/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-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:50:37,071 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:50:37,162 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 15:50:37,194 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:50:37,195 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:50:37,196 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:50:37,196 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:50:37,197 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:50:37,197 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:50:37,201 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:50:37,201 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:50:37,202 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:50:37,202 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:50:37,203 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:50:37,203 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:50:37,203 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:50:37,204 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:50:37,204 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:50:37,204 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:50:37,204 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:50:37,204 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:50:37,205 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:50:37,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:50:37,206 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:50:37,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:50:37,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:50:37,207 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:50:37,207 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:50:37,207 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:50:37,208 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:50:37,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:50:37,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:50:37,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:50:37,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:50:37,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:50:37,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:50:37,496 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:50:37,496 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:50:37,497 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-11-17 15:50:38,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:50:38,859 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:50:38,859 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-11-17 15:50:38,869 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b0391e84/04115f9307624c6f922f3086e978c6ae/FLAGf0f48e643 [2023-11-17 15:50:38,888 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b0391e84/04115f9307624c6f922f3086e978c6ae [2023-11-17 15:50:38,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:50:38,892 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:50:38,895 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:50:38,895 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:50:38,899 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:50:38,900 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:50:38" (1/1) ... [2023-11-17 15:50:38,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30bee6e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:38, skipping insertion in model container [2023-11-17 15:50:38,901 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:50:38" (1/1) ... [2023-11-17 15:50:38,934 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:50:39,112 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-subst.wvr.c[3136,3149] [2023-11-17 15:50:39,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:50:39,130 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:50:39,158 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-subst.wvr.c[3136,3149] [2023-11-17 15:50:39,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:50:39,182 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:50:39,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:39 WrapperNode [2023-11-17 15:50:39,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:50:39,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:50:39,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:50:39,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:50:39,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:39" (1/1) ... [2023-11-17 15:50:39,203 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:39" (1/1) ... [2023-11-17 15:50:39,232 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 286 [2023-11-17 15:50:39,233 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:50:39,234 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:50:39,234 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:50:39,234 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:50:39,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:39" (1/1) ... [2023-11-17 15:50:39,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:39" (1/1) ... [2023-11-17 15:50:39,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:39" (1/1) ... [2023-11-17 15:50:39,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:39" (1/1) ... [2023-11-17 15:50:39,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:39" (1/1) ... [2023-11-17 15:50:39,260 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:39" (1/1) ... [2023-11-17 15:50:39,262 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:39" (1/1) ... [2023-11-17 15:50:39,264 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:39" (1/1) ... [2023-11-17 15:50:39,268 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:50:39,269 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:50:39,269 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:50:39,269 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:50:39,270 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:39" (1/1) ... [2023-11-17 15:50:39,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:50:39,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:39,322 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 15:50:39,344 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 15:50:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:50:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:50:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:50:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:50:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:50:39,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:50:39,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:50:39,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:50:39,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 15:50:39,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 15:50:39,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:50:39,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 15:50:39,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:50:39,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:50:39,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:50:39,358 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 15:50:39,504 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:50:39,509 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:50:40,044 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:50:40,071 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:50:40,071 INFO L307 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-17 15:50:40,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:50:40 BoogieIcfgContainer [2023-11-17 15:50:40,074 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:50:40,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:50:40,077 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:50:40,080 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:50:40,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:50:38" (1/3) ... [2023-11-17 15:50:40,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d66ef4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:50:40, skipping insertion in model container [2023-11-17 15:50:40,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:39" (2/3) ... [2023-11-17 15:50:40,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d66ef4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:50:40, skipping insertion in model container [2023-11-17 15:50:40,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:50:40" (3/3) ... [2023-11-17 15:50:40,083 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2023-11-17 15:50:40,100 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:50:40,100 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:50:40,100 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:50:40,274 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 15:50:40,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 353 places, 372 transitions, 765 flow [2023-11-17 15:50:40,418 INFO L124 PetriNetUnfolderBase]: 29/369 cut-off events. [2023-11-17 15:50:40,418 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:50:40,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 369 events. 29/369 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 582 event pairs, 0 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 279. Up to 2 conditions per place. [2023-11-17 15:50:40,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 353 places, 372 transitions, 765 flow [2023-11-17 15:50:40,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 358 transitions, 734 flow [2023-11-17 15:50:40,454 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:50:40,471 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 339 places, 358 transitions, 734 flow [2023-11-17 15:50:40,475 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 339 places, 358 transitions, 734 flow [2023-11-17 15:50:40,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 358 transitions, 734 flow [2023-11-17 15:50:40,544 INFO L124 PetriNetUnfolderBase]: 29/358 cut-off events. [2023-11-17 15:50:40,545 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:50:40,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 358 events. 29/358 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 579 event pairs, 0 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 279. Up to 2 conditions per place. [2023-11-17 15:50:40,557 INFO L119 LiptonReduction]: Number of co-enabled transitions 21384 [2023-11-17 15:50:49,329 INFO L134 LiptonReduction]: Checked pairs total: 19637 [2023-11-17 15:50:49,329 INFO L136 LiptonReduction]: Total number of compositions: 418 [2023-11-17 15:50:49,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:50:49,371 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;@1944ffe9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:50:49,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:50:49,378 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:50:49,379 INFO L124 PetriNetUnfolderBase]: 6/29 cut-off events. [2023-11-17 15:50:49,379 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:50:49,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:49,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:49,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:49,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:49,388 INFO L85 PathProgramCache]: Analyzing trace with hash -122329688, now seen corresponding path program 1 times [2023-11-17 15:50:49,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:49,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948212226] [2023-11-17 15:50:49,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:49,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:49,862 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 15:50:49,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:49,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948212226] [2023-11-17 15:50:49,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948212226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:49,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:49,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:50:49,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798259837] [2023-11-17 15:50:49,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:49,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:50:49,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:49,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:50:49,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:50:49,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 790 [2023-11-17 15:50:49,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 310.3333333333333) internal successors, (931), 3 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:49,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:49,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 790 [2023-11-17 15:50:49,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:50,056 INFO L124 PetriNetUnfolderBase]: 370/545 cut-off events. [2023-11-17 15:50:50,056 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-17 15:50:50,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 545 events. 370/545 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1529 event pairs, 253 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 936. Up to 543 conditions per place. [2023-11-17 15:50:50,061 INFO L140 encePairwiseOnDemand]: 783/790 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-11-17 15:50:50,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 150 flow [2023-11-17 15:50:50,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:50:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:50:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 945 transitions. [2023-11-17 15:50:50,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3987341772151899 [2023-11-17 15:50:50,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 945 transitions. [2023-11-17 15:50:50,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 945 transitions. [2023-11-17 15:50:50,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:50,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 945 transitions. [2023-11-17 15:50:50,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:50,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:50,101 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:50,103 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 78 flow. Second operand 3 states and 945 transitions. [2023-11-17 15:50:50,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 150 flow [2023-11-17 15:50:50,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 138 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 15:50:50,109 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 98 flow [2023-11-17 15:50:50,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2023-11-17 15:50:50,113 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-11-17 15:50:50,113 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 98 flow [2023-11-17 15:50:50,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.3333333333333) internal successors, (931), 3 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:50,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:50,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:50,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:50:50,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:50,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:50,115 INFO L85 PathProgramCache]: Analyzing trace with hash 342912108, now seen corresponding path program 1 times [2023-11-17 15:50:50,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:50,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631461174] [2023-11-17 15:50:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:50,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 15:50:50,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:50,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631461174] [2023-11-17 15:50:50,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631461174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:50,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:50,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:50:50,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224079296] [2023-11-17 15:50:50,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:50,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:50:50,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:50,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:50:50,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:50:50,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 790 [2023-11-17 15:50:50,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 335.25) internal successors, (1341), 4 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:50,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:50,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 790 [2023-11-17 15:50:50,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:50,517 INFO L124 PetriNetUnfolderBase]: 658/966 cut-off events. [2023-11-17 15:50:50,517 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 15:50:50,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1985 conditions, 966 events. 