result has 616 places, 1129 transitions, 38874 flow [2023-11-17 15:55:32,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=38577, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=951, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=38874, PETRI_PLACES=616, PETRI_TRANSITIONS=1129} [2023-11-17 15:55:32,913 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 590 predicate places. [2023-11-17 15:55:32,913 INFO L495 AbstractCegarLoop]: Abstraction has has 616 places, 1129 transitions, 38874 flow [2023-11-17 15:55:32,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 159.66666666666666) internal successors, (1437), 9 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:32,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:55:32,914 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:55:32,922 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 15:55:33,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:55:33,120 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 15:55:33,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:55:33,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1547650282, now seen corresponding path program 11 times [2023-11-17 15:55:33,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:55:33,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227080636] [2023-11-17 15:55:33,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:55:33,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:55:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:55:33,486 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:55:33,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:55:33,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227080636] [2023-11-17 15:55:33,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227080636] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:55:33,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638495002] [2023-11-17 15:55:33,487 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:55:33,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:55:33,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:55:33,488 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 15:55:33,490 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 15:55:33,811 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 15:55:33,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:55:33,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-17 15:55:33,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:55:33,986 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-11-17 15:55:33,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2023-11-17 15:55:34,001 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:55:34,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:55:34,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638495002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:55:34,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:55:34,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 22 [2023-11-17 15:55:34,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18768920] [2023-11-17 15:55:34,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:55:34,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:55:34,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:55:34,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:55:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-11-17 15:55:34,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 446 [2023-11-17 15:55:34,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 1129 transitions, 38874 flow. Second operand has 11 states, 11 states have (on average 151.1818181818182) internal successors, (1663), 11 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:34,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:55:34,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 446 [2023-11-17 15:55:34,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:55:40,009 INFO L124 PetriNetUnfolderBase]: 7593/14253 cut-off events. [2023-11-17 15:55:40,010 INFO L125 PetriNetUnfolderBase]: For 524752/524752 co-relation queries the response was YES. [2023-11-17 15:55:40,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133491 conditions, 14253 events. 7593/14253 cut-off events. For 524752/524752 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 109911 event pairs, 3760 based on Foata normal form. 2/14255 useless extension candidates. Maximal degree in co-relation 133336. Up to 13283 conditions per place. [2023-11-17 15:55:40,184 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 973 selfloop transitions, 163 changer transitions 7/1143 dead transitions. [2023-11-17 15:55:40,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 1143 transitions, 41293 flow [2023-11-17 15:55:40,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:55:40,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:55:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1700 transitions. [2023-11-17 15:55:40,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465144720750102 [2023-11-17 15:55:40,186 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1700 transitions. [2023-11-17 15:55:40,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1700 transitions. [2023-11-17 15:55:40,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:55:40,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1700 transitions. [2023-11-17 15:55:40,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 154.54545454545453) internal successors, (1700), 11 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:40,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 446.0) internal successors, (5352), 12 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:40,189 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 446.0) internal successors, (5352), 12 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:40,189 INFO L175 Difference]: Start difference. First operand has 616 places, 1129 transitions, 38874 flow. Second operand 11 states and 1700 transitions. [2023-11-17 15:55:40,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 1143 transitions, 41293 flow [2023-11-17 15:55:47,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 1143 transitions, 40917 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-17 15:55:47,816 INFO L231 Difference]: Finished difference. Result has 613 places, 1126 transitions, 38740 flow [2023-11-17 15:55:47,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=38498, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=966, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=38740, PETRI_PLACES=613, PETRI_TRANSITIONS=1126} [2023-11-17 15:55:47,817 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 587 predicate places. [2023-11-17 15:55:47,817 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 1126 transitions, 38740 flow [2023-11-17 15:55:47,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 151.1818181818182) internal successors, (1663), 11 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:47,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:55:47,817 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:55:47,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-17 15:55:48,023 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,SelfDestructingSolverStorable88 [2023-11-17 15:55:48,023 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 15:55:48,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:55:48,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2117658120, now seen corresponding path program 12 times [2023-11-17 15:55:48,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:55:48,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815838778] [2023-11-17 15:55:48,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:55:48,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:55:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:55:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:55:48,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:55:48,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815838778] [2023-11-17 15:55:48,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815838778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:55:48,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974635356] [2023-11-17 15:55:48,391 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:55:48,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:55:48,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:55:48,392 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 15:55:48,394 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 15:55:48,689 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 15:55:48,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:55:48,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 15:55:48,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:55:48,868 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-17 15:55:48,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2023-11-17 15:55:48,907 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:55:48,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:55:48,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974635356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:55:48,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:55:48,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 21 [2023-11-17 15:55:48,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147489593] [2023-11-17 15:55:48,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:55:48,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:55:48,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:55:48,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:55:48,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2023-11-17 15:55:48,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 446 [2023-11-17 15:55:48,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 1126 transitions, 38740 flow. Second operand has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:48,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:55:48,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 446 [2023-11-17 15:55:48,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:55:55,040 INFO L124 PetriNetUnfolderBase]: 7595/14255 cut-off events. [2023-11-17 15:55:55,040 INFO L125 PetriNetUnfolderBase]: For 525284/525284 co-relation queries the response was YES. [2023-11-17 15:55:55,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133595 conditions, 14255 events. 