/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 06:13:39,450 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 06:13:39,535 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-VariableLbe.epf [2023-08-24 06:13:39,539 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 06:13:39,540 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 06:13:39,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 06:13:39,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 06:13:39,571 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 06:13:39,572 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 06:13:39,575 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 06:13:39,576 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 06:13:39,576 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 06:13:39,576 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 06:13:39,578 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 06:13:39,578 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 06:13:39,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 06:13:39,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 06:13:39,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 06:13:39,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 06:13:39,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 06:13:39,580 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 06:13:39,580 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 06:13:39,580 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 06:13:39,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 06:13:39,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 06:13:39,581 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 06:13:39,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 06:13:39,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:13:39,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 06:13:39,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 06:13:39,583 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 06:13:39,583 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 06:13:39,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 06:13:39,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 06:13:39,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 06:13:39,583 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 06:13:39,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 06:13:39,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 06:13:39,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 06:13:39,891 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 06:13:39,892 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 06:13:39,893 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-08-24 06:13:41,085 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 06:13:41,391 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 06:13:41,392 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-08-24 06:13:41,418 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e10bf21/7a30e84691854495b05aeef959f7f169/FLAG814810f3b [2023-08-24 06:13:41,428 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e10bf21/7a30e84691854495b05aeef959f7f169 [2023-08-24 06:13:41,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 06:13:41,431 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 06:13:41,432 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 06:13:41,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 06:13:41,435 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 06:13:41,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:13:41" (1/1) ... [2023-08-24 06:13:41,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@727a20b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:13:41, skipping insertion in model container [2023-08-24 06:13:41,436 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:13:41" (1/1) ... [2023-08-24 06:13:41,495 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 06:13:41,665 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2023-08-24 06:13:42,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:13:42,023 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 06:13:42,034 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2023-08-24 06:13:42,049 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-24 06:13:42,050 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [246] [2023-08-24 06:13:42,068 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [1102] [2023-08-24 06:13:42,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:13:42,169 INFO L206 MainTranslator]: Completed translation [2023-08-24 06:13:42,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:13:42 WrapperNode [2023-08-24 06:13:42,170 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 06:13:42,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 06:13:42,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 06:13:42,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 06:13:42,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:13:42" (1/1) ... [2023-08-24 06:13:42,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:13:42" (1/1) ... [2023-08-24 06:13:42,231 INFO L138 Inliner]: procedures = 364, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2023-08-24 06:13:42,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 06:13:42,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 06:13:42,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 06:13:42,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 06:13:42,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:13:42" (1/1) ... [2023-08-24 06:13:42,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:13:42" (1/1) ... [2023-08-24 06:13:42,252 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:13:42" (1/1) ... [2023-08-24 06:13:42,253 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:13:42" (1/1) ... [2023-08-24 06:13:42,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:13:42" (1/1) ... [2023-08-24 06:13:42,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:13:42" (1/1) ... [2023-08-24 06:13:42,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:13:42" (1/1) ... [2023-08-24 06:13:42,269 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:13:42" (1/1) ... [2023-08-24 06:13:42,274 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 06:13:42,275 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 06:13:42,275 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 06:13:42,275 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 06:13:42,276 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:13:42" (1/1) ... [2023-08-24 06:13:42,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:13:42,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:13:42,309 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) [2023-08-24 06:13:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 06:13:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 06:13:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 06:13:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 06:13:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 06:13:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 06:13:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2023-08-24 06:13:42,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2023-08-24 06:13:42,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 06:13:42,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 06:13:42,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 06:13:42,350 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 06:13:42,332 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 [2023-08-24 06:13:42,478 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 06:13:42,480 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 06:13:42,616 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 06:13:42,622 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 06:13:42,622 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 06:13:42,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:13:42 BoogieIcfgContainer [2023-08-24 06:13:42,624 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 06:13:42,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 06:13:42,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 06:13:42,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 06:13:42,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:13:41" (1/3) ... [2023-08-24 06:13:42,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9b69f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:13:42, skipping insertion in model container [2023-08-24 06:13:42,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:13:42" (2/3) ... [2023-08-24 06:13:42,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9b69f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:13:42, skipping insertion in model container [2023-08-24 06:13:42,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:13:42" (3/3) ... [2023-08-24 06:13:42,634 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2023-08-24 06:13:42,646 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 06:13:42,646 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 06:13:42,646 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 06:13:42,696 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-24 06:13:42,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 180 flow [2023-08-24 06:13:42,766 INFO L124 PetriNetUnfolderBase]: 7/85 cut-off events. [2023-08-24 06:13:42,766 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 06:13:42,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 85 events. 7/85 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-08-24 06:13:42,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 180 flow [2023-08-24 06:13:42,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 77 transitions, 160 flow [2023-08-24 06:13:42,776 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:13:42,783 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 77 transitions, 160 flow [2023-08-24 06:13:42,786 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 77 transitions, 160 flow [2023-08-24 06:13:42,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 77 transitions, 160 flow [2023-08-24 06:13:42,804 INFO L124 PetriNetUnfolderBase]: 6/77 cut-off events. [2023-08-24 06:13:42,804 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 06:13:42,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 77 events. 