658/966 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3431 event pairs, 253 based on Foata normal form. 1/754 useless extension candidates. Maximal degree in co-relation 1954. Up to 546 conditions per place. [2023-11-17 15:50:50,521 INFO L140 encePairwiseOnDemand]: 787/790 looper letters, 45 selfloop transitions, 2 changer transitions 6/53 dead transitions. [2023-11-17 15:50:50,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 53 transitions, 249 flow [2023-11-17 15:50:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:50:50,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:50:50,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1038 transitions. [2023-11-17 15:50:50,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4379746835443038 [2023-11-17 15:50:50,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1038 transitions. [2023-11-17 15:50:50,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1038 transitions. [2023-11-17 15:50:50,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:50,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1038 transitions. [2023-11-17 15:50:50,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:50,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:50,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:50,534 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 98 flow. Second operand 3 states and 1038 transitions. [2023-11-17 15:50:50,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 53 transitions, 249 flow [2023-11-17 15:50:50,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 53 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:50:50,536 INFO L231 Difference]: Finished difference. Result has 33 places, 34 transitions, 104 flow [2023-11-17 15:50:50,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=34} [2023-11-17 15:50:50,537 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-11-17 15:50:50,537 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 34 transitions, 104 flow [2023-11-17 15:50:50,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 335.25) internal successors, (1341), 4 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:50,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:50,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:50,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:50:50,539 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:50,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:50,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1651366233, now seen corresponding path program 1 times [2023-11-17 15:50:50,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:50,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690325864] [2023-11-17 15:50:50,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:50,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:50,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 15:50:50,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:50,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690325864] [2023-11-17 15:50:50,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690325864] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:50,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659864554] [2023-11-17 15:50:50,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:50,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:50,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:50,661 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 15:50:50,680 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 15:50:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:50,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 15:50:50,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:50,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 15:50:50,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:50:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 15:50:50,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659864554] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:50:50,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:50:50,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-17 15:50:50,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756809174] [2023-11-17 15:50:50,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:50:50,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 15:50:50,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:50,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 15:50:50,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:50:50,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 790 [2023-11-17 15:50:50,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 104 flow. Second operand has 8 states, 8 states have (on average 307.125) internal successors, (2457), 8 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:50,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:50,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 790 [2023-11-17 15:50:50,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:51,083 INFO L124 PetriNetUnfolderBase]: 658/975 cut-off events. [2023-11-17 15:50:51,083 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2023-11-17 15:50:51,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 975 events. 658/975 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3183 event pairs, 477 based on Foata normal form. 0/760 useless extension candidates. Maximal degree in co-relation 2085. Up to 964 conditions per place. [2023-11-17 15:50:51,088 INFO L140 encePairwiseOnDemand]: 783/790 looper letters, 28 selfloop transitions, 15 changer transitions 0/43 dead transitions. [2023-11-17 15:50:51,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 226 flow [2023-11-17 15:50:51,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:50:51,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:50:51,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1869 transitions. [2023-11-17 15:50:51,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3943037974683544 [2023-11-17 15:50:51,094 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1869 transitions. [2023-11-17 15:50:51,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1869 transitions. [2023-11-17 15:50:51,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:51,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1869 transitions. [2023-11-17 15:50:51,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 311.5) internal successors, (1869), 6 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:51,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 790.0) internal successors, (5530), 7 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:51,110 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 790.0) internal successors, (5530), 7 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:51,110 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 104 flow. Second operand 6 states and 1869 transitions. [2023-11-17 15:50:51,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 226 flow [2023-11-17 15:50:51,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:50:51,113 INFO L231 Difference]: Finished difference. Result has 40 places, 43 transitions, 198 flow [2023-11-17 15:50:51,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2023-11-17 15:50:51,114 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-11-17 15:50:51,114 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 198 flow [2023-11-17 15:50:51,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 307.125) internal successors, (2457), 8 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:51,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:51,116 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:51,128 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 15:50:51,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:51,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:51,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:51,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1815413869, now seen corresponding path program 2 times [2023-11-17 15:50:51,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:51,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905098856] [2023-11-17 15:50:51,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:51,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:51,583 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-17 15:50:51,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:51,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905098856] [2023-11-17 15:50:51,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905098856] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:51,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708800153] [2023-11-17 15:50:51,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:50:51,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:51,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:51,586 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 15:50:51,609 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 15:50:51,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:50:51,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:51,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:50:51,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-17 15:50:51,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:50:51,952 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-17 15:50:51,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708800153] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:50:51,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:50:51,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-11-17 15:50:51,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751710672] [2023-11-17 15:50:51,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:50:51,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 15:50:51,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:51,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 15:50:51,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:50:51,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 790 [2023-11-17 15:50:51,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 198 flow. Second operand has 17 states, 17 states have (on average 305.5882352941176) internal successors, (5195), 17 states have internal predecessors, (5195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:51,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:51,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 790 [2023-11-17 15:50:51,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:52,138 INFO L124 PetriNetUnfolderBase]: 658/978 cut-off events. [2023-11-17 15:50:52,138 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2023-11-17 15:50:52,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2158 conditions, 978 events. 658/978 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3183 event pairs, 477 based on Foata normal form. 1/765 useless extension candidates. Maximal degree in co-relation 2057. Up to 964 conditions per place. [2023-11-17 15:50:52,143 INFO L140 encePairwiseOnDemand]: 783/790 looper letters, 28 selfloop transitions, 18 changer transitions 0/46 dead transitions. [2023-11-17 15:50:52,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 308 flow [2023-11-17 15:50:52,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:50:52,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:50:52,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2169 transitions. [2023-11-17 15:50:52,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3922242314647378 [2023-11-17 15:50:52,150 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2169 transitions. [2023-11-17 15:50:52,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2169 transitions. [2023-11-17 15:50:52,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:52,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2169 transitions. [2023-11-17 15:50:52,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 309.85714285714283) internal successors, (2169), 7 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:52,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 790.0) internal successors, (6320), 8 states have internal predecessors, (6320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:52,165 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 790.0) internal successors, (6320), 8 states have internal predecessors, (6320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:52,166 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 198 flow. Second operand 7 states and 2169 transitions. [2023-11-17 15:50:52,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 308 flow [2023-11-17 15:50:52,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 284 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-17 15:50:52,169 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 242 flow [2023-11-17 15:50:52,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-11-17 15:50:52,169 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-11-17 15:50:52,170 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 242 flow [2023-11-17 15:50:52,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 305.5882352941176) internal successors, (5195), 17 states have internal predecessors, (5195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:52,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:52,172 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:52,181 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 15:50:52,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-17 15:50:52,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:52,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:52,382 INFO L85 PathProgramCache]: Analyzing trace with hash -528045991, now seen corresponding path program 3 times [2023-11-17 15:50:52,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:52,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291915398] [2023-11-17 15:50:52,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:52,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 15:50:52,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:52,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291915398] [2023-11-17 15:50:52,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291915398] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:52,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723371095] [2023-11-17 15:50:52,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:50:52,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:52,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:52,825 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 15:50:52,849 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 15:50:52,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:50:52,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:52,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 15:50:52,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 15:50:53,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:53,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723371095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:53,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:53,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 15:50:53,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460228264] [2023-11-17 15:50:53,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:53,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:50:53,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:53,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:50:53,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:50:53,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 790 [2023-11-17 15:50:53,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:53,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:53,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 790 [2023-11-17 15:50:53,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:53,418 INFO L124 PetriNetUnfolderBase]: 1407/2064 cut-off events. [2023-11-17 15:50:53,419 INFO L125 PetriNetUnfolderBase]: For 253/253 co-relation queries the response was YES. [2023-11-17 15:50:53,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4475 conditions, 2064 events. 1407/2064 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8514 event pairs, 477 based on Foata normal form. 1/1561 useless extension candidates. Maximal degree in co-relation 4365. Up to 1015 conditions per place. [2023-11-17 15:50:53,429 INFO L140 encePairwiseOnDemand]: 785/790 looper letters, 76 selfloop transitions, 5 changer transitions 1/82 dead transitions. [2023-11-17 15:50:53,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 82 transitions, 499 flow [2023-11-17 15:50:53,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:50:53,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:50:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1333 transitions. [2023-11-17 15:50:53,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4218354430379747 [2023-11-17 15:50:53,457 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1333 transitions. [2023-11-17 15:50:53,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1333 transitions. [2023-11-17 15:50:53,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:53,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1333 transitions. [2023-11-17 15:50:53,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 333.25) internal successors, (1333), 4 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:53,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:53,467 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:53,467 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 242 flow. Second operand 4 states and 1333 transitions. [2023-11-17 15:50:53,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 82 transitions, 499 flow [2023-11-17 15:50:53,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 82 transitions, 463 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-17 15:50:53,471 INFO L231 Difference]: Finished difference. Result has 47 places, 50 transitions, 239 flow [2023-11-17 15:50:53,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=47, PETRI_TRANSITIONS=50} [2023-11-17 15:50:53,474 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2023-11-17 15:50:53,474 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 239 flow [2023-11-17 15:50:53,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:53,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:53,475 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:53,483 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 15:50:53,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:53,681 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:53,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:53,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1258133745, now seen corresponding path program 4 times [2023-11-17 15:50:53,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:53,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744768807] [2023-11-17 15:50:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:53,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:54,047 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 15:50:54,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:54,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744768807] [2023-11-17 15:50:54,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744768807] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:54,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897125338] [2023-11-17 15:50:54,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:50:54,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:54,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:54,049 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 15:50:54,073 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 15:50:54,207 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:50:54,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:54,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 15:50:54,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:50:54,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:54,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897125338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:54,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:54,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 15:50:54,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973873055] [2023-11-17 15:50:54,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:54,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:50:54,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:54,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:50:54,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:50:54,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 790 [2023-11-17 15:50:54,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 50 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:54,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:54,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 790 [2023-11-17 15:50:54,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:54,719 INFO L124 PetriNetUnfolderBase]: 2025/2955 cut-off events. [2023-11-17 15:50:54,719 INFO L125 PetriNetUnfolderBase]: For 1137/1137 co-relation queries the response was YES. [2023-11-17 15:50:54,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7394 conditions, 2955 events. 