7595/14255 cut-off events. For 525284/525284 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 109806 event pairs, 3760 based on Foata normal form. 2/14257 useless extension candidates. Maximal degree in co-relation 133439. Up to 13289 conditions per place. [2023-11-17 15:55:55,337 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 974 selfloop transitions, 167 changer transitions 5/1146 dead transitions. [2023-11-17 15:55:55,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 1146 transitions, 41391 flow [2023-11-17 15:55:55,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:55:55,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:55:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2005 transitions. [2023-11-17 15:55:55,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34580889962055883 [2023-11-17 15:55:55,339 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2005 transitions. [2023-11-17 15:55:55,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2005 transitions. [2023-11-17 15:55:55,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:55:55,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2005 transitions. [2023-11-17 15:55:55,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 154.23076923076923) internal successors, (2005), 13 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:55,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 446.0) internal successors, (6244), 14 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:55,343 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 446.0) internal successors, (6244), 14 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:55,343 INFO L175 Difference]: Start difference. First operand has 613 places, 1126 transitions, 38740 flow. Second operand 13 states and 2005 transitions. [2023-11-17 15:55:55,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 1146 transitions, 41391 flow [2023-11-17 15:56:03,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 1146 transitions, 41051 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-11-17 15:56:03,056 INFO L231 Difference]: Finished difference. Result has 614 places, 1129 transitions, 38921 flow [2023-11-17 15:56:03,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=38408, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=962, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=38921, PETRI_PLACES=614, PETRI_TRANSITIONS=1129} [2023-11-17 15:56:03,057 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 588 predicate places. [2023-11-17 15:56:03,057 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 1129 transitions, 38921 flow [2023-11-17 15:56:03,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:03,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:56:03,057 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:56:03,065 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 15:56:03,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2023-11-17 15:56:03,263 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 15:56:03,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:56:03,264 INFO L85 PathProgramCache]: Analyzing trace with hash -509265028, now seen corresponding path program 13 times [2023-11-17 15:56:03,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:56:03,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300984479] [2023-11-17 15:56:03,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:56:03,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:56:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:56:03,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:56:03,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300984479] [2023-11-17 15:56:03,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300984479] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:56:03,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88330142] [2023-11-17 15:56:03,649 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:56:03,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:56:03,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:56:03,650 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 15:56:03,653 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 15:56:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:03,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-17 15:56:03,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:56:04,159 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-17 15:56:04,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 37 [2023-11-17 15:56:04,232 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:56:04,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:56:04,527 INFO L349 Elim1Store]: treesize reduction 22, result has 88.0 percent of original size [2023-11-17 15:56:04,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 77 treesize of output 189 [2023-11-17 15:56:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:56:05,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88330142] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:56:05,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:56:05,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 26 [2023-11-17 15:56:05,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440808008] [2023-11-17 15:56:05,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:56:05,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 15:56:05,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:56:05,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 15:56:05,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2023-11-17 15:56:05,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 446 [2023-11-17 15:56:05,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 1129 transitions, 38921 flow. Second operand has 27 states, 27 states have (on average 147.07407407407408) internal successors, (3971), 27 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:05,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:56:05,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 446 [2023-11-17 15:56:05,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:56:11,844 INFO L124 PetriNetUnfolderBase]: 7638/14438 cut-off events. [2023-11-17 15:56:11,845 INFO L125 PetriNetUnfolderBase]: For 530767/530767 co-relation queries the response was YES. [2023-11-17 15:56:11,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134612 conditions, 14438 events. 7638/14438 cut-off events. For 530767/530767 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 112450 event pairs, 1420 based on Foata normal form. 6/14444 useless extension candidates. Maximal degree in co-relation 134455. Up to 4405 conditions per place. [2023-11-17 15:56:12,043 INFO L140 encePairwiseOnDemand]: 431/446 looper letters, 489 selfloop transitions, 722 changer transitions 11/1222 dead transitions. [2023-11-17 15:56:12,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 1222 transitions, 42281 flow [2023-11-17 15:56:12,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-17 15:56:12,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-17 15:56:12,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4831 transitions. [2023-11-17 15:56:12,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33849495515695066 [2023-11-17 15:56:12,046 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4831 transitions. [2023-11-17 15:56:12,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4831 transitions. [2023-11-17 15:56:12,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:56:12,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4831 transitions. [2023-11-17 15:56:12,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 150.96875) internal successors, (4831), 32 states have internal predecessors, (4831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:12,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 446.0) internal successors, (14718), 33 states have internal predecessors, (14718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:12,055 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 446.0) internal