6/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-08-24 06:13:42,806 INFO L119 LiptonReduction]: Number of co-enabled transitions 722 [2023-08-24 06:13:44,555 INFO L134 LiptonReduction]: Checked pairs total: 866 [2023-08-24 06:13:44,555 INFO L136 LiptonReduction]: Total number of compositions: 68 [2023-08-24 06:13:44,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 06:13:44,574 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=LoopsAndPotentialCycles, 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;@4b0e2cc0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:13:44,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 06:13:44,578 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:13:44,578 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-08-24 06:13:44,578 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 06:13:44,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:13:44,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:13:44,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:13:44,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:13:44,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1683658225, now seen corresponding path program 1 times [2023-08-24 06:13:44,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:13:44,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260837552] [2023-08-24 06:13:44,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:13:44,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:13:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:13:44,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:13:44,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:13:44,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260837552] [2023-08-24 06:13:44,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260837552] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 06:13:44,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 06:13:44,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 06:13:44,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297472813] [2023-08-24 06:13:44,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 06:13:44,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 06:13:44,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:13:44,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 06:13:44,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 06:13:44,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 154 [2023-08-24 06:13:44,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:44,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:13:44,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 154 [2023-08-24 06:13:44,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:13:44,883 INFO L124 PetriNetUnfolderBase]: 41/86 cut-off events. [2023-08-24 06:13:44,884 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 06:13:44,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 86 events. 41/86 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 205 event pairs, 15 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 162. Up to 53 conditions per place. [2023-08-24 06:13:44,886 INFO L140 encePairwiseOnDemand]: 151/154 looper letters, 20 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2023-08-24 06:13:44,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 23 transitions, 96 flow [2023-08-24 06:13:44,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 06:13:44,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 06:13:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-08-24 06:13:44,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043290043290043 [2023-08-24 06:13:44,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-08-24 06:13:44,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-08-24 06:13:44,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:13:44,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-08-24 06:13:44,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:44,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:44,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:44,916 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 36 flow. Second operand 3 states and 233 transitions. [2023-08-24 06:13:44,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 23 transitions, 96 flow [2023-08-24 06:13:44,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 23 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 06:13:44,920 INFO L231 Difference]: Finished difference. Result has 18 places, 16 transitions, 44 flow [2023-08-24 06:13:44,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=18, PETRI_TRANSITIONS=16} [2023-08-24 06:13:44,924 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2023-08-24 06:13:44,924 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 16 transitions, 44 flow [2023-08-24 06:13:44,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:44,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:13:44,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:13:44,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 06:13:44,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:13:44,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:13:44,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1559967075, now seen corresponding path program 1 times [2023-08-24 06:13:44,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:13:44,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653946044] [2023-08-24 06:13:44,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:13:44,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:13:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:13:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:13:45,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:13:45,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653946044] [2023-08-24 06:13:45,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653946044] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 06:13:45,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 06:13:45,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 06:13:45,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762160688] [2023-08-24 06:13:45,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 06:13:45,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 06:13:45,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:13:45,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 06:13:45,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 06:13:45,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 154 [2023-08-24 06:13:45,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 16 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:45,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:13:45,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 154 [2023-08-24 06:13:45,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:13:45,084 INFO L124 PetriNetUnfolderBase]: 61/143 cut-off events. [2023-08-24 06:13:45,084 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-24 06:13:45,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 143 events. 61/143 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 486 event pairs, 27 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 92. Up to 85 conditions per place. [2023-08-24 06:13:45,086 INFO L140 encePairwiseOnDemand]: 151/154 looper letters, 22 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-24 06:13:45,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 25 transitions, 120 flow [2023-08-24 06:13:45,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 06:13:45,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 06:13:45,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-08-24 06:13:45,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49783549783549785 [2023-08-24 06:13:45,099 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-08-24 06:13:45,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-08-24 06:13:45,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:13:45,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-08-24 06:13:45,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:45,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:45,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:45,102 INFO L175 Difference]: Start difference. First operand has 18 places, 16 transitions, 44 flow. Second operand 3 states and 230 transitions. [2023-08-24 06:13:45,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 25 transitions, 120 flow [2023-08-24 06:13:45,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 25 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 06:13:45,103 INFO L231 Difference]: Finished difference. Result has 20 places, 17 transitions, 54 flow [2023-08-24 06:13:45,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=20, PETRI_TRANSITIONS=17} [2023-08-24 06:13:45,104 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 3 predicate places. [2023-08-24 06:13:45,104 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 17 transitions, 54 flow [2023-08-24 06:13:45,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:45,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:13:45,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:13:45,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 06:13:45,107 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:13:45,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:13:45,110 INFO L85 PathProgramCache]: Analyzing trace with hash 517091689, now seen corresponding path program 1 times [2023-08-24 06:13:45,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:13:45,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070048803] [2023-08-24 06:13:45,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:13:45,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:13:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:13:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:13:45,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:13:45,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070048803] [2023-08-24 06:13:45,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070048803] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 06:13:45,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926462741] [2023-08-24 06:13:45,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:13:45,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 