2025/2955 cut-off events. For 1137/1137 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12795 event pairs, 820 based on Foata normal form. 1/2516 useless extension candidates. Maximal degree in co-relation 7299. Up to 1739 conditions per place. [2023-11-17 15:50:54,735 INFO L140 encePairwiseOnDemand]: 785/790 looper letters, 76 selfloop transitions, 7 changer transitions 1/84 dead transitions. [2023-11-17 15:50:54,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 84 transitions, 509 flow [2023-11-17 15:50:54,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:50:54,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:50:54,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1331 transitions. [2023-11-17 15:50:54,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42120253164556964 [2023-11-17 15:50:54,739 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1331 transitions. [2023-11-17 15:50:54,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1331 transitions. [2023-11-17 15:50:54,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:54,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1331 transitions. [2023-11-17 15:50:54,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 332.75) internal successors, (1331), 4 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:54,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:54,748 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:54,749 INFO L175 Difference]: Start difference. First operand has 47 places, 50 transitions, 239 flow. Second operand 4 states and 1331 transitions. [2023-11-17 15:50:54,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 84 transitions, 509 flow [2023-11-17 15:50:54,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 84 transitions, 509 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:50:54,753 INFO L231 Difference]: Finished difference. Result has 52 places, 54 transitions, 288 flow [2023-11-17 15:50:54,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=52, PETRI_TRANSITIONS=54} [2023-11-17 15:50:54,754 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2023-11-17 15:50:54,754 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 54 transitions, 288 flow [2023-11-17 15:50:54,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:54,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:54,758 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:54,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 15:50:54,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:54,958 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:54,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:54,959 INFO L85 PathProgramCache]: Analyzing trace with hash -994214304, now seen corresponding path program 1 times [2023-11-17 15:50:54,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:54,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332492747] [2023-11-17 15:50:54,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:54,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:50:55,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:55,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332492747] [2023-11-17 15:50:55,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332492747] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:55,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809130101] [2023-11-17 15:50:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:55,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:55,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:55,246 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 15:50:55,270 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 15:50:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:55,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 15:50:55,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:50:55,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:55,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809130101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:55,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:55,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 15:50:55,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677937306] [2023-11-17 15:50:55,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:55,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:50:55,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:55,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:50:55,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:50:55,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 790 [2023-11-17 15:50:55,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 54 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 330.6) internal successors, (1653), 5 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:55,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:55,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 790 [2023-11-17 15:50:55,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:55,948 INFO L124 PetriNetUnfolderBase]: 2197/3199 cut-off events. [2023-11-17 15:50:55,948 INFO L125 PetriNetUnfolderBase]: For 2563/2563 co-relation queries the response was YES. [2023-11-17 15:50:55,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9024 conditions, 3199 events. 2197/3199 cut-off events. For 2563/2563 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14155 event pairs, 382 based on Foata normal form. 0/2743 useless extension candidates. Maximal degree in co-relation 8926. Up to 1217 conditions per place. [2023-11-17 15:50:55,966 INFO L140 encePairwiseOnDemand]: 783/790 looper letters, 88 selfloop transitions, 9 changer transitions 0/97 dead transitions. [2023-11-17 15:50:55,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 97 transitions, 621 flow [2023-11-17 15:50:55,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:50:55,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:50:55,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1697 transitions. [2023-11-17 15:50:55,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.429620253164557 [2023-11-17 15:50:55,972 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1697 transitions. [2023-11-17 15:50:55,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1697 transitions. [2023-11-17 15:50:55,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:55,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1697 transitions. [2023-11-17 15:50:55,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 339.4) internal successors, (1697), 5 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:55,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:55,983 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:55,983 INFO L175 Difference]: Start difference. First operand has 52 places, 54 transitions, 288 flow. Second operand 5 states and 1697 transitions. [2023-11-17 15:50:55,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 97 transitions, 621 flow [2023-11-17 15:50:55,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 97 transitions, 619 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-17 15:50:55,993 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 333 flow [2023-11-17 15:50:55,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=333, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-11-17 15:50:55,994 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 24 predicate places. [2023-11-17 15:50:55,994 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 333 flow [2023-11-17 15:50:55,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.6) internal successors, (1653), 5 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:55,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:55,995 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:56,004 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 15:50:56,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:56,202 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:56,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:56,202 INFO L85 PathProgramCache]: Analyzing trace with hash -520256850, now seen corresponding path program 2 times [2023-11-17 15:50:56,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:56,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144405661] [2023-11-17 15:50:56,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:56,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:50:56,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:56,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144405661] [2023-11-17 15:50:56,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144405661] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:56,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475647206] [2023-11-17 15:50:56,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:50:56,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:56,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:56,489 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 15:50:56,515 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 15:50:56,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:50:56,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:56,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 15:50:56,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 15:50:56,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:56,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475647206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:56,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:56,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 15:50:56,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426592430] [2023-11-17 15:50:56,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:56,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:50:56,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:56,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:50:56,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:50:56,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 790 [2023-11-17 15:50:56,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 333 flow. Second operand has 5 states, 5 states have (on average 330.6) internal successors, (1653), 5 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:56,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:56,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 790 [2023-11-17 15:50:56,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:57,213 INFO L124 PetriNetUnfolderBase]: 2233/3281 cut-off events. [2023-11-17 15:50:57,213 INFO L125 PetriNetUnfolderBase]: For 5247/5247 co-relation queries the response was YES. [2023-11-17 15:50:57,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9962 conditions, 3281 events. 2233/3281 cut-off events. For 5247/5247 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 14997 event pairs, 777 based on Foata normal form. 22/3083 useless extension candidates. Maximal degree in co-relation 9860. Up to 1558 conditions per place. [2023-11-17 15:50:57,237 INFO L140 encePairwiseOnDemand]: 785/790 looper letters, 78 selfloop transitions, 8 changer transitions 15/101 dead transitions. [2023-11-17 15:50:57,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 693 flow [2023-11-17 15:50:57,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:50:57,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:50:57,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1698 transitions. [2023-11-17 15:50:57,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.429873417721519 [2023-11-17 15:50:57,242 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1698 transitions. [2023-11-17 15:50:57,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1698 transitions. [2023-11-17 15:50:57,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:57,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1698 transitions. [2023-11-17 15:50:57,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 339.6) internal successors, (1698), 5 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:57,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:57,252 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:57,252 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 333 flow. Second operand 5 states and 1698 transitions. [2023-11-17 15:50:57,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 693 flow [2023-11-17 15:50:57,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 676 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 15:50:57,266 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 355 flow [2023-11-17 15:50:57,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-11-17 15:50:57,267 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2023-11-17 15:50:57,267 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 355 flow [2023-11-17 15:50:57,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.6) internal successors, (1653), 5 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:57,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:57,268 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:57,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 15:50:57,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:57,474 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:57,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:57,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1028241030, now seen corresponding path program 3 times [2023-11-17 15:50:57,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:57,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866077023] [2023-11-17 15:50:57,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:57,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:50:57,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:57,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866077023] [2023-11-17 15:50:57,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866077023] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:57,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586478466] [2023-11-17 15:50:57,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:50:57,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:57,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:57,779 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 15:50:57,800 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 15:50:58,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:50:58,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:58,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 15:50:58,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:50:58,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:50:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:50:58,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586478466] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:58,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:50:58,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 11 [2023-11-17 15:50:58,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144307572] [2023-11-17 15:50:58,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:58,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:50:58,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:58,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:50:58,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:50:58,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 790 [2023-11-17 15:50:58,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 355 flow. Second operand has 5 states, 5 states have (on average 330.6) internal successors, (1653), 5 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:58,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:58,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 790 [2023-11-17 15:50:58,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:58,628 INFO L124 PetriNetUnfolderBase]: 2319/3404 cut-off events. [2023-11-17 15:50:58,628 INFO L125 PetriNetUnfolderBase]: For 6350/6350 co-relation queries the response was YES. [2023-11-17 15:50:58,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10967 conditions, 3404 events. 