successors, (14718), 33 states have internal predecessors, (14718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:12,055 INFO L175 Difference]: Start difference. First operand has 614 places, 1129 transitions, 38921 flow. Second operand 32 states and 4831 transitions. [2023-11-17 15:56:12,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 1222 transitions, 42281 flow [2023-11-17 15:56:20,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 1222 transitions, 42046 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-11-17 15:56:20,216 INFO L231 Difference]: Finished difference. Result has 634 places, 1133 transitions, 40248 flow [2023-11-17 15:56:20,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=38686, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=718, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=40248, PETRI_PLACES=634, PETRI_TRANSITIONS=1133} [2023-11-17 15:56:20,217 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 608 predicate places. [2023-11-17 15:56:20,217 INFO L495 AbstractCegarLoop]: Abstraction has has 634 places, 1133 transitions, 40248 flow [2023-11-17 15:56:20,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 147.07407407407408) internal successors, (3971), 27 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:20,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:56:20,217 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:56:20,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-11-17 15:56:20,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:56:20,424 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 15:56:20,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:56:20,424 INFO L85 PathProgramCache]: Analyzing trace with hash -207206386, now seen corresponding path program 14 times [2023-11-17 15:56:20,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:56:20,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468870271] [2023-11-17 15:56:20,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:56:20,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:56:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:56:20,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:56:20,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468870271] [2023-11-17 15:56:20,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468870271] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:56:20,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386985779] [2023-11-17 15:56:20,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:56:20,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:56:20,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:56:20,793 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 15:56:20,795 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 15:56:21,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:56:21,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:56:21,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 15:56:21,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:56:21,306 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-17 15:56:21,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2023-11-17 15:56:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:56:21,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:56:21,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386985779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:56:21,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:56:21,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 20 [2023-11-17 15:56:21,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416434144] [2023-11-17 15:56:21,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:56:21,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:56:21,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:56:21,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:56:21,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2023-11-17 15:56:21,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 446 [2023-11-17 15:56:21,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 1133 transitions, 40248 flow. Second operand has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:21,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:56:21,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 446 [2023-11-17 15:56:21,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:56:27,366 INFO L124 PetriNetUnfolderBase]: 7624/14382 cut-off events. [2023-11-17 15:56:27,366 INFO L125 PetriNetUnfolderBase]: For 566004/566004 co-relation queries the response was YES. [2023-11-17 15:56:27,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139045 conditions, 14382 events. 7624/14382 cut-off events. For 566004/566004 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 111667 event pairs, 3811 based on Foata normal form. 2/14384 useless extension candidates. Maximal degree in co-relation 138888. Up to 13425 conditions per place. [2023-11-17 15:56:27,541 INFO L140 encePairwiseOnDemand]: 434/446 looper letters, 977 selfloop transitions, 164 changer transitions 4/1145 dead transitions. [2023-11-17 15:56:27,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 1145 transitions, 42579 flow [2023-11-17 15:56:27,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:56:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:56:27,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1853 transitions. [2023-11-17 15:56:27,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3462257100149477 [2023-11-17 15:56:27,543 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1853 transitions. [2023-11-17 15:56:27,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1853 transitions. [2023-11-17 15:56:27,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:56:27,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1853 transitions. [2023-11-17 15:56:27,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 154.41666666666666) internal successors, (1853), 12 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:27,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 446.0) internal successors, (5798), 13 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:27,547 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 446.0) internal successors, (5798), 13 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:27,547 INFO L175 Difference]: Start difference. First operand has 634 places, 1133 transitions, 40248 flow. Second operand 12 states and 1853 transitions. [2023-11-17 15:56:27,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 1145 transitions, 42579 flow [2023-11-17 15:56:35,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 620 places, 1145 transitions, 41571 flow, removed 21 selfloop flow, removed 23 redundant places. [2023-11-17 15:56:35,973 INFO L231 Difference]: Finished difference. Result has 621 places, 1131 transitions, 39474 flow [2023-11-17 15:56:35,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=39180, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=968, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=39474, PETRI_PLACES=621, PETRI_TRANSITIONS=1131} [2023-11-17 15:56:35,974 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 595 predicate places. [2023-11-17 15:56:35,975 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 1131 transitions, 39474 flow [2023-11-17 15:56:35,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:35,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:56:35,975 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:56:35,982 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 15:56:36,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:56:36,182 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 15:56:36,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:56:36,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2106905084, now seen corresponding path program 15 times [2023-11-17 15:56:36,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:56:36,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601771910] [2023-11-17 15:56:36,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:56:36,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:56:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:56:36,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:56:36,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601771910] [2023-11-17 15:56:36,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601771910] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:56:36,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869688756] [2023-11-17 15:56:36,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:56:36,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:56:36,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:56:36,531 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 15:56:36,557 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 15:56:36,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:56:36,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:56:36,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-17 15:56:36,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:56:37,031 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:56:37,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 55 [2023-11-17 