06:13:45,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:13:45,199 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) [2023-08-24 06:13:45,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 06:13:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:13:45,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-24 06:13:45,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 06:13:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:13:45,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 06:13:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:13:45,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926462741] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 06:13:45,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 06:13:45,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-24 06:13:45,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036475621] [2023-08-24 06:13:45,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 06:13:45,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 06:13:45,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:13:45,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 06:13:45,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 06:13:45,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 154 [2023-08-24 06:13:45,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 17 transitions, 54 flow. Second operand has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:45,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:13:45,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 154 [2023-08-24 06:13:45,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:13:45,505 INFO L124 PetriNetUnfolderBase]: 111/264 cut-off events. [2023-08-24 06:13:45,505 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-08-24 06:13:45,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 264 events. 111/264 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 930 event pairs, 18 based on Foata normal form. 30/294 useless extension candidates. Maximal degree in co-relation 198. Up to 55 conditions per place. [2023-08-24 06:13:45,510 INFO L140 encePairwiseOnDemand]: 150/154 looper letters, 44 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2023-08-24 06:13:45,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 51 transitions, 258 flow [2023-08-24 06:13:45,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 06:13:45,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 06:13:45,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 462 transitions. [2023-08-24 06:13:45,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-24 06:13:45,514 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 462 transitions. [2023-08-24 06:13:45,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 462 transitions. [2023-08-24 06:13:45,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:13:45,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 462 transitions. [2023-08-24 06:13:45,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:45,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:45,519 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:45,519 INFO L175 Difference]: Start difference. First operand has 20 places, 17 transitions, 54 flow. Second operand 6 states and 462 transitions. [2023-08-24 06:13:45,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 51 transitions, 258 flow [2023-08-24 06:13:45,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 51 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 06:13:45,522 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 92 flow [2023-08-24 06:13:45,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-08-24 06:13:45,523 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 11 predicate places. [2023-08-24 06:13:45,523 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 92 flow [2023-08-24 06:13:45,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:45,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:13:45,524 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:13:45,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 06:13:45,729 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 [2023-08-24 06:13:45,729 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:13:45,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:13:45,730 INFO L85 PathProgramCache]: Analyzing trace with hash 359100007, now seen corresponding path program 2 times [2023-08-24 06:13:45,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:13:45,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817671776] [2023-08-24 06:13:45,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:13:45,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:13:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:13:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-24 06:13:45,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:13:45,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817671776] [2023-08-24 06:13:45,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817671776] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 06:13:45,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724326198] [2023-08-24 06:13:45,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 06:13:45,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 06:13:45,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:13:45,861 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 06:13:45,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 06:13:45,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 06:13:45,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 06:13:45,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 06:13:45,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 06:13:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 06:13:46,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 06:13:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 06:13:46,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724326198] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 06:13:46,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 06:13:46,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2023-08-24 06:13:46,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491920578] [2023-08-24 06:13:46,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 06:13:46,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 06:13:46,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:13:46,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 06:13:46,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-08-24 06:13:46,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 154 [2023-08-24 06:13:46,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 92 flow. Second operand has 14 states, 14 states have (on average 66.21428571428571) internal successors, (927), 14 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:46,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:13:46,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 154 [2023-08-24 06:13:46,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:13:46,560 INFO L124 PetriNetUnfolderBase]: 323/748 cut-off events. [2023-08-24 06:13:46,561 INFO L125 PetriNetUnfolderBase]: For 1511/1511 co-relation queries the response was YES. [2023-08-24 06:13:46,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2276 conditions, 748 events. 323/748 cut-off events. For 1511/1511 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3110 event pairs, 10 based on Foata normal form. 107/855 useless extension candidates. Maximal degree in co-relation 588. Up to 168 conditions per place. [2023-08-24 06:13:46,565 INFO L140 encePairwiseOnDemand]: 147/154 looper letters, 158 selfloop transitions, 69 changer transitions 0/228 dead transitions. [2023-08-24 06:13:46,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 228 transitions, 1346 flow [2023-08-24 06:13:46,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-24 06:13:46,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-24 06:13:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2398 transitions. [2023-08-24 06:13:46,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4579831932773109 [2023-08-24 06:13:46,572 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2398 transitions. [2023-08-24 06:13:46,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2398 transitions. [2023-08-24 06:13:46,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:13:46,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2398 transitions. [2023-08-24 06:13:46,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 70.52941176470588) internal successors, (2398), 34 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:46,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 154.0) internal successors, (5390), 35 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:46,586 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 154.0) internal successors, (5390), 35 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:46,586 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 92 flow. Second operand 34 states and 2398 transitions. [2023-08-24 06:13:46,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 228 transitions, 1346 flow [2023-08-24 06:13:46,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 228 transitions, 1286 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-08-24 06:13:46,617 INFO L231 Difference]: Finished difference. Result has 85 places, 82 transitions, 724 flow [2023-08-24 06:13:46,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=724, PETRI_PLACES=85, PETRI_TRANSITIONS=82} [2023-08-24 06:13:46,617 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 68 predicate places. [2023-08-24 06:13:46,618 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 724 flow [2023-08-24 06:13:46,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 66.21428571428571) internal successors, (927), 14 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:46,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:13:46,618 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:13:46,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 06:13:46,819 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 [2023-08-24 06:13:46,819 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:13:46,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:13:46,820 