2319/3404 cut-off events. For 6350/6350 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15599 event pairs, 558 based on Foata normal form. 36/3212 useless extension candidates. Maximal degree in co-relation 10862. Up to 1211 conditions per place. [2023-11-17 15:50:58,656 INFO L140 encePairwiseOnDemand]: 784/790 looper letters, 96 selfloop transitions, 13 changer transitions 1/110 dead transitions. [2023-11-17 15:50:58,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 110 transitions, 773 flow [2023-11-17 15:50:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:50:58,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:50:58,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1705 transitions. [2023-11-17 15:50:58,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4316455696202532 [2023-11-17 15:50:58,661 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1705 transitions. [2023-11-17 15:50:58,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1705 transitions. [2023-11-17 15:50:58,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:58,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1705 transitions. [2023-11-17 15:50:58,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:58,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:58,673 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:58,673 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 355 flow. Second operand 5 states and 1705 transitions. [2023-11-17 15:50:58,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 110 transitions, 773 flow [2023-11-17 15:50:58,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 110 transitions, 760 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 15:50:58,685 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 423 flow [2023-11-17 15:50:58,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=423, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-11-17 15:50:58,686 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 33 predicate places. [2023-11-17 15:50:58,686 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 423 flow [2023-11-17 15:50:58,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.6) internal successors, (1653), 5 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:58,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:58,687 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:58,692 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 15:50:58,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:58,892 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:58,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:58,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1691890166, now seen corresponding path program 4 times [2023-11-17 15:50:58,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:58,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649703094] [2023-11-17 15:50:58,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:58,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:50:59,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:59,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649703094] [2023-11-17 15:50:59,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649703094] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:59,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041992506] [2023-11-17 15:50:59,183 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:50:59,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:59,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:59,185 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 15:50:59,209 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 15:50:59,371 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:50:59,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:59,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 15:50:59,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:50:59,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:59,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041992506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:59,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:59,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 15:50:59,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839946609] [2023-11-17 15:50:59,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:59,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:50:59,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:59,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:50:59,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:50:59,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 790 [2023-11-17 15:50:59,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 423 flow. Second operand has 5 states, 5 states have (on average 330.6) internal successors, (1653), 5 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:59,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:59,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 790 [2023-11-17 15:50:59,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:59,908 INFO L124 PetriNetUnfolderBase]: 2239/3277 cut-off events. [2023-11-17 15:50:59,908 INFO L125 PetriNetUnfolderBase]: For 7915/7915 co-relation queries the response was YES. [2023-11-17 15:50:59,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11612 conditions, 3277 events. 2239/3277 cut-off events. For 7915/7915 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 14810 event pairs, 749 based on Foata normal form. 22/3079 useless extension candidates. Maximal degree in co-relation 11505. Up to 1558 conditions per place. [2023-11-17 15:50:59,929 INFO L140 encePairwiseOnDemand]: 785/790 looper letters, 76 selfloop transitions, 11 changer transitions 13/100 dead transitions. [2023-11-17 15:50:59,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 100 transitions, 743 flow [2023-11-17 15:50:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:50:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:50:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1698 transitions. [2023-11-17 15:50:59,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.429873417721519 [2023-11-17 15:50:59,934 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1698 transitions. [2023-11-17 15:50:59,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1698 transitions. [2023-11-17 15:50:59,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:59,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1698 transitions. [2023-11-17 15:50:59,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 339.6) internal successors, (1698), 5 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:59,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:59,944 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:59,944 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 423 flow. Second operand 5 states and 1698 transitions. [2023-11-17 15:50:59,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 100 transitions, 743 flow [2023-11-17 15:50:59,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 100 transitions, 743 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:50:59,959 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 452 flow [2023-11-17 15:50:59,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2023-11-17 15:50:59,961 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 38 predicate places. [2023-11-17 15:50:59,961 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 452 flow [2023-11-17 15:50:59,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.6) internal successors, (1653), 5 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:50:59,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:59,962 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:59,967 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 15:51:00,167 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,SelfDestructingSolverStorable9 [2023-11-17 15:51:00,167 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:51:00,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:00,168 INFO L85 PathProgramCache]: Analyzing trace with hash -7051458, now seen corresponding path program 5 times [2023-11-17 15:51:00,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:00,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097264969] [2023-11-17 15:51:00,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:00,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:00,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:00,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097264969] [2023-11-17 15:51:00,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097264969] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:00,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064393064] [2023-11-17 15:51:00,434 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:51:00,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:00,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:51:00,436 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 15:51:00,457 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 15:51:00,777 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 15:51:00,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:51:00,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 15:51:00,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:51:00,822 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:00,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:51:00,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064393064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:00,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:51:00,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 15:51:00,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012061136] [2023-11-17 15:51:00,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:00,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:51:00,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:00,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:51:00,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:51:00,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 790 [2023-11-17 15:51:00,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 452 flow. Second operand has 5 states, 5 states have (on average 330.6) internal successors, (1653), 5 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:00,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:00,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 790 [2023-11-17 15:51:00,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:01,309 INFO L124 PetriNetUnfolderBase]: 2145/3137 cut-off events. [2023-11-17 15:51:01,310 INFO L125 PetriNetUnfolderBase]: For 10425/10425 co-relation queries the response was YES. [2023-11-17 15:51:01,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11640 conditions, 3137 events. 2145/3137 cut-off events. For 10425/10425 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13877 event pairs, 922 based on Foata normal form. 22/2947 useless extension candidates. Maximal degree in co-relation 11531. Up to 2061 conditions per place. [2023-11-17 15:51:01,334 INFO L140 encePairwiseOnDemand]: 785/790 looper letters, 79 selfloop transitions, 9 changer transitions 13/101 dead transitions. [2023-11-17 15:51:01,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 101 transitions, 787 flow [2023-11-17 15:51:01,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:51:01,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:51:01,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1696 transitions. [2023-11-17 15:51:01,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4293670886075949 [2023-11-17 15:51:01,340 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1696 transitions. [2023-11-17 15:51:01,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1696 transitions. [2023-11-17 15:51:01,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:01,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1696 transitions. [2023-11-17 15:51:01,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 339.2) internal successors, (1696), 5 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:01,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:01,350 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:01,350 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 452 flow. Second operand 5 states and 1696 transitions. [2023-11-17 15:51:01,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 101 transitions, 787 flow [2023-11-17 15:51:01,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 101 transitions, 759 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-17 15:51:01,374 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 449 flow [2023-11-17 15:51:01,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=449, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-11-17 15:51:01,375 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 39 predicate places. [2023-11-17 15:51:01,375 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 449 flow [2023-11-17 15:51:01,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.6) internal successors, (1653), 5 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:01,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:01,377 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:01,386 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 15:51:01,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:01,583 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:51:01,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:01,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1456117970, now seen corresponding path program 6 times [2023-11-17 15:51:01,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:01,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864438479] [2023-11-17 15:51:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:01,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:01,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:01,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864438479] [2023-11-17 15:51:01,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864438479] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:01,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320808776] [2023-11-17 15:51:01,889 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:51:01,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:01,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:51:01,890 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 15:51:01,917 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 15:51:02,225 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 15:51:02,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:51:02,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 15:51:02,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:51:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:02,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:51:02,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320808776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:02,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:51:02,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 15:51:02,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296085929] [2023-11-17 15:51:02,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:02,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:51:02,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:02,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:51:02,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:51:02,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 790 [2023-11-17 15:51:02,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 449 flow. Second operand has 5 states, 5 states have (on average 330.6) internal successors, (1653), 5 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:02,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:02,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 790 [2023-11-17 15:51:02,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:02,803 INFO L124 PetriNetUnfolderBase]: 2065/3000 cut-off events. [2023-11-17 15:51:02,804 INFO L125 PetriNetUnfolderBase]: For 10026/10026 co-relation queries the response was YES. [2023-11-17 15:51:02,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11300 conditions, 3000 events. 2065/3000 cut-off events. For 10026/10026 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13008 event pairs, 826 based on Foata normal form. 36/2832 useless extension candidates. Maximal degree in co-relation 11190. Up to 1798 conditions per place. [2023-11-17 15:51:02,825 INFO L140 encePairwiseOnDemand]: 784/790 looper letters, 97 selfloop transitions, 12 changer transitions 1/110 dead transitions. [2023-11-17 15:51:02,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 110 transitions, 841 flow [2023-11-17 15:51:02,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:51:02,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:51:02,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2029 transitions. [2023-11-17 15:51:02,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42805907172995783 [2023-11-17 15:51:02,831 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2029 transitions. [2023-11-17 15:51:02,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2029 transitions. [2023-11-17 15:51:02,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:02,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2029 transitions. [2023-11-17 15:51:02,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 338.1666666666667) internal successors, (2029), 6 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:02,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 790.0) internal successors, (5530), 7 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:02,843 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 790.0) internal successors, (5530), 7 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:02,843 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 449 flow. Second operand 6 states and 2029 transitions. [2023-11-17 15:51:02,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 110 transitions, 841 flow [2023-11-17 15:51:02,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 110 transitions, 813 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-17 15:51:02,865 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 475 flow [2023-11-17 15:51:02,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=475, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2023-11-17 15:51:02,867 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 42 predicate places. [2023-11-17 15:51:02,867 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 475 flow [2023-11-17 15:51:02,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.6) internal successors, (1653), 5 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:02,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:02,868 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:02,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 15:51:03,074 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,SelfDestructingSolverStorable11 [2023-11-17 15:51:03,074 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:51:03,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:03,074 INFO L85 PathProgramCache]: Analyzing trace with hash -713119675, now seen corresponding path program 1 times [2023-11-17 15:51:03,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:03,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014011304] [2023-11-17 15:51:03,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:03,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:03,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:03,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014011304] [2023-11-17 15:51:03,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014011304] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:03,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241077948] [2023-11-17 15:51:03,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:03,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:03,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:51:03,317 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 15:51:03,336 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 15:51:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:03,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 15:51:03,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:51:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 15:51:03,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:51:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 15:51:03,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241077948] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:03,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:51:03,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 10 [2023-11-17 15:51:03,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395233675] [2023-11-17 15:51:03,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:03,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:51:03,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:03,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:51:03,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:51:03,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 790 [2023-11-17 15:51:03,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 475 flow. Second operand has 5 states, 5 states have (on average 330.8) internal successors, (1654), 5 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:03,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:03,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 790 [2023-11-17 15:51:03,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:04,109 INFO L124 PetriNetUnfolderBase]: 2188/3163 cut-off events. [2023-11-17 15:51:04,110 INFO L125 PetriNetUnfolderBase]: For 9105/9105 co-relation queries the response was YES. [2023-11-17 15:51:04,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12221 conditions, 3163 events. 2188/3163 cut-off events. For 9105/9105 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13994 event pairs, 180 based on Foata normal form. 76/3027 useless extension candidates. Maximal degree in co-relation 12109. Up to 2033 conditions per place. [2023-11-17 15:51:04,132 INFO L140 encePairwiseOnDemand]: 783/790 looper letters, 93 selfloop transitions, 13 changer transitions 0/106 dead transitions. [2023-11-17 15:51:04,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 106 transitions, 857 flow [2023-11-17 15:51:04,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:51:04,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:51:04,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1694 transitions. [2023-11-17 15:51:04,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42886075949367086 [2023-11-17 15:51:04,137 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1694 transitions. [2023-11-17 15:51:04,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1694 transitions. [2023-11-17 15:51:04,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:04,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1694 transitions. [2023-11-17 15:51:04,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.8) internal successors, (1694), 5 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 15:51:04,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:04,147 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:04,148 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 475 flow. Second operand 5 states and 1694 transitions. [2023-11-17 15:51:04,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 106 transitions, 857 flow [2023-11-17 15:51:04,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 106 transitions, 790 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-11-17 15:51:04,174 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 499 flow [2023-11-17 15:51:04,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=499, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2023-11-17 15:51:04,175 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 39 predicate places. [2023-11-17 15:51:04,175 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 499 flow [2023-11-17 15:51:04,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.8) internal successors, (1654), 5 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:04,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:04,176 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:04,184 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 15:51:04,381 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,SelfDestructingSolverStorable12 [2023-11-17 15:51:04,381 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:51:04,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:04,382 INFO L85 PathProgramCache]: Analyzing trace with hash -393099803, now seen corresponding path program 2 times [2023-11-17 15:51:04,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:04,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155199564] [2023-11-17 15:51:04,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:04,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:04,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:04,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155199564] [2023-11-17 15:51:04,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155199564] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:04,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966536805] [2023-11-17 15:51:04,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:51:04,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:04,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:51:04,623 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 15:51:04,645 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 15:51:04,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:51:04,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:51:04,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 15:51:04,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:51:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:04,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:51:04,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966536805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:04,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:51:04,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 15:51:04,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362582352] [2023-11-17 15:51:04,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:04,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:51:04,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:04,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:51:04,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:51:04,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 790 [2023-11-17 15:51:04,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 499 flow. Second operand has 5 states, 5 states have (on average 330.8) internal successors, (1654), 5 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:04,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:04,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 790 [2023-11-17 15:51:04,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:05,392 INFO L124 PetriNetUnfolderBase]: 2170/3145 cut-off events. [2023-11-17 15:51:05,392 INFO L125 PetriNetUnfolderBase]: For 9206/9206 co-relation queries the response was YES. [2023-11-17 15:51:05,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12062 conditions, 3145 events. 2170/3145 cut-off events. For 9206/9206 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13888 event pairs, 752 based on Foata normal form. 18/2951 useless extension candidates. Maximal degree in co-relation 11951. Up to 1803 conditions per place. [2023-11-17 15:51:05,416 INFO L140 encePairwiseOnDemand]: 784/790 looper letters, 82 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2023-11-17 15:51:05,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 787 flow [2023-11-17 15:51:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:51:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:51:05,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1689 transitions. [2023-11-17 15:51:05,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275949367088608 [2023-11-17 15:51:05,421 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1689 transitions. [2023-11-17 15:51:05,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1689 transitions. [2023-11-17 15:51:05,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:05,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1689 transitions. [2023-11-17 15:51:05,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 337.8) internal successors, (1689), 5 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:05,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:05,433 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:05,433 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 499 flow. Second operand 5 states and 1689 transitions. [2023-11-17 15:51:05,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 787 flow [2023-11-17 15:51:05,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 768 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-17 15:51:05,457 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 535 flow [2023-11-17 15:51:05,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=535, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2023-11-17 15:51:05,458 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 43 predicate places. [2023-11-17 15:51:05,459 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 535 flow [2023-11-17 15:51:05,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.8) internal successors, (1654), 5 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:05,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:05,459 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:05,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-17 15:51:05,665 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,SelfDestructingSolverStorable13 [2023-11-17 15:51:05,665 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:51:05,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:05,666 INFO L85 PathProgramCache]: Analyzing trace with hash 726527389, now seen corresponding path program 3 times [2023-11-17 15:51:05,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:05,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517276935] [2023-11-17 15:51:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:05,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:05,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:05,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517276935] [2023-11-17 15:51:05,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517276935] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:05,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117539611] [2023-11-17 15:51:05,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:51:05,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:05,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:51:05,940 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 15:51:05,951 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 15:51:06,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:51:06,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:51:06,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 15:51:06,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:51:06,182 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:06,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:51:06,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117539611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:06,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:51:06,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 15:51:06,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662839179] [2023-11-17 15:51:06,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:06,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:51:06,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:06,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:51:06,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:51:06,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 790 [2023-11-17 15:51:06,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 535 flow. Second operand has 5 states, 5 states have (on average 330.8) internal successors, (1654), 5 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:06,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:06,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 790 [2023-11-17 15:51:06,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:06,719 INFO L124 PetriNetUnfolderBase]: 2260/3275 cut-off events. [2023-11-17 15:51:06,719 INFO L125 PetriNetUnfolderBase]: For 10263/10263 co-relation queries the response was YES. [2023-11-17 15:51:06,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13182 conditions, 3275 events. 2260/3275 cut-off events. For 10263/10263 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14470 event pairs, 770 based on Foata normal form. 76/3131 useless extension candidates. Maximal degree in co-relation 13070. Up to 1825 conditions per place. [2023-11-17 15:51:06,749 INFO L140 encePairwiseOnDemand]: 784/790 looper letters, 94 selfloop transitions, 16 changer transitions 1/111 dead transitions. [2023-11-17 15:51:06,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 111 transitions, 894 flow [2023-11-17 15:51:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:51:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:51:06,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2029 transitions. [2023-11-17 15:51:06,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42805907172995783 [2023-11-17 15:51:06,754 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2029 transitions. [2023-11-17 15:51:06,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2029 transitions. [2023-11-17 15:51:06,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:06,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2029 transitions. [2023-11-17 15:51:06,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 338.1666666666667) internal successors, (2029), 6 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:06,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 790.0) internal successors, (5530), 7 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:06,765 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 790.0) internal successors, (5530), 7 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:06,765 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 535 flow. Second operand 6 states and 2029 transitions. [2023-11-17 15:51:06,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 111 transitions, 894 flow [2023-11-17 15:51:06,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 111 transitions, 862 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-17 15:51:06,795 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 544 flow [2023-11-17 15:51:06,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=544, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2023-11-17 15:51:06,797 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 46 predicate places. [2023-11-17 15:51:06,797 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 544 flow [2023-11-17 15:51:06,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.8) internal successors, (1654), 5 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:06,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:06,798 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:06,806 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 15:51:07,006 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,SelfDestructingSolverStorable14 [2023-11-17 15:51:07,006 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:51:07,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:07,007 INFO L85 PathProgramCache]: Analyzing trace with hash -948380533, now seen corresponding path program 4 times [2023-11-17 15:51:07,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:07,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268388567] [2023-11-17 15:51:07,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:07,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:07,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:07,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268388567] [2023-11-17 15:51:07,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268388567] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:07,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788690429] [2023-11-17 15:51:07,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:51:07,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:07,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:51:07,255 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 15:51:07,259 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 15:51:07,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:51:07,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:51:07,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 15:51:07,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:51:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:07,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:51:07,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788690429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:07,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:51:07,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 15:51:07,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630030811] [2023-11-17 15:51:07,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:07,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:51:07,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:07,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:51:07,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:51:07,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 790 [2023-11-17 15:51:07,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 544 flow. Second operand has 5 states, 5 states have (on average 330.8) internal successors, (1654), 5 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:07,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:07,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 790 [2023-11-17 15:51:07,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:08,054 INFO L124 PetriNetUnfolderBase]: 2242/3257 cut-off events. [2023-11-17 15:51:08,054 INFO L125 PetriNetUnfolderBase]: For 12776/12776 co-relation queries the response was YES. [2023-11-17 15:51:08,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13563 conditions, 3257 events. 2242/3257 cut-off events. For 12776/12776 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14406 event pairs, 847 based on Foata normal form. 18/3055 useless extension candidates. Maximal degree in co-relation 13450. Up to 2087 conditions per place. [2023-11-17 15:51:08,085 INFO L140 encePairwiseOnDemand]: 785/790 looper letters, 87 selfloop transitions, 13 changer transitions 9/109 dead transitions. [2023-11-17 15:51:08,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 109 transitions, 924 flow [2023-11-17 15:51:08,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:51:08,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:51:08,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1693 transitions. [2023-11-17 15:51:08,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42860759493670886 [2023-11-17 15:51:08,091 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1693 transitions. [2023-11-17 15:51:08,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1693 transitions. [2023-11-17 15:51:08,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:08,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1693 transitions. [2023-11-17 15:51:08,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.6) internal successors, (1693), 5 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:08,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:08,102 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:08,102 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 544 flow. Second operand 5 states and 1693 transitions. [2023-11-17 15:51:08,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 109 transitions, 924 flow [2023-11-17 15:51:08,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 109 transitions, 877 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-17 15:51:08,138 INFO L231 Difference]: Finished difference. Result has 81 places, 70 transitions, 555 flow [2023-11-17 15:51:08,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=555, PETRI_PLACES=81, PETRI_TRANSITIONS=70} [2023-11-17 15:51:08,139 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 47 predicate places. [2023-11-17 15:51:08,139 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 70 transitions, 555 flow [2023-11-17 15:51:08,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.8) internal successors, (1654), 5 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:08,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:08,140 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:08,149 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 15:51:08,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:08,346 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:51:08,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:08,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2075713693, now seen corresponding path program 5 times [2023-11-17 15:51:08,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:08,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344202041] [2023-11-17 15:51:08,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:08,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:08,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:08,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344202041] [2023-11-17 15:51:08,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344202041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:08,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105762718] [2023-11-17 15:51:08,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:51:08,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:08,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:51:08,583 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 15:51:08,606 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 15:51:09,029 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 15:51:09,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:51:09,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 15:51:09,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:51:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:09,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:51:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:09,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105762718] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:09,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:51:09,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 11 [2023-11-17 15:51:09,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408566862] [2023-11-17 15:51:09,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:09,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:51:09,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:09,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:51:09,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:51:09,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 790 [2023-11-17 15:51:09,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 70 transitions, 555 flow. Second operand has 5 states, 5 states have (on average 330.8) internal successors, (1654), 5 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:09,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:09,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 790 [2023-11-17 15:51:09,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:09,662 INFO L124 PetriNetUnfolderBase]: 2141/3138 cut-off events. [2023-11-17 15:51:09,663 INFO L125 PetriNetUnfolderBase]: For 13140/13140 co-relation queries the response was YES. [2023-11-17 15:51:09,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13278 conditions, 3138 events. 2141/3138 cut-off events. For 13140/13140 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 13932 event pairs, 847 based on Foata normal form. 76/2998 useless extension candidates. Maximal degree in co-relation 13164. Up to 2087 conditions per place. [2023-11-17 15:51:09,694 INFO L140 encePairwiseOnDemand]: 785/790 looper letters, 92 selfloop transitions, 15 changer transitions 1/108 dead transitions. [2023-11-17 15:51:09,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 108 transitions, 913 flow [2023-11-17 15:51:09,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:51:09,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:51:09,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1696 transitions. [2023-11-17 15:51:09,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4293670886075949 [2023-11-17 15:51:09,698 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1696 transitions. [2023-11-17 15:51:09,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1696 transitions. [2023-11-17 15:51:09,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:09,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1696 transitions. [2023-11-17 15:51:09,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 339.2) internal successors, (1696), 5 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:09,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:09,707 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:09,707 INFO L175 Difference]: Start difference. First operand has 81 places, 70 transitions, 555 flow. Second operand 5 states and 1696 transitions. [2023-11-17 15:51:09,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 108 transitions, 913 flow [2023-11-17 15:51:09,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 108 transitions, 884 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-17 15:51:09,743 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 577 flow [2023-11-17 15:51:09,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=577, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2023-11-17 15:51:09,743 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 49 predicate places. [2023-11-17 15:51:09,744 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 577 flow [2023-11-17 15:51:09,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.8) internal successors, (1654), 5 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:09,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:09,744 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:09,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-17 15:51:09,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-17 15:51:09,951 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:51:09,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:09,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1745193629, now seen corresponding path program 6 times [2023-11-17 15:51:09,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:09,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220517907] [2023-11-17 15:51:09,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:09,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:10,177 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:10,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:10,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220517907] [2023-11-17 15:51:10,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220517907] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:10,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371565588] [2023-11-17 15:51:10,178 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:51:10,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:10,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:51:10,179 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 15:51:10,200 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 15:51:10,551 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 15:51:10,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:51:10,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 15:51:10,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:51:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:10,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:51:10,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371565588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:51:10,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:51:10,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 15:51:10,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225793694] [2023-11-17 15:51:10,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:51:10,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:51:10,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:10,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:51:10,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:51:10,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 790 [2023-11-17 15:51:10,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 577 flow. Second operand has 5 states, 5 states have (on average 330.8) internal successors, (1654), 5 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:10,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:10,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 790 [2023-11-17 15:51:10,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:11,028 INFO L124 PetriNetUnfolderBase]: 2023/2941 cut-off events. [2023-11-17 15:51:11,028 INFO L125 PetriNetUnfolderBase]: For 10935/10935 co-relation queries the response was YES. [2023-11-17 15:51:11,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12167 conditions, 2941 events. 2023/2941 cut-off events. For 10935/10935 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 12675 event pairs, 847 based on Foata normal form. 18/2759 useless extension candidates. Maximal degree in co-relation 12053. Up to 2087 conditions per place. [2023-11-17 15:51:11,053 INFO L140 encePairwiseOnDemand]: 784/790 looper letters, 76 selfloop transitions, 15 changer transitions 10/101 dead transitions. [2023-11-17 15:51:11,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 101 transitions, 881 flow [2023-11-17 15:51:11,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:51:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:51:11,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1689 transitions. [2023-11-17 15:51:11,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275949367088608 [2023-11-17 15:51:11,057 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1689 transitions. [2023-11-17 15:51:11,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1689 transitions. [2023-11-17 15:51:11,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:11,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1689 transitions. [2023-11-17 15:51:11,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 337.8) internal successors, (1689), 5 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:11,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:11,065 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:11,065 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 577 flow. Second operand 5 states and 1689 transitions. [2023-11-17 15:51:11,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 101 transitions, 881 flow [2023-11-17 15:51:11,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 101 transitions, 859 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 15:51:11,095 INFO L231 Difference]: Finished difference. Result has 86 places, 70 transitions, 573 flow [2023-11-17 15:51:11,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=573, PETRI_PLACES=86, PETRI_TRANSITIONS=70} [2023-11-17 15:51:11,095 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 52 predicate places. [2023-11-17 15:51:11,095 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 70 transitions, 573 flow [2023-11-17 15:51:11,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.8) internal successors, (1654), 5 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:11,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:11,096 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:11,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-17 15:51:11,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-17 15:51:11,305 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:51:11,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:11,306 INFO L85 PathProgramCache]: Analyzing trace with hash -121486312, now seen corresponding path program 1 times [2023-11-17 15:51:11,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:11,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288939867] [2023-11-17 15:51:11,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:11,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-17 15:51:11,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:11,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288939867] [2023-11-17 15:51:11,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288939867] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:11,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435539733] [2023-11-17 15:51:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:11,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:11,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:51:11,522 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 15:51:11,540 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 15:51:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:11,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-17 15:51:11,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:51:12,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:51:12,053 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 15:51:12,388 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:51:12,389 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 40 treesize of output 40 [2023-11-17 15:51:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 15:51:12,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:51:14,704 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse17 (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~o_2~0.offset))) (and (or (< |c_thread1Thread1of1ForFork1_~i~0#1| 4) (and (forall ((v_ArrVal_1615 (Array Int Int)) (~o_4~0.base Int) (~o_2~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1615))) (let ((.cse0 (select (select .cse2 c_~o_0~0.base) c_~o_0~0.offset)) (.cse1 (select (select .cse2 ~o_4~0.base) c_~o_4~0.offset))) (or (= .cse0 .cse1) (< .cse1 (select (select .cse2 ~o_2~0.base) c_~o_2~0.offset)) (< .cse0 .cse1))))) (forall ((v_ArrVal_1615 (Array Int Int)) (~o_4~0.base Int) (~o_2~0.base Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1615))) (let ((.cse4 (select (select .cse5 ~o_2~0.base) c_~o_2~0.offset)) (.cse3 (select (select .cse5 ~o_4~0.base) c_~o_4~0.offset))) (or (= .cse3 .cse4) (< .cse3 .cse4) (< (select (select .cse5 c_~o_0~0.base) c_~o_0~0.offset) .cse3))))) (forall ((v_ArrVal_1615 (Array Int Int)) (~o_4~0.base Int) (~o_2~0.base Int)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1615))) (let ((.cse7 (select (select .cse6 ~o_4~0.base) c_~o_4~0.offset)) (.cse8 (select (select .cse6 c_~o_0~0.base) c_~o_0~0.offset))) (or (< (select (select .cse6 ~o_2~0.base) c_~o_2~0.offset) .cse7) (= .cse8 .cse7) (< .cse7 .cse8))))) (forall ((v_ArrVal_1615 (Array Int Int)) (~o_4~0.base Int) (~o_2~0.base Int)) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1615))) (let ((.cse10 (select (select .cse9 ~o_4~0.base) c_~o_4~0.offset))) (or (= (select (select .cse9 c_~o_0~0.base) c_~o_0~0.offset) .cse10) (not (= .cse10 (select (select .cse9 ~o_2~0.base) c_~o_2~0.offset))))))) (forall ((v_ArrVal_1615 (Array Int Int)) (~o_4~0.base Int) (~o_2~0.base Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1615))) (let ((.cse11 (select (select .cse13 ~o_2~0.base) c_~o_2~0.offset)) (.cse12 (select (select .cse13 ~o_4~0.base) c_~o_4~0.offset))) (or (< .cse11 .cse12) (= .cse12 .cse11) (< .cse12 (select (select .cse13 c_~o_0~0.base) c_~o_0~0.offset)))))) (forall ((v_ArrVal_1615 (Array Int Int)) (~o_4~0.base Int) (~o_2~0.base Int)) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1615))) (let ((.cse15 (select (select .cse14 ~o_4~0.base) c_~o_4~0.offset))) (or (not (= (select (select .cse14 c_~o_0~0.base) c_~o_0~0.offset) .cse15)) (= .cse15 (select (select .cse14 ~o_2~0.base) c_~o_2~0.offset)))))))) (forall ((v_ArrVal_1615 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse20 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1615))) (let ((.cse16 (select .cse20 ~o_2~0.base))) (or (not (= |c_thread1Thread1of1ForFork1_#t~mem1#1| (select .cse16 .cse17))) (forall ((~o_4~0.base Int)) (let ((.cse19 (select .cse16 c_~o_2~0.offset)) (.cse18 (select (select .cse20 ~o_4~0.base) c_~o_4~0.offset))) (or (= .cse18 .cse19) (< .cse18 .cse19) (< (select (select .cse20 c_~o_0~0.base) c_~o_0~0.offset) .cse18)))))))) (forall ((v_ArrVal_1615 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse24 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1615))) (let ((.cse21 (select .cse24 ~o_2~0.base))) (or (not (= |c_thread1Thread1of1ForFork1_#t~mem1#1| (select .cse21 .cse17))) (forall ((~o_4~0.base Int)) (let ((.cse22 (select (select .cse24 c_~o_0~0.base) c_~o_0~0.offset)) (.cse23 (select (select .cse24 ~o_4~0.base) c_~o_4~0.offset))) (or (= .cse22 .cse23) (< .cse23 (select .cse21 c_~o_2~0.offset)) (< .cse22 .cse23)))))))) (forall ((v_ArrVal_1615 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse28 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1615))) (let ((.cse25 (select .cse28 ~o_2~0.base))) (or (not (= |c_thread1Thread1of1ForFork1_#t~mem1#1| (select .cse25 .cse17))) (forall ((~o_4~0.base Int)) (let ((.cse26 (select .cse25 c_~o_2~0.offset)) (.cse27 (select (select .cse28 ~o_4~0.base) c_~o_4~0.offset))) (or (< .cse26 .cse27) (= .cse27 .cse26) (< .cse27 (select (select .cse28 c_~o_0~0.base) c_~o_0~0.offset))))))))) (forall ((v_ArrVal_1615 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse32 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1615))) (let ((.cse29 (select .cse32 ~o_2~0.base))) (or (not (= |c_thread1Thread1of1ForFork1_#t~mem1#1| (select .cse29 .cse17))) (forall ((~o_4~0.base Int)) (let ((.cse30 (select (select .cse32 ~o_4~0.base) c_~o_4~0.offset)) (.cse31 (select (select .cse32 c_~o_0~0.base) c_~o_0~0.offset))) (or (< (select .cse29 c_~o_2~0.offset) .cse30) (= .cse31 .cse30) (< .cse30 .cse31)))))))) (forall ((v_ArrVal_1615 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse34 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1615))) (let ((.cse33 (select .cse34 ~o_2~0.base))) (or (not (= |c_thread1Thread1of1ForFork1_#t~mem1#1| (select .cse33 .cse17))) (forall ((~o_4~0.base Int)) (let ((.cse35 (select (select .cse34 ~o_4~0.base) c_~o_4~0.offset))) (or (= (select (select .cse34 c_~o_0~0.base) c_~o_0~0.offset) .cse35) (not (= .cse35 (select .cse33 c_~o_2~0.offset)))))))))) (forall ((v_ArrVal_1615 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse37 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1615))) (let ((.cse36 (select .cse37 ~o_2~0.base))) (or (not (= |c_thread1Thread1of1ForFork1_#t~mem1#1| (select .cse36 .cse17))) (forall ((~o_4~0.base Int)) (let ((.cse38 (select (select .cse37 ~o_4~0.base) c_~o_4~0.offset))) (or (not (= (select (select .cse37 c_~o_0~0.base) c_~o_0~0.offset) .cse38)) (= .cse38 (select .cse36 c_~o_2~0.offset))))))))))) is different from false [2023-11-17 15:51:14,880 INFO L349 Elim1Store]: treesize reduction 19, result has 84.3 percent of original size [2023-11-17 15:51:14,881 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 184 treesize of output 229 [2023-11-17 15:51:14,927 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:51:14,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 128 treesize of output 162 [2023-11-17 15:51:19,214 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 15:51:19,218 INFO L349 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-11-17 15:51:19,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 192 treesize of output 1 [2023-11-17 15:51:19,223 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 15:51:19,227 INFO L349 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-11-17 15:51:19,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 1 [2023-11-17 15:51:19,231 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 15:51:19,235 INFO L349 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-11-17 15:51:19,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 130 treesize of output 1 [2023-11-17 15:51:19,238 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 15:51:19,243 INFO L349 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-11-17 15:51:19,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 192 treesize of output 1 [2023-11-17 15:51:19,246 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 15:51:19,251 INFO L349 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-11-17 15:51:19,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 1 [2023-11-17 15:51:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 15:51:19,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435539733] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:51:19,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:51:19,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 16, 14] total 34 [2023-11-17 15:51:19,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421402532] [2023-11-17 15:51:19,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:51:19,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-17 15:51:19,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:19,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-17 15:51:19,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1005, Unknown=1, NotChecked=64, Total=1190 [2023-11-17 15:51:19,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 790 [2023-11-17 15:51:19,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 70 transitions, 573 flow. Second operand has 35 states, 35 states have (on average 267.57142857142856) internal successors, (9365), 35 states have internal predecessors, (9365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:19,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:19,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 790 [2023-11-17 15:51:19,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:23,361 INFO L124 PetriNetUnfolderBase]: 3918/5639 cut-off events. [2023-11-17 15:51:23,361 INFO L125 PetriNetUnfolderBase]: For 25606/25606 co-relation queries the response was YES. [2023-11-17 15:51:23,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23438 conditions, 5639 events. 3918/5639 cut-off events. For 25606/25606 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 27834 event pairs, 749 based on Foata normal form. 2/5273 useless extension candidates. Maximal degree in co-relation 23323. Up to 1655 conditions per place. [2023-11-17 15:51:23,402 INFO L140 encePairwiseOnDemand]: 773/790 looper letters, 218 selfloop transitions, 56 changer transitions 114/388 dead transitions. [2023-11-17 15:51:23,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 388 transitions, 4182 flow [2023-11-17 15:51:23,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 15:51:23,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 15:51:23,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 6296 transitions. [2023-11-17 15:51:23,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346505228398459 [2023-11-17 15:51:23,414 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 6296 transitions. [2023-11-17 15:51:23,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 6296 transitions. [2023-11-17 15:51:23,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:23,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 6296 transitions. [2023-11-17 15:51:23,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 273.7391304347826) internal successors, (6296), 23 states have internal predecessors, (6296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:23,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 790.0) internal successors, (18960), 24 states have internal predecessors, (18960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:23,444 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 790.0) internal successors, (18960), 24 states have internal predecessors, (18960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:23,445 INFO L175 Difference]: Start difference. First operand has 86 places, 70 transitions, 573 flow. Second operand 23 states and 6296 transitions. [2023-11-17 15:51:23,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 388 transitions, 4182 flow [2023-11-17 15:51:23,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 388 transitions, 3752 flow, removed 13 selfloop flow, removed 8 redundant places. [2023-11-17 15:51:23,493 INFO L231 Difference]: Finished difference. Result has 116 places, 121 transitions, 1299 flow [2023-11-17 15:51:23,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1299, PETRI_PLACES=116, PETRI_TRANSITIONS=121} [2023-11-17 15:51:23,493 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 82 predicate places. [2023-11-17 15:51:23,493 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 121 transitions, 1299 flow [2023-11-17 15:51:23,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 267.57142857142856) internal successors, (9365), 35 states have internal predecessors, (9365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:23,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:23,495 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:23,507 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 15:51:23,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:23,702 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:51:23,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:23,702 INFO L85 PathProgramCache]: Analyzing trace with hash 2034445183, now seen corresponding path program 2 times [2023-11-17 15:51:23,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:23,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033042947] [2023-11-17 15:51:23,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:23,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 15:51:23,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:23,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033042947] [2023-11-17 15:51:23,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033042947] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:23,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019737482] [2023-11-17 15:51:23,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:51:23,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:23,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:51:23,930 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 15:51:23,954 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 15:51:24,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:51:24,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:51:24,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-17 15:51:24,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:51:24,823 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:51:24,823 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 38 treesize of output 38 [2023-11-17 15:51:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 15:51:25,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:51:25,679 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:51:25,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2023-11-17 15:51:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 15:51:25,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019737482] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:51:25,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:51:25,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 17, 11] total 31 [2023-11-17 15:51:25,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925108388] [2023-11-17 15:51:25,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:51:25,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-17 15:51:25,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:25,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-17 15:51:25,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2023-11-17 15:51:25,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 790 [2023-11-17 15:51:25,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 121 transitions, 1299 flow. Second operand has 32 states, 32 states have (on average 270.6875) internal successors, (8662), 32 states have internal predecessors, (8662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:25,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:25,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 790 [2023-11-17 15:51:25,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:30,058 INFO L124 PetriNetUnfolderBase]: 8253/11779 cut-off events. [2023-11-17 15:51:30,059 INFO L125 PetriNetUnfolderBase]: For 116352/116352 co-relation queries the response was YES. [2023-11-17 15:51:30,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68514 conditions, 11779 events. 8253/11779 cut-off events. For 116352/116352 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 60670 event pairs, 661 based on Foata normal form. 5/11784 useless extension candidates. Maximal degree in co-relation 68464. Up to 2871 conditions per place. [2023-11-17 15:51:30,148 INFO L140 encePairwiseOnDemand]: 773/790 looper letters, 351 selfloop transitions, 271 changer transitions 215/837 dead transitions. [2023-11-17 15:51:30,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 837 transitions, 11658 flow [2023-11-17 15:51:30,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-17 15:51:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-11-17 15:51:30,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 10563 transitions. [2023-11-17 15:51:30,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35186542305129914 [2023-11-17 15:51:30,161 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 10563 transitions. [2023-11-17 15:51:30,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 10563 transitions. [2023-11-17 15:51:30,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:30,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 10563 transitions. [2023-11-17 15:51:30,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 277.9736842105263) internal successors, (10563), 38 states have internal predecessors, (10563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:30,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 790.0) internal successors, (30810), 39 states have internal predecessors, (30810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:30,204 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 790.0) internal successors, (30810), 39 states have internal predecessors, (30810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:30,204 INFO L175 Difference]: Start difference. First operand has 116 places, 121 transitions, 1299 flow. Second operand 38 states and 10563 transitions. [2023-11-17 15:51:30,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 837 transitions, 11658 flow [2023-11-17 15:51:30,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 837 transitions, 10538 flow, removed 552 selfloop flow, removed 9 redundant places. [2023-11-17 15:51:30,603 INFO L231 Difference]: Finished difference. Result has 168 places, 393 transitions, 6055 flow [2023-11-17 15:51:30,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6055, PETRI_PLACES=168, PETRI_TRANSITIONS=393} [2023-11-17 15:51:30,604 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 134 predicate places. [2023-11-17 15:51:30,604 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 393 transitions, 6055 flow [2023-11-17 15:51:30,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 270.6875) internal successors, (8662), 32 states have internal predecessors, (8662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:30,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:30,606 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:30,613 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 15:51:30,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:30,807 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:51:30,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:30,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1121271618, now seen corresponding path program 3 times [2023-11-17 15:51:30,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:30,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053471279] [2023-11-17 15:51:30,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:30,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-17 15:51:32,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:32,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053471279] [2023-11-17 15:51:32,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053471279] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:32,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150152901] [2023-11-17 15:51:32,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:51:32,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:32,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:51:32,979 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 15:51:33,007 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 15:51:33,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-17 15:51:33,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:51:33,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-17 15:51:33,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:51:34,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:51:34,207 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 51 [2023-11-17 15:51:34,527 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-17 15:51:34,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:51:36,344 INFO L349 Elim1Store]: treesize reduction 19, result has 90.7 percent of original size [2023-11-17 15:51:36,345 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 81 treesize of output 202 [2023-11-17 15:51:39,526 INFO L349 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-11-17 15:51:39,526 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 57 treesize of output 1 [2023-11-17 15:51:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-17 15:51:39,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150152901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:51:39,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:51:39,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 12] total 35 [2023-11-17 15:51:39,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536455156] [2023-11-17 15:51:39,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:51:39,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-17 15:51:39,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:51:39,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-17 15:51:39,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1099, Unknown=0, NotChecked=0, Total=1260 [2023-11-17 15:51:39,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 790 [2023-11-17 15:51:39,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 393 transitions, 6055 flow. Second operand has 36 states, 36 states have (on average 274.1666666666667) internal successors, (9870), 36 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:39,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:51:39,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 790 [2023-11-17 15:51:39,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:51:46,923 INFO L124 PetriNetUnfolderBase]: 10311/14848 cut-off events. [2023-11-17 15:51:46,923 INFO L125 PetriNetUnfolderBase]: For 362127/362127 co-relation queries the response was YES. [2023-11-17 15:51:47,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121133 conditions, 14848 events. 