15:56:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:56:37,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:56:37,292 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:56:37,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 177 treesize of output 205 [2023-11-17 15:56:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:56:37,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869688756] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:56:37,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:56:37,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 25 [2023-11-17 15:56:37,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866375392] [2023-11-17 15:56:37,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:56:37,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-17 15:56:37,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:56:37,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-17 15:56:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2023-11-17 15:56:37,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 446 [2023-11-17 15:56:37,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 1131 transitions, 39474 flow. Second operand has 26 states, 26 states have (on average 147.1153846153846) internal successors, (3825), 26 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:37,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:56:37,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 446 [2023-11-17 15:56:37,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:56:44,288 INFO L124 PetriNetUnfolderBase]: 7582/15170 cut-off events. [2023-11-17 15:56:44,288 INFO L125 PetriNetUnfolderBase]: For 544011/544011 co-relation queries the response was YES. [2023-11-17 15:56:44,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140348 conditions, 15170 events. 7582/15170 cut-off events. For 544011/544011 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 126906 event pairs, 1499 based on Foata normal form. 6/15176 useless extension candidates. Maximal degree in co-relation 140193. Up to 5634 conditions per place. [2023-11-17 15:56:44,512 INFO L140 encePairwiseOnDemand]: 433/446 looper letters, 578 selfloop transitions, 601 changer transitions 11/1190 dead transitions. [2023-11-17 15:56:44,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 1190 transitions, 42507 flow [2023-11-17 15:56:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 15:56:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 15:56:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2725 transitions. [2023-11-17 15:56:44,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3394369706028899 [2023-11-17 15:56:44,514 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2725 transitions. [2023-11-17 15:56:44,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2725 transitions. [2023-11-17 15:56:44,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:56:44,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2725 transitions. [2023-11-17 15:56:44,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 151.38888888888889) internal successors, (2725), 18 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:44,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 446.0) internal successors, (8474), 19 states have internal predecessors, (8474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:44,519 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 446.0) internal successors, (8474), 19 states have internal predecessors, (8474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:44,519 INFO L175 Difference]: Start difference. First operand has 621 places, 1131 transitions, 39474 flow. Second operand 18 states and 2725 transitions. [2023-11-17 15:56:44,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 1190 transitions, 42507 flow [2023-11-17 15:56:53,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 1190 transitions, 42162 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-11-17 15:56:53,099 INFO L231 Difference]: Finished difference. Result has 628 places, 1135 transitions, 40604 flow [2023-11-17 15:56:53,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=39129, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=595, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=40604, PETRI_PLACES=628, PETRI_TRANSITIONS=1135} [2023-11-17 15:56:53,100 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 602 predicate places. [2023-11-17 15:56:53,100 INFO L495 AbstractCegarLoop]: Abstraction has has 628 places, 1135 transitions, 40604 flow [2023-11-17 15:56:53,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 147.1153846153846) internal successors, (3825), 26 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:53,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:56:53,101 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:56:53,109 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 15:56:53,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:56:53,307 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 15:56:53,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:56:53,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2022368824, now seen corresponding path program 16 times [2023-11-17 15:56:53,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:56:53,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212241906] [2023-11-17 15:56:53,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:56:53,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:56:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:56:53,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:56:53,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212241906] [2023-11-17 15:56:53,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212241906] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:56:53,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993446747] [2023-11-17 15:56:53,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:56:53,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:56:53,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:56:53,713 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 15:56:53,715 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 15:56:54,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:56:54,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:56:54,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 15:56:54,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:56:54,169 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-11-17 15:56:54,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2023-11-17 15:56:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:56:54,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:56:54,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993446747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:56:54,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:56:54,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 22 [2023-11-17 15:56:54,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888759635] [2023-11-17 15:56:54,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:56:54,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 15:56:54,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:56:54,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 15:56:54,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2023-11-17 15:56:54,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 446 [2023-11-17 15:56:54,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 1135 transitions, 40604 flow. Second operand has 9 states, 9 states have (on average 159.66666666666666) internal successors, (1437), 9 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:54,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:56:54,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 446 [2023-11-17 15:56:54,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:00,719 INFO L124 PetriNetUnfolderBase]: 7542/15008 cut-off events. [2023-11-17 15:57:00,720 INFO L125 PetriNetUnfolderBase]: For 601407/601407 co-relation queries the response was YES. [2023-11-17 15:57:00,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143713 conditions, 15008 events. 7542/15008 cut-off events. For 601407/601407 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 124656 event pairs, 3974 based on Foata normal form. 2/15010 useless extension candidates. Maximal degree in co-relation 143556. Up to 14072 conditions per place. [2023-11-17 15:57:00,919 INFO L140 encePairwiseOnDemand]: 437/446 looper letters, 977 selfloop transitions, 159 changer transitions 4/1140 dead transitions. [2023-11-17 15:57:00,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 1140 transitions, 42711 flow [2023-11-17 15:57:00,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:57:00,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:57:00,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1634 transitions. [2023-11-17 15:57:00,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663677130044843 [2023-11-17 15:57:00,921 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1634 transitions. [2023-11-17 15:57:00,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1634 transitions. [2023-11-17 15:57:00,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:00,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1634 transitions. [2023-11-17 15:57:00,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 163.4) internal successors, (1634), 10 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:00,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:00,924 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 446.0) internal successors, (4906), 11 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:00,924 INFO L175 Difference]: Start difference. First operand has 628 places, 1135 transitions, 40604 flow. Second operand 10 states and 1634 transitions. [2023-11-17 15:57:00,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 1140 transitions, 42711 flow [2023-11-17 15:57:11,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 1140 transitions, 41814 flow, removed 9 selfloop flow, removed 14 redundant places. [2023-11-17 15:57:11,181 INFO L231 Difference]: Finished difference. Result has 621 places, 1128 transitions, 39746 flow [2023-11-17 15:57:11,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=39485, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=971, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=39746, PETRI_PLACES=621, PETRI_TRANSITIONS=1128} [2023-11-17 15:57:11,183 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 595 predicate places. [2023-11-17 15:57:11,183 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 1128 transitions, 39746 flow [2023-11-17 15:57:11,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 159.66666666666666) internal successors, (1437), 9 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:11,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:11,183 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:11,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-11-17 15:57:11,389 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,SelfDestructingSolverStorable93 [2023-11-17 15:57:11,389 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:57:11,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:11,390 INFO L85 PathProgramCache]: Analyzing trace with hash 590867190, now seen corresponding path program 17 times [2023-11-17 15:57:11,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:11,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517808675] [2023-11-17 15:57:11,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:11,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:57:12,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:12,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517808675] [2023-11-17 15:57:12,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517808675] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:57:12,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811791743] [2023-11-17 15:57:12,139 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:57:12,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:12,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:57:12,140 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 15:57:12,142 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 15:57:12,487 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 15:57:12,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:57:12,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-17 15:57:12,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:57:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:57:12,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:57:13,100 INFO L349 Elim1Store]: treesize reduction 11, result has 90.4 percent of original size [2023-11-17 15:57:13,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 124 [2023-11-17 15:57:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:57:13,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811791743] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:57:13,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:57:13,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 32 [2023-11-17 15:57:13,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004388408] [2023-11-17 15:57:13,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:57:13,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-17 15:57:13,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-17 15:57:13,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2023-11-17 15:57:13,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 446 [2023-11-17 15:57:13,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 1128 transitions, 39746 flow. Second operand has 33 states, 33 states have (on average 138.12121212121212) internal successors, (4558), 33 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:13,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:13,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 446 [2023-11-17 15:57:13,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:21,394 INFO L124 PetriNetUnfolderBase]: 7825/15500 cut-off events. [2023-11-17 15:57:21,394 INFO L125 PetriNetUnfolderBase]: For 602766/602766 co-relation queries the response was YES. [2023-11-17 15:57:21,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146872 conditions, 15500 events. 7825/15500 cut-off events. For 602766/602766 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 128867 event pairs, 1334 based on Foata normal form. 3/15503 useless extension candidates. Maximal degree in co-relation 146718. Up to 3221 conditions per place. [2023-11-17 15:57:21,638 INFO L140 encePairwiseOnDemand]: 432/446 looper letters, 481 selfloop transitions, 816 changer transitions 6/1303 dead transitions. [2023-11-17 15:57:21,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 1303 transitions, 45382 flow [2023-11-17 15:57:21,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 15:57:21,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 15:57:21,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3882 transitions. [2023-11-17 15:57:21,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3223716990533134 [2023-11-17 15:57:21,641 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3882 transitions. [2023-11-17 15:57:21,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3882 transitions. [2023-11-17 15:57:21,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:21,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3882 transitions. [2023-11-17 15:57:21,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 143.77777777777777) internal successors, (3882), 27 states have internal predecessors, (3882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:21,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 446.0) internal successors, (12488), 28 states have internal predecessors, (12488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:21,651 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 446.0) internal successors, (12488), 28 states have internal predecessors, (12488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:21,651 INFO L175 Difference]: Start difference. First operand has 621 places, 1128 transitions, 39746 flow. Second operand 27 states and 3882 transitions. [2023-11-17 15:57:21,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 1303 transitions, 45382 flow [2023-11-17 15:57:32,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 1303 transitions, 44899 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-11-17 15:57:32,052 INFO L231 Difference]: Finished difference. Result has 645 places, 1180 transitions, 43504 flow [2023-11-17 15:57:32,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=39263, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=764, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=43504, PETRI_PLACES=645, PETRI_TRANSITIONS=1180} [2023-11-17 15:57:32,053 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 619 predicate places. [2023-11-17 15:57:32,053 INFO L495 AbstractCegarLoop]: Abstraction has has 645 places, 1180 transitions, 43504 flow [2023-11-17 15:57:32,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 138.12121212121212) internal successors, (4558), 33 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:32,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:32,054 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:32,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-17 15:57:32,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:32,260 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:57:32,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:32,260 INFO L85 PathProgramCache]: Analyzing trace with hash -261840414, now seen corresponding path program 18 times [2023-11-17 15:57:32,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:32,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007124385] [2023-11-17 15:57:32,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:32,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:57:32,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:32,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007124385] [2023-11-17 15:57:32,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007124385] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:57:32,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100952786] [2023-11-17 15:57:32,824 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:57:32,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:32,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:57:32,825 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 15:57:32,827 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 15:57:33,175 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 15:57:33,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:57:33,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-17 15:57:33,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:57:33,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:57:33,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:57:33,426 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 15:57:33,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 26 [2023-11-17 15:57:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:57:33,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:57:33,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:57:33,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 127 [2023-11-17 15:57:33,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:57:33,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 56 [2023-11-17 15:57:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:57:34,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100952786] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:57:34,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:57:34,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 35 [2023-11-17 15:57:34,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271012357] [2023-11-17 15:57:34,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:57:34,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-17 15:57:34,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:34,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-17 15:57:34,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1116, Unknown=2, NotChecked=0, Total=1260 [2023-11-17 15:57:34,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 446 [2023-11-17 15:57:34,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 1180 transitions, 43504 flow. Second operand has 36 states, 36 states have (on average 138.0) internal successors, (4968), 36 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:34,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 446 [2023-11-17 15:57:34,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:43,259 INFO L124 PetriNetUnfolderBase]: 8485/16791 cut-off events. [2023-11-17 15:57:43,259 INFO L125 PetriNetUnfolderBase]: For 760701/760701 co-relation queries the response was YES. [2023-11-17 15:57:43,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166463 conditions, 16791 events. 8485/16791 cut-off events. For 760701/760701 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 141553 event pairs, 1189 based on Foata normal form. 134/16925 useless extension candidates. Maximal degree in co-relation 166303. Up to 2874 conditions per place. [2023-11-17 15:57:43,507 INFO L140 encePairwiseOnDemand]: 432/446 looper letters, 443 selfloop transitions, 1054 changer transitions 0/1497 dead transitions. [2023-11-17 15:57:43,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 1497 transitions, 54404 flow [2023-11-17 15:57:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-17 15:57:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-11-17 15:57:43,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 5568 transitions. [2023-11-17 15:57:43,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32011038289065197 [2023-11-17 15:57:43,511 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 5568 transitions. [2023-11-17 15:57:43,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 5568 transitions. [2023-11-17 15:57:43,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:43,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 5568 transitions. [2023-11-17 15:57:43,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 142.76923076923077) internal successors, (5568), 39 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:43,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 446.0) internal successors, (17840), 40 states have internal predecessors, (17840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:43,605 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 446.0) internal successors, (17840), 40 states have internal predecessors, (17840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:43,606 INFO L175 Difference]: Start difference. First operand has 645 places, 1180 transitions, 43504 flow. Second operand 39 states and 5568 transitions. [2023-11-17 15:57:43,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 1497 transitions, 54404 flow [2023-11-17 15:57:57,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 660 places, 1497 transitions, 53159 flow, removed 31 selfloop flow, removed 18 redundant places. [2023-11-17 15:57:57,742 INFO L231 Difference]: Finished difference. Result has 669 places, 1328 transitions, 51706 flow [2023-11-17 15:57:57,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=41850, PETRI_DIFFERENCE_MINUEND_PLACES=622, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=887, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=51706, PETRI_PLACES=669, PETRI_TRANSITIONS=1328} [2023-11-17 15:57:57,743 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 643 predicate places. [2023-11-17 15:57:57,743 INFO L495 AbstractCegarLoop]: Abstraction has has 669 places, 1328 transitions, 51706 flow [2023-11-17 15:57:57,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 138.0) internal successors, (4968), 36 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:57,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:57,744 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:57,750 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 15:57:57,949 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,SelfDestructingSolverStorable95 [2023-11-17 15:57:57,950 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:57:57,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:57,950 INFO L85 PathProgramCache]: Analyzing trace with hash 94044816, now seen corresponding path program 19 times [2023-11-17 15:57:57,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:57,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982527931] [2023-11-17 15:57:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:57,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:57:58,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:58,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982527931] [2023-11-17 15:57:58,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982527931] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:57:58,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100378907] [2023-11-17 15:57:58,490 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:57:58,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:58,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:57:58,491 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 15:57:58,493 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 15:57:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:58,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-17 15:57:58,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:57:58,973 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-17 15:57:58,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 37 [2023-11-17 15:57:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:57:59,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:57:59,428 INFO L349 Elim1Store]: treesize reduction 11, result has 90.4 percent of original size [2023-11-17 15:57:59,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 124 [2023-11-17 15:57:59,824 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:57:59,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100378907] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:57:59,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:57:59,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2023-11-17 15:57:59,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334008484] [2023-11-17 15:57:59,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:57:59,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-17 15:57:59,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:59,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-17 15:57:59,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2023-11-17 15:57:59,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 446 [2023-11-17 15:57:59,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 669 places, 1328 transitions, 51706 flow. Second operand has 30 states, 30 states have (on average 142.1) internal successors, (4263), 30 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:59,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:59,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 446 [2023-11-17 15:57:59,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:09,059 INFO L124 PetriNetUnfolderBase]: 8708/17204 cut-off events. [2023-11-17 15:58:09,059 INFO L125 PetriNetUnfolderBase]: For 840348/840348 co-relation queries the response was YES. [2023-11-17 15:58:09,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175708 conditions, 17204 events. 8708/17204 cut-off events. For 840348/840348 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 144758 event pairs, 1554 based on Foata normal form. 6/17210 useless extension candidates. Maximal degree in co-relation 175543. Up to 3850 conditions per place. [2023-11-17 15:58:09,512 INFO L140 encePairwiseOnDemand]: 430/446 looper letters, 483 selfloop transitions, 978 changer transitions 10/1471 dead transitions. [2023-11-17 15:58:09,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 1471 transitions, 57570 flow [2023-11-17 15:58:09,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-17 15:58:09,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-17 15:58:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4526 transitions. [2023-11-17 15:58:09,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3273542600896861 [2023-11-17 15:58:09,516 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4526 transitions. [2023-11-17 15:58:09,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4526 transitions. [2023-11-17 15:58:09,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:09,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4526 transitions. [2023-11-17 15:58:09,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 146.0) internal successors, (4526), 31 states have internal predecessors, (4526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 446.0) internal successors, (14272), 32 states have internal predecessors, (14272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,525 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 446.0) internal successors, (14272), 32 states have internal predecessors, (14272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,525 INFO L175 Difference]: Start difference. First operand has 669 places, 1328 transitions, 51706 flow. Second operand 31 states and 4526 transitions. [2023-11-17 15:58:09,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 1471 transitions, 57570 flow [2023-11-17 15:58:26,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 683 places, 1471 transitions, 56817 flow, removed 106 selfloop flow, removed 16 redundant places. [2023-11-17 15:58:26,419 INFO L231 Difference]: Finished difference. Result has 688 places, 1375 transitions, 55439 flow [2023-11-17 15:58:26,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=50991, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=928, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=55439, PETRI_PLACES=688, PETRI_TRANSITIONS=1375} [2023-11-17 15:58:26,420 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 662 predicate places. [2023-11-17 15:58:26,420 INFO L495 AbstractCegarLoop]: Abstraction has has 688 places, 1375 transitions, 55439 flow [2023-11-17 15:58:26,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 142.1) internal successors, (4263), 30 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:26,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:26,421 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:26,443 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 15:58:26,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:26,627 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:26,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1726256044, now seen corresponding path program 20 times [2023-11-17 15:58:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:26,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685325082] [2023-11-17 15:58:26,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:26,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:58:27,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:27,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685325082] [2023-11-17 15:58:27,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685325082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:27,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093560537] [2023-11-17 15:58:27,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:58:27,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:27,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:27,017 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 15:58:27,039 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 15:58:27,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:27,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:27,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 15:58:27,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:27,540 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-17 15:58:27,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 18 [2023-11-17 15:58:27,555 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:58:27,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:58:27,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093560537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:27,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:58:27,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 19 [2023-11-17 15:58:27,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376300863] [2023-11-17 15:58:27,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:27,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:27,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:27,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:27,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-11-17 15:58:27,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 446 [2023-11-17 15:58:27,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 1375 transitions, 55439 flow. Second operand has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:27,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:27,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 446 [2023-11-17 15:58:27,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:36,660 INFO L124 PetriNetUnfolderBase]: 8695/17151 cut-off events. [2023-11-17 15:58:36,660 INFO L125 PetriNetUnfolderBase]: For 911547/911547 co-relation queries the response was YES. [2023-11-17 15:58:36,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179115 conditions, 17151 events. 8695/17151 cut-off events. For 911547/911547 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 144152 event pairs, 3270 based on Foata normal form. 2/17153 useless extension candidates. Maximal degree in co-relation 178945. Up to 13148 conditions per place. [2023-11-17 15:58:36,925 INFO L140 encePairwiseOnDemand]: 435/446 looper letters, 1203 selfloop transitions, 191 changer transitions 7/1401 dead transitions. [2023-11-17 15:58:36,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 696 places, 1401 transitions, 58434 flow [2023-11-17 15:58:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:58:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:58:36,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1701 transitions. [2023-11-17 15:58:36,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467183041174073 [2023-11-17 15:58:36,927 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1701 transitions. [2023-11-17 15:58:36,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1701 transitions. [2023-11-17 15:58:36,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:36,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1701 transitions. [2023-11-17 15:58:36,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 154.63636363636363) internal successors, (1701), 11 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:36,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 446.0) internal successors, (5352), 12 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:36,930 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 446.0) internal successors, (5352), 12 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:36,930 INFO L175 Difference]: Start difference. First operand has 688 places, 1375 transitions, 55439 flow. Second operand 11 states and 1701 transitions. [2023-11-17 15:58:36,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 696 places, 1401 transitions, 58434 flow [2023-11-17 15:58:52,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 1401 transitions, 57315 flow, removed 8 selfloop flow, removed 21 redundant places. [2023-11-17 15:58:52,301 INFO L231 Difference]: Finished difference. Result has 676 places, 1372 transitions, 54605 flow [2023-11-17 15:58:52,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=54324, PETRI_DIFFERENCE_MINUEND_PLACES=665, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=54605, PETRI_PLACES=676, PETRI_TRANSITIONS=1372} [2023-11-17 15:58:52,302 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 650 predicate places. [2023-11-17 15:58:52,302 INFO L495 AbstractCegarLoop]: Abstraction has has 676 places, 1372 transitions, 54605 flow [2023-11-17 15:58:52,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:52,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:52,302 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:52,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-17 15:58:52,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:52,508 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:58:52,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:52,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1432333572, now seen corresponding path program 21 times [2023-11-17 15:58:52,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:52,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637035643] [2023-11-17 15:58:52,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:52,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:58:52,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:52,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637035643] [2023-11-17 15:58:52,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637035643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:52,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:52,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-17 15:58:52,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936327139] [2023-11-17 15:58:52,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:52,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:58:52,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:52,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:58:52,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:58:52,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 446 [2023-11-17 15:58:52,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 1372 transitions, 54605 flow. Second operand has 13 states, 13 states have (on average 141.84615384615384) internal successors, (1844), 13 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:52,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:52,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 446 [2023-11-17 15:58:52,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:01,844 INFO L124 PetriNetUnfolderBase]: 8667/17091 cut-off events. [2023-11-17 15:59:01,845 INFO L125 PetriNetUnfolderBase]: For 854352/854352 co-relation queries the response was YES. [2023-11-17 15:59:02,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177238 conditions, 17091 events. 8667/17091 cut-off events. For 854352/854352 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 143579 event pairs, 4377 based on Foata normal form. 6/17097 useless extension candidates. Maximal degree in co-relation 177069. Up to 16157 conditions per place. [2023-11-17 15:59:02,112 INFO L140 encePairwiseOnDemand]: 435/446 looper letters, 1145 selfloop transitions, 232 changer transitions 4/1381 dead transitions. [2023-11-17 15:59:02,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 1381 transitions, 57103 flow [2023-11-17 15:59:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:59:02,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:59:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1750 transitions. [2023-11-17 15:59:02,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32698056801195813 [2023-11-17 15:59:02,114 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1750 transitions. [2023-11-17 15:59:02,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1750 transitions. [2023-11-17 15:59:02,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:02,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1750 transitions. [2023-11-17 15:59:02,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 145.83333333333334) internal successors, (1750), 12 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:02,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 446.0) internal successors, (5798), 13 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:02,117 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 446.0) internal successors, (5798), 13 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:02,117 INFO L175 Difference]: Start difference. First operand has 676 places, 1372 transitions, 54605 flow. Second operand 12 states and 1750 transitions. [2023-11-17 15:59:02,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 1381 transitions, 57103 flow Received shutdown request... [2023-11-17 15:59:10,690 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 15:59:10,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2023-11-17 15:59:10,690 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-11-17 15:59:10,691 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 15:59:10,691 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 15:59:10,692 INFO L445 BasicCegarLoop]: Path program histogram: [28, 24, 21, 14, 7, 3, 1, 1] [2023-11-17 15:59:10,694 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:59:10,694 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:59:10,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:59:10 BasicIcfg [2023-11-17 15:59:10,695 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:59:10,696 INFO L158 Benchmark]: Toolchain (without parser) took 535350.66ms. Allocated memory was 298.8MB in the beginning and 5.4GB in the end (delta: 5.1GB). Free memory was 259.4MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2023-11-17 15:59:10,696 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 197.1MB. Free memory is still 146.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:59:10,696 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.61ms. Allocated memory is still 298.8MB. Free memory was 259.4MB in the beginning and 247.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-11-17 15:59:10,696 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.73ms. Allocated memory is still 298.8MB. Free memory was 247.3MB in the beginning and 245.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:59:10,696 INFO L158 Benchmark]: Boogie Preprocessor took 18.59ms. Allocated memory is still 298.8MB. Free memory was 245.2MB in the beginning and 243.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:59:10,696 INFO L158 Benchmark]: RCFGBuilder took 395.43ms. Allocated memory is still 298.8MB. Free memory was 243.7MB in the beginning and 224.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-11-17 15:59:10,696 INFO L158 Benchmark]: TraceAbstraction took 534699.96ms. Allocated memory was 298.8MB in the beginning and 5.4GB in the end (delta: 5.1GB). Free memory was 223.8MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2023-11-17 15:59:10,697 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 197.1MB. Free memory is still 146.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 196.61ms. Allocated memory is still 298.8MB. Free memory was 259.4MB in the beginning and 247.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.73ms. Allocated memory is still 298.8MB. Free memory was 247.3MB in the beginning and 245.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.59ms. Allocated memory is still 298.8MB. Free memory was 245.2MB in the beginning and 243.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 395.43ms. Allocated memory is still 298.8MB. Free memory was 243.7MB in the beginning and 224.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 534699.96ms. Allocated memory was 298.8MB in the beginning and 5.4GB in the end (delta: 5.1GB). Free memory was 223.8MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 193 PlacesBefore, 26 PlacesAfterwards, 205 TransitionsBefore, 25 TransitionsAfterwards, 3672 CoEnabledTransitionPairs, 7 FixpointIterations, 109 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 22 ConcurrentYvCompositions, 13 ChoiceCompositions, 230 TotalNumberOfCompositions, 4336 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3591, independent: 3521, independent conditional: 0, independent unconditional: 3521, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2785, independent: 2762, independent conditional: 0, independent unconditional: 2762, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2785, independent: 2762, independent conditional: 0, independent unconditional: 2762, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 23, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 35, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3591, independent: 759, independent conditional: 0, independent unconditional: 759, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 2785, unknown conditional: 0, unknown unconditional: 2785] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 87]: 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, 264 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: 534.6s, OverallIterations: 99, TraceHistogramMax: 5, PathProgramHistogramMax: 28, EmptinessCheckTime: 0.0s, AutomataDifference: 451.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15099 SdHoareTripleChecker+Valid, 24.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15099 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 20.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 874 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52511 IncrementalHoareTripleChecker+Invalid, 53385 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 874 mSolverCounterUnsat, 10 mSDtfsCounter, 52511 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4034 GetRequests, 1549 SyntacticMatches, 3 SemanticMatches, 2482 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18050 ImplicationChecksByTransitivity, 30.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55439occurred in iteration=97, InterpolantAutomatonStates: 1632, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 57.2s InterpolantComputationTime, 4080 NumberOfCodeBlocks, 3894 NumberOfCodeBlocksAsserted, 183 NumberOfCheckSat, 4403 ConstructedInterpolants, 38 QuantifiedInterpolants, 44360 SizeOfPredicates, 574 NumberOfNonLiveVariables, 9687 ConjunctsInSsa, 934 ConjunctsInUnsatCore, 157 InterpolantComputations, 84 PerfectInterpolantSequences, 4269/4609 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