INFO L85 PathProgramCache]: Analyzing trace with hash -519767537, now seen corresponding path program 3 times [2023-08-24 06:13:46,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:13:46,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107693879] [2023-08-24 06:13:46,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:13:46,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:13:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:13:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-08-24 06:13:46,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:13:46,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107693879] [2023-08-24 06:13:46,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107693879] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 06:13:46,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545676018] [2023-08-24 06:13:46,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 06:13:46,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 06:13:46,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:13:46,969 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) [2023-08-24 06:13:47,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 06:13:47,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 06:13:47,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 06:13:47,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-24 06:13:47,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 06:13:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-08-24 06:13:47,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 06:13:47,231 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-08-24 06:13:47,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545676018] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 06:13:47,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 06:13:47,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-08-24 06:13:47,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378453210] [2023-08-24 06:13:47,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 06:13:47,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 06:13:47,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:13:47,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 06:13:47,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-08-24 06:13:47,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 154 [2023-08-24 06:13:47,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 724 flow. Second operand has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:47,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:13:47,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 154 [2023-08-24 06:13:47,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:13:47,494 INFO L124 PetriNetUnfolderBase]: 622/1299 cut-off events. [2023-08-24 06:13:47,495 INFO L125 PetriNetUnfolderBase]: For 19768/19770 co-relation queries the response was YES. [2023-08-24 06:13:47,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6866 conditions, 1299 events. 622/1299 cut-off events. For 19768/19770 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 6285 event pairs, 78 based on Foata normal form. 94/1393 useless extension candidates. Maximal degree in co-relation 5480. Up to 324 conditions per place. [2023-08-24 06:13:47,509 INFO L140 encePairwiseOnDemand]: 150/154 looper letters, 128 selfloop transitions, 38 changer transitions 0/167 dead transitions. [2023-08-24 06:13:47,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 167 transitions, 1986 flow [2023-08-24 06:13:47,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 06:13:47,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 06:13:47,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 623 transitions. [2023-08-24 06:13:47,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056818181818182 [2023-08-24 06:13:47,511 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 623 transitions. [2023-08-24 06:13:47,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 623 transitions. [2023-08-24 06:13:47,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:13:47,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 623 transitions. [2023-08-24 06:13:47,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.875) internal successors, (623), 8 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:47,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:47,515 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:47,516 INFO L175 Difference]: Start difference. First operand has 85 places, 82 transitions, 724 flow. Second operand 8 states and 623 transitions. [2023-08-24 06:13:47,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 167 transitions, 1986 flow [2023-08-24 06:13:47,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 167 transitions, 1900 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-24 06:13:47,543 INFO L231 Difference]: Finished difference. Result has 93 places, 86 transitions, 860 flow [2023-08-24 06:13:47,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=860, PETRI_PLACES=93, PETRI_TRANSITIONS=86} [2023-08-24 06:13:47,545 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 76 predicate places. [2023-08-24 06:13:47,545 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 86 transitions, 860 flow [2023-08-24 06:13:47,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:47,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:13:47,546 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:13:47,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 06:13:47,752 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 [2023-08-24 06:13:47,752 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:13:47,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:13:47,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1170256247, now seen corresponding path program 4 times [2023-08-24 06:13:47,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:13:47,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895345915] [2023-08-24 06:13:47,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:13:47,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:13:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:13:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-08-24 06:13:48,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:13:48,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895345915] [2023-08-24 06:13:48,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895345915] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 06:13:48,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165053405] [2023-08-24 06:13:48,070 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 06:13:48,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 06:13:48,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:13:48,071 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) [2023-08-24 06:13:48,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 06:13:48,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 06:13:48,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 06:13:48,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 06:13:48,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 06:13:48,356 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-08-24 06:13:48,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 06:13:48,576 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-08-24 06:13:48,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165053405] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 06:13:48,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 06:13:48,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2023-08-24 06:13:48,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785951121] [2023-08-24 06:13:48,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 06:13:48,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-24 06:13:48,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:13:48,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-24 06:13:48,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2023-08-24 06:13:48,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 154 [2023-08-24 06:13:48,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 86 transitions, 860 flow. Second operand has 23 states, 23 states have (on average 71.65217391304348) internal successors, (1648), 23 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:48,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:13:48,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 154 [2023-08-24 06:13:48,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:13:49,214 INFO L124 PetriNetUnfolderBase]: 1162/2840 cut-off events. [2023-08-24 06:13:49,214 INFO L125 PetriNetUnfolderBase]: For 87720/87720 co-relation queries the response was YES. [2023-08-24 06:13:49,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13897 conditions, 2840 events. 