10311/14848 cut-off events. For 362127/362127 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 79684 event pairs, 777 based on Foata normal form. 45/14893 useless extension candidates. Maximal degree in co-relation 121023. Up to 6220 conditions per place. [2023-11-17 15:51:47,064 INFO L140 encePairwiseOnDemand]: 773/790 looper letters, 349 selfloop transitions, 483 changer transitions 171/1003 dead transitions. [2023-11-17 15:51:47,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 1003 transitions, 16158 flow [2023-11-17 15:51:47,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-17 15:51:47,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-11-17 15:51:47,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 14048 transitions. [2023-11-17 15:51:47,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3556455696202532 [2023-11-17 15:51:47,080 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 14048 transitions. [2023-11-17 15:51:47,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 14048 transitions. [2023-11-17 15:51:47,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:51:47,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 14048 transitions. [2023-11-17 15:51:47,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 280.96) internal successors, (14048), 50 states have internal predecessors, (14048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:47,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 790.0) internal successors, (40290), 51 states have internal predecessors, (40290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:47,134 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 790.0) internal successors, (40290), 51 states have internal predecessors, (40290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:47,134 INFO L175 Difference]: Start difference. First operand has 168 places, 393 transitions, 6055 flow. Second operand 50 states and 14048 transitions. [2023-11-17 15:51:47,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 1003 transitions, 16158 flow [2023-11-17 15:51:48,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 1003 transitions, 14700 flow, removed 706 selfloop flow, removed 16 redundant places. [2023-11-17 15:51:48,326 INFO L231 Difference]: Finished difference. Result has 221 places, 643 transitions, 11133 flow [2023-11-17 15:51:48,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=5391, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=11133, PETRI_PLACES=221, PETRI_TRANSITIONS=643} [2023-11-17 15:51:48,327 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 187 predicate places. [2023-11-17 15:51:48,327 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 643 transitions, 11133 flow [2023-11-17 15:51:48,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 274.1666666666667) internal successors, (9870), 36 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:51:48,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:51:48,329 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:51:48,335 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 15:51:48,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:48,531 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:51:48,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:51:48,532 INFO L85 PathProgramCache]: Analyzing trace with hash 353272730, now seen corresponding path program 4 times [2023-11-17 15:51:48,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:51:48,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278662889] [2023-11-17 15:51:48,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:51:48,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:51:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:51:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-17 15:51:50,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:51:50,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278662889] [2023-11-17 15:51:50,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278662889] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:51:50,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222326997] [2023-11-17 15:51:50,722 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:51:50,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:51:50,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:51:50,723 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 15:51:50,726 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 15:51:51,004 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:51:51,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:51:51,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-17 15:51:51,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:51:51,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:51:51,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:51:51,443 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 15:51:51,443 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 41 treesize of output 35 [2023-11-17 15:51:51,709 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-17 15:51:51,710 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 27 treesize of output 15 [2023-11-17 15:51:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-17 15:51:51,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:51:53,034 INFO L349 Elim1Store]: treesize reduction 15, result has 91.7 percent of original size [2023-11-17 15:51:53,035 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 544 treesize of output 565 [2023-11-17 15:51:53,097 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:51:53,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 427 treesize of output 420 [2023-11-17 15:51:53,129 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:51:53,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 395 treesize of output 388 [2023-11-17 15:53:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-17 15:53:17,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222326997] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:53:17,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:53:17,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15] total 39 [2023-11-17 15:53:17,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842763560] [2023-11-17 15:53:17,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:53:17,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-17 15:53:17,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:17,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-17 15:53:17,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1494, Unknown=1, NotChecked=0, Total=1640 [2023-11-17 15:53:17,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 790 [2023-11-17 15:53:17,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 643 transitions, 11133 flow. Second operand has 41 states, 41 states have (on average 262.9756097560976) internal successors, (10782), 41 states have internal predecessors, (10782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:17,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:17,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 790 [2023-11-17 15:53:17,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:32,757 INFO L124 PetriNetUnfolderBase]: 20103/28934 cut-off events. [2023-11-17 15:53:32,757 INFO L125 PetriNetUnfolderBase]: For 880623/880623 co-relation queries the response was YES. [2023-11-17 15:53:33,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275596 conditions, 28934 events. 20103/28934 cut-off events. For 880623/880623 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 172884 event pairs, 1141 based on Foata normal form. 24/28958 useless extension candidates. Maximal degree in co-relation 275421. Up to 9476 conditions per place. [2023-11-17 15:53:33,296 INFO L140 encePairwiseOnDemand]: 771/790 looper letters, 954 selfloop transitions, 851 changer transitions 254/2059 dead transitions. [2023-11-17 15:53:33,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 2059 transitions, 41574 flow [2023-11-17 15:53:33,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-17 15:53:33,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2023-11-17 15:53:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 16695 transitions. [2023-11-17 15:53:33,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3408534095549204 [2023-11-17 15:53:33,319 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 16695 transitions. [2023-11-17 15:53:33,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 16695 transitions. [2023-11-17 15:53:33,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:33,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 16695 transitions. [2023-11-17 15:53:33,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 269.2741935483871) internal successors, (16695), 62 states have internal predecessors, (16695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:33,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 790.0) internal successors, (49770), 63 states have internal predecessors, (49770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:33,381 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 790.0) internal successors, (49770), 63 states have internal predecessors, (49770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:33,381 INFO L175 Difference]: Start difference. First operand has 221 places, 643 transitions, 11133 flow. Second operand 62 states and 16695 transitions. [2023-11-17 15:53:33,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 2059 transitions, 41574 flow [2023-11-17 15:53:38,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 2059 transitions, 38105 flow, removed 1409 selfloop flow, removed 7 redundant places. [2023-11-17 15:53:38,832 INFO L231 Difference]: Finished difference. Result has 304 places, 1169 transitions, 23146 flow [2023-11-17 15:53:38,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=9958, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=23146, PETRI_PLACES=304, PETRI_TRANSITIONS=1169} [2023-11-17 15:53:38,833 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 270 predicate places. [2023-11-17 15:53:38,833 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 1169 transitions, 23146 flow [2023-11-17 15:53:38,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 262.9756097560976) internal successors, (10782), 41 states have internal predecessors, (10782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:38,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:38,835 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:53:38,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-17 15:53:39,035 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,SelfDestructingSolverStorable21 [2023-11-17 15:53:39,035 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:53:39,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:39,036 INFO L85 PathProgramCache]: Analyzing trace with hash 344088984, now seen corresponding path program 5 times [2023-11-17 15:53:39,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:39,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488348926] [2023-11-17 15:53:39,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:39,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-17 15:53:40,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:40,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488348926] [2023-11-17 15:53:40,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488348926] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:53:40,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994466960] [2023-11-17 15:53:40,733 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:53:40,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:53:40,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:53:40,735 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 15:53:40,768 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 15:53:41,226 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-11-17 15:53:41,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:53:41,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-17 15:53:41,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:53:41,647 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-17 15:53:41,648 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 38 treesize of output 22 [2023-11-17 15:53:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-17 15:53:41,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:53:42,897 INFO L349 Elim1Store]: treesize reduction 36, result has 70.2 percent of original size [2023-11-17 15:53:42,897 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 65 treesize of output 101 [2023-11-17 15:53:42,978 INFO L349 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-11-17 15:53:42,978 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 57 treesize of output 1 [2023-11-17 15:53:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-17 15:53:43,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994466960] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:53:43,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:53:43,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 33 [2023-11-17 15:53:43,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278967025] [2023-11-17 15:53:43,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:53:43,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-17 15:53:43,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:43,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-17 15:53:43,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1001, Unknown=0, NotChecked=0, Total=1122 [2023-11-17 15:53:43,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 790 [2023-11-17 15:53:43,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 1169 transitions, 23146 flow. Second operand has 34 states, 34 states have (on average 274.3235294117647) internal successors, (9327), 34 states have internal predecessors, (9327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:43,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:43,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 790 [2023-11-17 15:53:43,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:03,145 INFO L124 PetriNetUnfolderBase]: 30161/43253 cut-off events. [2023-11-17 15:54:03,145 INFO L125 PetriNetUnfolderBase]: For 1920381/1920381 co-relation queries the response was YES. [2023-11-17 15:54:04,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476571 conditions, 43253 events. 30161/43253 cut-off events. For 1920381/1920381 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 271343 event pairs, 2641 based on Foata normal form. 22/43275 useless extension candidates. Maximal degree in co-relation 476384. Up to 15652 conditions per place. [2023-11-17 15:54:04,606 INFO L140 encePairwiseOnDemand]: 773/790 looper letters, 1161 selfloop transitions, 1607 changer transitions 40/2808 dead transitions. [2023-11-17 15:54:04,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 2808 transitions, 62807 flow [2023-11-17 15:54:04,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-17 15:54:04,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-11-17 15:54:04,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 15127 transitions. [2023-11-17 15:54:04,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3545944678856071 [2023-11-17 15:54:04,623 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 15127 transitions. [2023-11-17 15:54:04,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 15127 transitions. [2023-11-17 15:54:04,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:04,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 15127 transitions. [2023-11-17 15:54:04,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 280.1296296296296) internal successors, (15127), 54 states have internal predecessors, (15127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:04,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 790.0) internal successors, (43450), 55 states have internal predecessors, (43450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:04,687 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 790.0) internal successors, (43450), 55 states have internal predecessors, (43450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:04,687 INFO L175 Difference]: Start difference. First operand has 304 places, 1169 transitions, 23146 flow. Second operand 54 states and 15127 transitions. [2023-11-17 15:54:04,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 2808 transitions, 62807 flow [2023-11-17 15:54:16,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 2808 transitions, 59533 flow, removed 1365 selfloop flow, removed 16 redundant places. [2023-11-17 15:54:16,630 INFO L231 Difference]: Finished difference. Result has 349 places, 2224 transitions, 51463 flow [2023-11-17 15:54:16,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=21655, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=630, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=51463, PETRI_PLACES=349, PETRI_TRANSITIONS=2224} [2023-11-17 15:54:16,631 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 315 predicate places. [2023-11-17 15:54:16,632 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 2224 transitions, 51463 flow [2023-11-17 15:54:16,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 274.3235294117647) internal successors, (9327), 34 states have internal predecessors, (9327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:16,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:16,633 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:16,643 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 15:54:16,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-17 15:54:16,843 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:54:16,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:16,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1571372804, now seen corresponding path program 6 times [2023-11-17 15:54:16,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:16,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378875717] [2023-11-17 15:54:16,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:16,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-17 15:54:18,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:18,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378875717] [2023-11-17 15:54:18,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378875717] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:54:18,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144744826] [2023-11-17 15:54:18,587 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:54:18,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:18,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:54:18,589 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 15:54:18,589 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 15:54:19,001 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-11-17 15:54:19,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:54:19,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-17 15:54:19,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:54:19,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:54:19,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:54:19,431 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 15:54:19,432 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 15:54:19,761 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-17 15:54:19,761 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 38 treesize of output 22 [2023-11-17 15:54:19,849 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-17 15:54:19,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:54:21,578 INFO L349 Elim1Store]: treesize reduction 15, result has 91.7 percent of original size [2023-11-17 15:54:21,578 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 544 treesize of output 565 [2023-11-17 15:54:21,660 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:54:21,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 427 treesize of output 420 [2023-11-17 15:54:21,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:54:21,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 395 treesize of output 388 [2023-11-17 15:55:16,846 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-17 15:55:16,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144744826] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:55:16,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:55:16,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 49 [2023-11-17 15:55:16,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386612365] [2023-11-17 15:55:16,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:55:16,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-17 15:55:16,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:55:16,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-17 15:55:16,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2316, Unknown=13, NotChecked=0, Total=2550 [2023-11-17 15:55:16,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 790 [2023-11-17 15:55:16,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 2224 transitions, 51463 flow. Second operand has 51 states, 51 states have (on average 259.0) internal successors, (13209), 51 states have internal predecessors, (13209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:16,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:55:16,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 790 [2023-11-17 15:55:16,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:55:19,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:55:23,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:55:26,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:55:34,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:55:36,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]