1162/2840 cut-off events. For 87720/87720 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 14961 event pairs, 61 based on Foata normal form. 270/3109 useless extension candidates. Maximal degree in co-relation 11881. Up to 594 conditions per place. [2023-08-24 06:13:49,245 INFO L140 encePairwiseOnDemand]: 150/154 looper letters, 327 selfloop transitions, 66 changer transitions 0/394 dead transitions. [2023-08-24 06:13:49,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 394 transitions, 6238 flow [2023-08-24 06:13:49,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-24 06:13:49,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-24 06:13:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1701 transitions. [2023-08-24 06:13:49,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020661157024794 [2023-08-24 06:13:49,250 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1701 transitions. [2023-08-24 06:13:49,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1701 transitions. [2023-08-24 06:13:49,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:13:49,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1701 transitions. [2023-08-24 06:13:49,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 77.31818181818181) internal successors, (1701), 22 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:49,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 154.0) internal successors, (3542), 23 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:49,259 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 154.0) internal successors, (3542), 23 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:49,259 INFO L175 Difference]: Start difference. First operand has 93 places, 86 transitions, 860 flow. Second operand 22 states and 1701 transitions. [2023-08-24 06:13:49,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 394 transitions, 6238 flow [2023-08-24 06:13:49,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 394 transitions, 5274 flow, removed 420 selfloop flow, removed 2 redundant places. [2023-08-24 06:13:49,325 INFO L231 Difference]: Finished difference. Result has 123 places, 119 transitions, 1336 flow [2023-08-24 06:13:49,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1336, PETRI_PLACES=123, PETRI_TRANSITIONS=119} [2023-08-24 06:13:49,326 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 106 predicate places. [2023-08-24 06:13:49,327 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 119 transitions, 1336 flow [2023-08-24 06:13:49,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 71.65217391304348) internal successors, (1648), 23 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:49,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:13:49,328 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:13:49,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 06:13:49,549 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 [2023-08-24 06:13:49,550 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:13:49,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:13:49,550 INFO L85 PathProgramCache]: Analyzing trace with hash -837674743, now seen corresponding path program 5 times [2023-08-24 06:13:49,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:13:49,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900751198] [2023-08-24 06:13:49,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:13:49,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:13:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:13:49,793 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-08-24 06:13:49,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:13:49,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900751198] [2023-08-24 06:13:49,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900751198] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 06:13:49,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691001526] [2023-08-24 06:13:49,794 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 06:13:49,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 06:13:49,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:13:49,796 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) [2023-08-24 06:13:49,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 06:13:50,044 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-08-24 06:13:50,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 06:13:50,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 06:13:50,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 06:13:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-08-24 06:13:50,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 06:13:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-08-24 06:13:50,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691001526] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 06:13:50,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 06:13:50,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-08-24 06:13:50,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372628092] [2023-08-24 06:13:50,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 06:13:50,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 06:13:50,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:13:50,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 06:13:50,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2023-08-24 06:13:50,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 154 [2023-08-24 06:13:50,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 119 transitions, 1336 flow. Second operand has 17 states, 17 states have (on average 73.82352941176471) internal successors, (1255), 17 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:50,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:13:50,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 154 [2023-08-24 06:13:50,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:13:51,311 INFO L124 PetriNetUnfolderBase]: 2538/5271 cut-off events. [2023-08-24 06:13:51,312 INFO L125 PetriNetUnfolderBase]: For 98046/98048 co-relation queries the response was YES. [2023-08-24 06:13:51,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30779 conditions, 5271 events. 2538/5271 cut-off events. For 98046/98048 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 31846 event pairs, 198 based on Foata normal form. 346/5617 useless extension candidates. Maximal degree in co-relation 28711. Up to 1298 conditions per place. [2023-08-24 06:13:51,377 INFO L140 encePairwiseOnDemand]: 150/154 looper letters, 437 selfloop transitions, 46 changer transitions 0/484 dead transitions. [2023-08-24 06:13:51,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 484 transitions, 7162 flow [2023-08-24 06:13:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 06:13:51,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-24 06:13:51,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1251 transitions. [2023-08-24 06:13:51,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507711038961039 [2023-08-24 06:13:51,382 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1251 transitions. [2023-08-24 06:13:51,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1251 transitions. [2023-08-24 06:13:51,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:13:51,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1251 transitions. [2023-08-24 06:13:51,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.1875) internal successors, (1251), 16 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:51,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 154.0) internal successors, (2618), 17 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:51,389 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 154.0) internal successors, (2618), 17 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:51,389 INFO L175 Difference]: Start difference. First operand has 123 places, 119 transitions, 1336 flow. Second operand 16 states and 1251 transitions. [2023-08-24 06:13:51,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 484 transitions, 7162 flow [2023-08-24 06:13:51,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 484 transitions, 6892 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-24 06:13:51,510 INFO L231 Difference]: Finished difference. Result has 138 places, 128 transitions, 1588 flow [2023-08-24 06:13:51,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1588, PETRI_PLACES=138, PETRI_TRANSITIONS=128} [2023-08-24 06:13:51,511 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 121 predicate places. [2023-08-24 06:13:51,511 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 128 transitions, 1588 flow [2023-08-24 06:13:51,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 73.82352941176471) internal successors, (1255), 17 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:51,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:13:51,512 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:13:51,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 06:13:51,718 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 [2023-08-24 06:13:51,718 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:13:51,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:13:51,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1128715209, now seen corresponding path program 6 times [2023-08-24 06:13:51,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:13:51,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153178986] [2023-08-24 06:13:51,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:13:51,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:13:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:13:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 320 proven. 378 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-08-24 06:13:52,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:13:52,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153178986] [2023-08-24 06:13:52,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153178986] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 06:13:52,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120953090] [2023-08-24 06:13:52,304 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 06:13:52,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 06:13:52,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:13:52,305 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) [2023-08-24 06:13:52,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 06:13:52,714 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2023-08-24 06:13:52,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 06:13:52,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-24 06:13:52,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 06:13:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 320 proven. 378 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-08-24 06:13:52,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 06:13:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 320 proven. 378 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-08-24 06:13:53,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120953090] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 06:13:53,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 06:13:53,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-08-24 06:13:53,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708720957] [2023-08-24 06:13:53,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 06:13:53,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-24 06:13:53,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:13:53,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-24 06:13:53,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2023-08-24 06:13:53,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 154 [2023-08-24 06:13:53,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 128 transitions, 1588 flow. Second operand has 23 states, 23 states have (on average 74.21739130434783) internal successors, (1707), 23 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:53,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:13:53,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 154 [2023-08-24 06:13:53,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:13:54,859 INFO L124 PetriNetUnfolderBase]: 3570/7335 cut-off events. [2023-08-24 06:13:54,859 INFO L125 PetriNetUnfolderBase]: For 168608/168610 co-relation queries the response was YES. [2023-08-24 06:13:54,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45389 conditions, 7335 events. 3570/7335 cut-off events. For 168608/168610 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 45296 event pairs, 198 based on Foata normal form. 260/7595 useless extension candidates. Maximal degree in co-relation 42529. Up to 1826 conditions per place. [2023-08-24 06:13:54,926 INFO L140 encePairwiseOnDemand]: 150/154 looper letters, 611 selfloop transitions, 52 changer transitions 0/664 dead transitions. [2023-08-24 06:13:54,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 664 transitions, 9734 flow [2023-08-24 06:13:54,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-24 06:13:54,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-24 06:13:54,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1717 transitions. [2023-08-24 06:13:54,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067886658795749 [2023-08-24 06:13:54,933 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1717 transitions. [2023-08-24 06:13:54,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1717 transitions. [2023-08-24 06:13:54,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:13:54,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1717 transitions. [2023-08-24 06:13:54,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 78.04545454545455) internal successors, (1717), 22 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:54,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 154.0) internal successors, (3542), 23 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:54,946 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 154.0) internal successors, (3542), 23 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:54,946 INFO L175 Difference]: Start difference. First operand has 138 places, 128 transitions, 1588 flow. Second operand 22 states and 1717 transitions. [2023-08-24 06:13:54,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 664 transitions, 9734 flow [2023-08-24 06:13:55,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 664 transitions, 9674 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-24 06:13:55,095 INFO L231 Difference]: Finished difference. Result has 161 places, 135 transitions, 1826 flow [2023-08-24 06:13:55,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1826, PETRI_PLACES=161, PETRI_TRANSITIONS=135} [2023-08-24 06:13:55,097 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 144 predicate places. [2023-08-24 06:13:55,097 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 135 transitions, 1826 flow [2023-08-24 06:13:55,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 74.21739130434783) internal successors, (1707), 23 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:13:55,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:13:55,098 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:13:55,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 06:13:55,305 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 [2023-08-24 06:13:55,306 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:13:55,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:13:55,306 INFO L85 PathProgramCache]: Analyzing trace with hash 172548031, now seen corresponding path program 7 times [2023-08-24 06:13:55,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:13:55,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719627748] [2023-08-24 06:13:55,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:13:55,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:13:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:13:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:13:59,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:13:59,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719627748] [2023-08-24 06:13:59,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719627748] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 06:13:59,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423936637] [2023-08-24 06:13:59,487 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 06:13:59,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 06:13:59,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:13:59,489 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) [2023-08-24 06:13:59,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 06:13:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:13:59,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 168 conjunts are in the unsatisfiable core [2023-08-24 06:13:59,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 06:14:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:14:00,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 06:14:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:14:00,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423936637] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 06:14:00,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 06:14:00,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2023-08-24 06:14:00,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272180279] [2023-08-24 06:14:00,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 06:14:00,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-08-24 06:14:00,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:14:00,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-08-24 06:14:00,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2023-08-24 06:14:00,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 154 [2023-08-24 06:14:00,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 135 transitions, 1826 flow. Second operand has 63 states, 63 states have (on average 70.34920634920636) internal successors, (4432), 63 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:14:00,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:14:00,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 154 [2023-08-24 06:14:00,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:16:06,614 INFO L124 PetriNetUnfolderBase]: 111574/223171 cut-off events. [2023-08-24 06:16:06,615 INFO L125 PetriNetUnfolderBase]: For 8867754/8867754 co-relation queries the response was YES. [2023-08-24 06:16:09,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1694039 conditions, 223171 events. 111574/223171 cut-off events. For 8867754/8867754 co-relation queries the response was YES. Maximal size of possible extension queue 1804. Compared 2322248 event pairs, 3065 based on Foata normal form. 1/223172 useless extension candidates. Maximal degree in co-relation 1681661. Up to 48711 conditions per place. [2023-08-24 06:16:10,093 INFO L140 encePairwiseOnDemand]: 149/154 looper letters, 10810 selfloop transitions, 1382 changer transitions 1/12193 dead transitions. [2023-08-24 06:16:10,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 12193 transitions, 219805 flow [2023-08-24 06:16:10,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 493 states. [2023-08-24 06:16:10,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2023-08-24 06:16:10,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 37385 transitions. [2023-08-24 06:16:10,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49241326624693765 [2023-08-24 06:16:10,151 INFO L72 ComplementDD]: Start complementDD. Operand 493 states and 37385 transitions. [2023-08-24 06:16:10,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 493 states and 37385 transitions. [2023-08-24 06:16:10,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:16:10,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 493 states and 37385 transitions. [2023-08-24 06:16:10,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 494 states, 493 states have (on average 75.8316430020284) internal successors, (37385), 493 states have internal predecessors, (37385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:16:10,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 494 states, 494 states have (on average 154.0) internal successors, (76076), 494 states have internal predecessors, (76076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:16:10,387 INFO L81 ComplementDD]: Finished complementDD. Result has 494 states, 494 states have (on average 154.0) internal successors, (76076), 494 states have internal predecessors, (76076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:16:10,387 INFO L175 Difference]: Start difference. First operand has 161 places, 135 transitions, 1826 flow. Second operand 493 states and 37385 transitions. [2023-08-24 06:16:10,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 12193 transitions, 219805 flow [2023-08-24 06:22:04,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 12193 transitions, 211235 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-08-24 06:22:04,413 INFO L231 Difference]: Finished difference. Result has 641 places, 1576 transitions, 7546 flow [2023-08-24 06:22:04,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=493, PETRI_FLOW=7546, PETRI_PLACES=641, PETRI_TRANSITIONS=1576} [2023-08-24 06:22:04,414 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 624 predicate places. [2023-08-24 06:22:04,414 INFO L495 AbstractCegarLoop]: Abstraction has has 641 places, 1576 transitions, 7546 flow [2023-08-24 06:22:04,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 70.34920634920636) internal successors, (4432), 63 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:22:04,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:22:04,416 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:22:04,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 06:22:04,622 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 [2023-08-24 06:22:04,622 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:22:04,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:22:04,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1148916451, now seen corresponding path program 8 times [2023-08-24 06:22:04,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:22:04,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753048570] [2023-08-24 06:22:04,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:22:04,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:22:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:22:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 1330 trivial. 0 not checked. [2023-08-24 06:22:04,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:22:04,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753048570] [2023-08-24 06:22:04,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753048570] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 06:22:04,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 06:22:04,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 06:22:04,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037675326] [2023-08-24 06:22:04,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 06:22:04,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 06:22:04,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:22:04,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 06:22:04,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 06:22:04,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 154 [2023-08-24 06:22:04,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 1576 transitions, 7546 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:22:04,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:22:04,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 154 [2023-08-24 06:22:04,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:22:13,389 INFO L124 PetriNetUnfolderBase]: 10744/35635 cut-off events. [2023-08-24 06:22:13,389 INFO L125 PetriNetUnfolderBase]: For 3230285/3230285 co-relation queries the response was YES. [2023-08-24 06:22:13,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353543 conditions, 35635 events. 10744/35635 cut-off events. For 3230285/3230285 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 399269 event pairs, 506 based on Foata normal form. 10012/45647 useless extension candidates. Maximal degree in co-relation 350101. Up to 23354 conditions per place. [2023-08-24 06:22:13,934 INFO L140 encePairwiseOnDemand]: 150/154 looper letters, 537 selfloop transitions, 112 changer transitions 0/1109 dead transitions. [2023-08-24 06:22:13,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 1109 transitions, 7197 flow [2023-08-24 06:22:13,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 06:22:13,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 06:22:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-08-24 06:22:13,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47186147186147187 [2023-08-24 06:22:13,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-08-24 06:22:13,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-08-24 06:22:13,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:22:13,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-08-24 06:22:13,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:22:13,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:22:13,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:22:13,937 INFO L175 Difference]: Start difference. First operand has 641 places, 1576 transitions, 7546 flow. Second operand 3 states and 218 transitions. [2023-08-24 06:22:13,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 1109 transitions, 7197 flow [2023-08-24 06:22:38,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 1109 transitions, 7197 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 06:22:38,904 INFO L231 Difference]: Finished difference. Result has 612 places, 1094 transitions, 5842 flow [2023-08-24 06:22:38,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=5618, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1094, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=982, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=5842, PETRI_PLACES=612, PETRI_TRANSITIONS=1094} [2023-08-24 06:22:38,906 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 595 predicate places. [2023-08-24 06:22:38,906 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 1094 transitions, 5842 flow [2023-08-24 06:22:38,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:22:38,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:22:38,906 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:22:38,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 06:22:38,906 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:22:38,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:22:38,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1655298021, now seen corresponding path program 9 times [2023-08-24 06:22:38,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:22:38,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118256681] [2023-08-24 06:22:38,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:22:38,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:22:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:22:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:22:42,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:22:42,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118256681] [2023-08-24 06:22:42,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118256681] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 06:22:42,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134699231] [2023-08-24 06:22:42,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 06:22:42,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 06:22:42,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:22:42,489 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) [2023-08-24 06:22:42,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 06:22:43,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2023-08-24 06:22:43,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 06:22:43,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 168 conjunts are in the unsatisfiable core [2023-08-24 06:22:43,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 06:22:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:22:43,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 06:22:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:22:43,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134699231] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 06:22:43,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 06:22:43,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2023-08-24 06:22:43,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50494690] [2023-08-24 06:22:43,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 06:22:43,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-08-24 06:22:43,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:22:43,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-08-24 06:22:43,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2023-08-24 06:22:43,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 154 [2023-08-24 06:22:43,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 1094 transitions, 5842 flow. Second operand has 63 states, 63 states have (on average 70.34920634920636) internal successors, (4432), 63 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:22:43,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:22:43,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 154 [2023-08-24 06:22:43,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:23:54,295 INFO L124 PetriNetUnfolderBase]: 19289/62900 cut-off events. [2023-08-24 06:23:54,295 INFO L125 PetriNetUnfolderBase]: For 5719220/5719220 co-relation queries the response was YES. [2023-08-24 06:23:54,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669763 conditions, 62900 events. 19289/62900 cut-off events. For 5719220/5719220 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 757935 event pairs, 6016 based on Foata normal form. 1/62901 useless extension candidates. Maximal degree in co-relation 664409. Up to 34273 conditions per place. [2023-08-24 06:23:55,267 INFO L140 encePairwiseOnDemand]: 149/154 looper letters, 4552 selfloop transitions, 1223 changer transitions 1/5776 dead transitions. [2023-08-24 06:23:55,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1031 places, 5776 transitions, 86231 flow [2023-08-24 06:23:55,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 420 states. [2023-08-24 06:23:55,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2023-08-24 06:23:55,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 31042 transitions. [2023-08-24 06:23:55,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47993197278911565 [2023-08-24 06:23:55,296 INFO L72 ComplementDD]: Start complementDD. Operand 420 states and 31042 transitions. [2023-08-24 06:23:55,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 420 states and 31042 transitions. [2023-08-24 06:23:55,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:23:55,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 420 states and 31042 transitions. [2023-08-24 06:23:55,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 421 states, 420 states have (on average 73.9095238095238) internal successors, (31042), 420 states have internal predecessors, (31042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:23:55,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 421 states, 421 states have (on average 154.0) internal successors, (64834), 421 states have internal predecessors, (64834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:23:55,416 INFO L81 ComplementDD]: Finished complementDD. Result has 421 states, 421 states have (on average 154.0) internal successors, (64834), 421 states have internal predecessors, (64834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:23:55,417 INFO L175 Difference]: Start difference. First operand has 612 places, 1094 transitions, 5842 flow. Second operand 420 states and 31042 transitions. [2023-08-24 06:23:55,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1031 places, 5776 transitions, 86231 flow [2023-08-24 06:24:22,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1030 places, 5776 transitions, 83070 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 06:24:22,648 INFO L231 Difference]: Finished difference. Result has 1213 places, 2316 transitions, 15513 flow [2023-08-24 06:24:22,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=5730, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1094, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=420, PETRI_FLOW=15513, PETRI_PLACES=1213, PETRI_TRANSITIONS=2316} [2023-08-24 06:24:22,650 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 1196 predicate places. [2023-08-24 06:24:22,650 INFO L495 AbstractCegarLoop]: Abstraction has has 1213 places, 2316 transitions, 15513 flow [2023-08-24 06:24:22,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 70.34920634920636) internal successors, (4432), 63 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:24:22,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:24:22,651 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:24:22,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 06:24:22,857 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,SelfDestructingSolverStorable10 [2023-08-24 06:24:22,858 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:24:22,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:24:22,858 INFO L85 PathProgramCache]: Analyzing trace with hash -428446317, now seen corresponding path program 10 times [2023-08-24 06:24:22,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:24:22,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346701288] [2023-08-24 06:24:22,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:24:22,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:24:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:24:26,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:24:26,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:24:26,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346701288] [2023-08-24 06:24:26,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346701288] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 06:24:26,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893768685] [2023-08-24 06:24:26,217 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 06:24:26,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 06:24:26,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:24:26,219 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) [2023-08-24 06:24:26,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 06:24:27,716 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 06:24:27,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 06:24:27,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 168 conjunts are in the unsatisfiable core [2023-08-24 06:24:27,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 06:24:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:24:28,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 06:24:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:24:28,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893768685] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 06:24:28,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 06:24:28,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2023-08-24 06:24:28,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473224229] [2023-08-24 06:24:28,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 06:24:28,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-08-24 06:24:28,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:24:28,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-08-24 06:24:28,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2023-08-24 06:24:28,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 154 [2023-08-24 06:24:28,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1213 places, 2316 transitions, 15513 flow. Second operand has 63 states, 63 states have (on average 70.34920634920636) internal successors, (4432), 63 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:24:28,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:24:28,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 154 [2023-08-24 06:24:28,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-24 06:26:23,648 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 06:26:23,648 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 06:26:24,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-24 06:26:24,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-24 06:26:28,077 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-24 06:26:28,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 06:26:28,077 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-24 06:26:28,078 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 06:26:28,079 INFO L445 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2023-08-24 06:26:28,080 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 06:26:28,080 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 06:26:28,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 06:26:28 BasicIcfg [2023-08-24 06:26:28,083 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 06:26:28,083 INFO L158 Benchmark]: Toolchain (without parser) took 766651.92ms. Allocated memory was 362.8MB in the beginning and 11.9GB in the end (delta: 11.5GB). Free memory was 336.7MB in the beginning and 7.5GB in the end (delta: -7.1GB). Peak memory consumption was 4.9GB. Max. memory is 16.0GB. [2023-08-24 06:26:28,083 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 362.8MB. Free memory is still 339.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 06:26:28,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 737.92ms. Allocated memory is still 362.8MB. Free memory was 336.7MB in the beginning and 298.6MB in the end (delta: 38.1MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-08-24 06:26:28,084 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.75ms. Allocated memory is still 362.8MB. Free memory was 298.6MB in the beginning and 296.2MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 06:26:28,084 INFO L158 Benchmark]: Boogie Preprocessor took 41.47ms. Allocated memory is still 362.8MB. Free memory was 296.2MB in the beginning and 294.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 06:26:28,085 INFO L158 Benchmark]: RCFGBuilder took 349.40ms. Allocated memory is still 362.8MB. Free memory was 294.5MB in the beginning and 333.1MB in the end (delta: -38.6MB). Peak memory consumption was 14.1MB. Max. memory is 16.0GB. [2023-08-24 06:26:28,085 INFO L158 Benchmark]: TraceAbstraction took 765456.91ms. Allocated memory was 362.8MB in the beginning and 11.9GB in the end (delta: 11.5GB). Free memory was 333.1MB in the beginning and 7.5GB in the end (delta: -7.1GB). Peak memory consumption was 4.9GB. Max. memory is 16.0GB. [2023-08-24 06:26:28,086 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 362.8MB. Free memory is still 339.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 737.92ms. Allocated memory is still 362.8MB. Free memory was 336.7MB in the beginning and 298.6MB in the end (delta: 38.1MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.75ms. Allocated memory is still 362.8MB. Free memory was 298.6MB in the beginning and 296.2MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 41.47ms. Allocated memory is still 362.8MB. Free memory was 296.2MB in the beginning and 294.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 349.40ms. Allocated memory is still 362.8MB. Free memory was 294.5MB in the beginning and 333.1MB in the end (delta: -38.6MB). Peak memory consumption was 14.1MB. Max. memory is 16.0GB. * TraceAbstraction took 765456.91ms. Allocated memory was 362.8MB in the beginning and 11.9GB in the end (delta: 11.5GB). Free memory was 333.1MB in the beginning and 7.5GB in the end (delta: -7.1GB). Peak memory consumption was 4.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 246]: Unsoundness Warning unspecified type, defaulting to int C: short [246] - GenericResultAtLocation [Line: 1102]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [1102] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 75 PlacesBefore, 17 PlacesAfterwards, 77 TransitionsBefore, 15 TransitionsAfterwards, 722 CoEnabledTransitionPairs, 5 FixpointIterations, 33 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 5 ConcurrentYvCompositions, 4 ChoiceCompositions, 68 TotalNumberOfCompositions, 866 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 675, independent: 626, independent conditional: 0, independent unconditional: 626, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 388, independent: 377, independent conditional: 0, independent unconditional: 377, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 675, independent: 249, independent conditional: 0, independent unconditional: 249, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 388, unknown conditional: 0, unknown unconditional: 388] , Statistics on independence cache: Total cache size (in pairs): 22, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1343]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 99 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 765.4s, OverallIterations: 12, TraceHistogramMax: 20, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 741.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7633 SdHoareTripleChecker+Valid, 152.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7633 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 126.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 542 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 499349 IncrementalHoareTripleChecker+Invalid, 499891 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 542 mSolverCounterUnsat, 0 mSDtfsCounter, 499349 mSolverCounterSat, 2.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2997 GetRequests, 1558 SyntacticMatches, 25 SemanticMatches, 1414 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213929 ImplicationChecksByTransitivity, 36.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15513occurred in iteration=11, InterpolantAutomatonStates: 1030, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 16.3s InterpolantComputationTime, 1782 NumberOfCodeBlocks, 1746 NumberOfCodeBlocksAsserted, 100 NumberOfCheckSat, 2559 ConstructedInterpolants, 0 QuantifiedInterpolants, 11605 SizeOfPredicates, 120 NumberOfNonLiveVariables, 4396 ConjunctsInSsa, 553 ConjunctsInUnsatCore, 30 InterpolantComputations, 3 PerfectInterpolantSequences, 5571/19734 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown