/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 PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:13:19,681 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:13:19,758 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 11:13:19,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:13:19,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:13:19,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:13:19,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:13:19,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:13:19,796 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:13:19,799 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:13:19,800 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:13:19,800 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:13:19,800 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:13:19,802 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:13:19,802 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:13:19,802 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:13:19,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:13:19,803 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:13:19,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:13:19,803 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:13:19,803 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:13:19,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:13:19,805 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:13:19,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:13:19,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:13:19,806 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:13:19,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:13:19,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:13:19,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:13:19,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:13:19,808 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:13:19,808 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:13:19,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:13:19,808 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:13:19,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:13:19,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:13:20,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:13:20,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:13:20,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:13:20,172 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:13:20,173 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:13:20,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2023-08-24 11:13:21,374 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:13:21,668 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:13:21,669 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2023-08-24 11:13:21,683 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d1f02a48/bce3221030f2494db5a205cb9fb55623/FLAG52ca72ea5 [2023-08-24 11:13:21,695 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d1f02a48/bce3221030f2494db5a205cb9fb55623 [2023-08-24 11:13:21,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:13:21,699 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:13:21,700 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:13:21,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:13:21,702 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:13:21,703 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:13:21" (1/1) ... [2023-08-24 11:13:21,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb9c90c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:21, skipping insertion in model container [2023-08-24 11:13:21,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:13:21" (1/1) ... [2023-08-24 11:13:21,762 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:13:22,103 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/triangular-1.i[30950,30963] [2023-08-24 11:13:22,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:13:22,112 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:13:22,138 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-24 11:13:22,140 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-24 11:13:22,169 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/triangular-1.i[30950,30963] [2023-08-24 11:13:22,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:13:22,204 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:13:22,204 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:13:22,210 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:13:22,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:22 WrapperNode [2023-08-24 11:13:22,211 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:13:22,212 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:13:22,212 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:13:22,212 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:13:22,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:22" (1/1) ... [2023-08-24 11:13:22,246 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:22" (1/1) ... [2023-08-24 11:13:22,267 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-08-24 11:13:22,267 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:13:22,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:13:22,268 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:13:22,268 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:13:22,276 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:22" (1/1) ... [2023-08-24 11:13:22,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:22" (1/1) ... [2023-08-24 11:13:22,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:22" (1/1) ... [2023-08-24 11:13:22,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:22" (1/1) ... [2023-08-24 11:13:22,298 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:22" (1/1) ... [2023-08-24 11:13:22,300 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:22" (1/1) ... [2023-08-24 11:13:22,302 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:22" (1/1) ... [2023-08-24 11:13:22,303 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:22" (1/1) ... [2023-08-24 11:13:22,305 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:13:22,305 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:13:22,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:13:22,306 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:13:22,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:22" (1/1) ... [2023-08-24 11:13:22,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:13:22,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:22,352 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 11:13:22,376 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 11:13:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-24 11:13:22,398 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-24 11:13:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-24 11:13:22,398 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-24 11:13:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:13:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 11:13:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:13:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:13:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:13:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:13:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 11:13:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:13:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:13:22,401 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 11:13:22,519 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:13:22,521 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:13:22,640 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:13:22,646 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:13:22,646 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 11:13:22,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:13:22 BoogieIcfgContainer [2023-08-24 11:13:22,648 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:13:22,650 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:13:22,650 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:13:22,653 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:13:22,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:13:21" (1/3) ... [2023-08-24 11:13:22,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f093265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:13:22, skipping insertion in model container [2023-08-24 11:13:22,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:22" (2/3) ... [2023-08-24 11:13:22,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f093265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:13:22, skipping insertion in model container [2023-08-24 11:13:22,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:13:22" (3/3) ... [2023-08-24 11:13:22,655 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2023-08-24 11:13:22,671 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:13:22,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 11:13:22,672 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:13:22,720 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 11:13:22,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 68 transitions, 146 flow [2023-08-24 11:13:22,781 INFO L124 PetriNetUnfolderBase]: 5/66 cut-off events. [2023-08-24 11:13:22,781 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:13:22,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 5/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-08-24 11:13:22,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 68 transitions, 146 flow [2023-08-24 11:13:22,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 66 transitions, 138 flow [2023-08-24 11:13:22,793 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:13:22,801 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 66 transitions, 138 flow [2023-08-24 11:13:22,804 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 66 transitions, 138 flow [2023-08-24 11:13:22,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 138 flow [2023-08-24 11:13:22,822 INFO L124 PetriNetUnfolderBase]: 5/66 cut-off events. [2023-08-24 11:13:22,822 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:13:22,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 5/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-08-24 11:13:22,824 INFO L119 LiptonReduction]: Number of co-enabled transitions 1200 [2023-08-24 11:13:24,721 INFO L134 LiptonReduction]: Checked pairs total: 1095 [2023-08-24 11:13:24,721 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-24 11:13:24,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:13:24,740 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;@3ae16c5b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:13:24,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 11:13:24,744 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:13:24,744 INFO L124 PetriNetUnfolderBase]: 3/13 cut-off events. [2023-08-24 11:13:24,744 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:13:24,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:24,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 11:13:24,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:24,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:24,750 INFO L85 PathProgramCache]: Analyzing trace with hash -541533417, now seen corresponding path program 1 times [2023-08-24 11:13:24,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:24,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724635472] [2023-08-24 11:13:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:24,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:25,169 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 11:13:25,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:25,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724635472] [2023-08-24 11:13:25,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724635472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:13:25,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:13:25,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:13:25,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386627305] [2023-08-24 11:13:25,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:13:25,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:13:25,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:25,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:13:25,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:13:25,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:25,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 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 11:13:25,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:25,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:25,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:25,325 INFO L124 PetriNetUnfolderBase]: 94/152 cut-off events. [2023-08-24 11:13:25,325 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 11:13:25,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 396 event pairs, 11 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2023-08-24 11:13:25,328 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2023-08-24 11:13:25,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2023-08-24 11:13:25,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:13:25,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:13:25,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2023-08-24 11:13:25,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470703125 [2023-08-24 11:13:25,340 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 241 transitions. [2023-08-24 11:13:25,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 241 transitions. [2023-08-24 11:13:25,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:25,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 241 transitions. [2023-08-24 11:13:25,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 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 11:13:25,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 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 11:13:25,359 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 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 11:13:25,364 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 4 states and 241 transitions. [2023-08-24 11:13:25,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2023-08-24 11:13:25,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:13:25,369 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2023-08-24 11:13:25,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-24 11:13:25,374 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-08-24 11:13:25,374 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2023-08-24 11:13:25,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 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 11:13:25,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:25,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:25,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:13:25,375 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:25,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:25,376 INFO L85 PathProgramCache]: Analyzing trace with hash -722991115, now seen corresponding path program 1 times [2023-08-24 11:13:25,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:25,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290417536] [2023-08-24 11:13:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:25,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:25,470 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 11:13:25,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:25,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290417536] [2023-08-24 11:13:25,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290417536] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:13:25,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:13:25,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:13:25,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620159909] [2023-08-24 11:13:25,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:13:25,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:13:25,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:25,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:13:25,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:13:25,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:25,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 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 11:13:25,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:25,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:25,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:25,584 INFO L124 PetriNetUnfolderBase]: 126/217 cut-off events. [2023-08-24 11:13:25,585 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-08-24 11:13:25,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 658 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2023-08-24 11:13:25,587 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-08-24 11:13:25,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2023-08-24 11:13:25,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 11:13:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 11:13:25,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2023-08-24 11:13:25,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2023-08-24 11:13:25,598 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 356 transitions. [2023-08-24 11:13:25,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 356 transitions. [2023-08-24 11:13:25,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:25,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 356 transitions. [2023-08-24 11:13:25,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.333333333333336) internal successors, (356), 6 states have internal predecessors, (356), 0 states have call successors, (0), 0 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 11:13:25,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 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 11:13:25,605 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 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 11:13:25,605 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 356 transitions. [2023-08-24 11:13:25,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2023-08-24 11:13:25,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 11:13:25,606 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2023-08-24 11:13:25,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-08-24 11:13:25,607 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2023-08-24 11:13:25,607 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2023-08-24 11:13:25,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 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 11:13:25,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:25,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:25,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:13:25,608 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:25,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:25,608 INFO L85 PathProgramCache]: Analyzing trace with hash -722976235, now seen corresponding path program 2 times [2023-08-24 11:13:25,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:25,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875676832] [2023-08-24 11:13:25,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:25,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:25,687 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 11:13:25,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:25,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875676832] [2023-08-24 11:13:25,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875676832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:13:25,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:13:25,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:13:25,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074657599] [2023-08-24 11:13:25,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:13:25,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:13:25,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:25,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:13:25,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:13:25,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:25,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 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 11:13:25,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:25,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:25,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:25,800 INFO L124 PetriNetUnfolderBase]: 126/219 cut-off events. [2023-08-24 11:13:25,800 INFO L125 PetriNetUnfolderBase]: For 298/298 co-relation queries the response was YES. [2023-08-24 11:13:25,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 219 events. 126/219 cut-off events. For 298/298 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 681 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 704. Up to 87 conditions per place. [2023-08-24 11:13:25,806 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 29 selfloop transitions, 15 changer transitions 8/52 dead transitions. [2023-08-24 11:13:25,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 348 flow [2023-08-24 11:13:25,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 11:13:25,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 11:13:25,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 413 transitions. [2023-08-24 11:13:25,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2023-08-24 11:13:25,809 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 413 transitions. [2023-08-24 11:13:25,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 413 transitions. [2023-08-24 11:13:25,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:25,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 413 transitions. [2023-08-24 11:13:25,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 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 11:13:25,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 0 states have call successors, (0), 0 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 11:13:25,816 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 0 states have call successors, (0), 0 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 11:13:25,816 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 7 states and 413 transitions. [2023-08-24 11:13:25,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 348 flow [2023-08-24 11:13:25,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 344 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-24 11:13:25,821 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 240 flow [2023-08-24 11:13:25,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-08-24 11:13:25,822 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 21 predicate places. [2023-08-24 11:13:25,825 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 240 flow [2023-08-24 11:13:25,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 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 11:13:25,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:25,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:25,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:13:25,827 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:25,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:25,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1288779972, now seen corresponding path program 1 times [2023-08-24 11:13:25,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:25,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296621246] [2023-08-24 11:13:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:25,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:25,935 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 11:13:25,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:25,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296621246] [2023-08-24 11:13:25,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296621246] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:13:25,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:13:25,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:13:25,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124622917] [2023-08-24 11:13:25,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:13:25,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 11:13:25,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:25,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 11:13:25,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 11:13:25,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:25,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 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 11:13:25,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:25,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:25,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:26,067 INFO L124 PetriNetUnfolderBase]: 162/283 cut-off events. [2023-08-24 11:13:26,067 INFO L125 PetriNetUnfolderBase]: For 777/777 co-relation queries the response was YES. [2023-08-24 11:13:26,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 283 events. 162/283 cut-off events. For 777/777 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 942 event pairs, 20 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1058. Up to 71 conditions per place. [2023-08-24 11:13:26,070 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 37 selfloop transitions, 21 changer transitions 3/61 dead transitions. [2023-08-24 11:13:26,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 488 flow [2023-08-24 11:13:26,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 11:13:26,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 11:13:26,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 470 transitions. [2023-08-24 11:13:26,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458984375 [2023-08-24 11:13:26,074 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 470 transitions. [2023-08-24 11:13:26,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 470 transitions. [2023-08-24 11:13:26,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:26,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 470 transitions. [2023-08-24 11:13:26,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.75) internal successors, (470), 8 states have internal predecessors, (470), 0 states have call successors, (0), 0 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 11:13:26,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 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 11:13:26,078 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 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 11:13:26,078 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 240 flow. Second operand 8 states and 470 transitions. [2023-08-24 11:13:26,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 488 flow [2023-08-24 11:13:26,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 61 transitions, 467 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-24 11:13:26,087 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 346 flow [2023-08-24 11:13:26,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=346, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2023-08-24 11:13:26,088 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 31 predicate places. [2023-08-24 11:13:26,089 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 346 flow [2023-08-24 11:13:26,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 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 11:13:26,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:26,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:26,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:13:26,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:26,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:26,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1319181672, now seen corresponding path program 2 times [2023-08-24 11:13:26,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:26,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713306658] [2023-08-24 11:13:26,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:26,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:26,229 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 11:13:26,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:26,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713306658] [2023-08-24 11:13:26,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713306658] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:13:26,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:13:26,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:13:26,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918440952] [2023-08-24 11:13:26,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:13:26,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 11:13:26,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:26,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 11:13:26,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-24 11:13:26,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:26,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 346 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 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 11:13:26,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:26,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:26,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:26,367 INFO L124 PetriNetUnfolderBase]: 154/271 cut-off events. [2023-08-24 11:13:26,368 INFO L125 PetriNetUnfolderBase]: For 1323/1323 co-relation queries the response was YES. [2023-08-24 11:13:26,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 271 events. 154/271 cut-off events. For 1323/1323 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 923 event pairs, 22 based on Foata normal form. 8/279 useless extension candidates. Maximal degree in co-relation 1179. Up to 67 conditions per place. [2023-08-24 11:13:26,370 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 30 selfloop transitions, 21 changer transitions 8/59 dead transitions. [2023-08-24 11:13:26,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 576 flow [2023-08-24 11:13:26,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 11:13:26,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 11:13:26,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 411 transitions. [2023-08-24 11:13:26,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45870535714285715 [2023-08-24 11:13:26,372 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 411 transitions. [2023-08-24 11:13:26,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 411 transitions. [2023-08-24 11:13:26,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:26,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 411 transitions. [2023-08-24 11:13:26,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 58.714285714285715) internal successors, (411), 7 states have internal predecessors, (411), 0 states have call successors, (0), 0 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 11:13:26,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 0 states have call successors, (0), 0 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 11:13:26,375 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 0 states have call successors, (0), 0 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 11:13:26,375 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 346 flow. Second operand 7 states and 411 transitions. [2023-08-24 11:13:26,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 576 flow [2023-08-24 11:13:26,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 537 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-24 11:13:26,381 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 398 flow [2023-08-24 11:13:26,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2023-08-24 11:13:26,382 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 35 predicate places. [2023-08-24 11:13:26,382 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 398 flow [2023-08-24 11:13:26,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 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 11:13:26,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:26,383 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:26,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 11:13:26,383 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:26,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:26,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2055022021, now seen corresponding path program 3 times [2023-08-24 11:13:26,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:26,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386533274] [2023-08-24 11:13:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:26,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:26,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:26,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386533274] [2023-08-24 11:13:26,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386533274] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:26,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598529712] [2023-08-24 11:13:26,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 11:13:26,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:26,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:26,489 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 11:13:26,521 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 11:13:26,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 11:13:26,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 11:13:26,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 11:13:26,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:26,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:26,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:13:26,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:26,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598529712] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:13:26,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:13:26,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-24 11:13:26,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627948635] [2023-08-24 11:13:26,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:13:26,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 11:13:26,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:26,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 11:13:26,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-24 11:13:26,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:26,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 398 flow. Second operand has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 0 states have call successors, (0), 0 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 11:13:26,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:26,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:26,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:27,070 INFO L124 PetriNetUnfolderBase]: 202/351 cut-off events. [2023-08-24 11:13:27,071 INFO L125 PetriNetUnfolderBase]: For 2187/2187 co-relation queries the response was YES. [2023-08-24 11:13:27,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 351 events. 202/351 cut-off events. For 2187/2187 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1213 event pairs, 10 based on Foata normal form. 16/367 useless extension candidates. Maximal degree in co-relation 1647. Up to 87 conditions per place. [2023-08-24 11:13:27,074 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 36 selfloop transitions, 38 changer transitions 26/100 dead transitions. [2023-08-24 11:13:27,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 100 transitions, 992 flow [2023-08-24 11:13:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 11:13:27,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-24 11:13:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 935 transitions. [2023-08-24 11:13:27,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45654296875 [2023-08-24 11:13:27,077 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 935 transitions. [2023-08-24 11:13:27,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 935 transitions. [2023-08-24 11:13:27,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:27,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 935 transitions. [2023-08-24 11:13:27,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 58.4375) internal successors, (935), 16 states have internal predecessors, (935), 0 states have call successors, (0), 0 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 11:13:27,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 128.0) internal successors, (2176), 17 states have internal predecessors, (2176), 0 states have call successors, (0), 0 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 11:13:27,083 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 128.0) internal successors, (2176), 17 states have internal predecessors, (2176), 0 states have call successors, (0), 0 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 11:13:27,083 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 398 flow. Second operand 16 states and 935 transitions. [2023-08-24 11:13:27,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 100 transitions, 992 flow [2023-08-24 11:13:27,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 927 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-08-24 11:13:27,091 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 705 flow [2023-08-24 11:13:27,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=705, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-08-24 11:13:27,092 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 49 predicate places. [2023-08-24 11:13:27,092 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 705 flow [2023-08-24 11:13:27,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 0 states have call successors, (0), 0 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 11:13:27,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:27,093 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:27,107 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 11:13:27,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-24 11:13:27,299 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:27,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:27,299 INFO L85 PathProgramCache]: Analyzing trace with hash -728579416, now seen corresponding path program 4 times [2023-08-24 11:13:27,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:27,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031589859] [2023-08-24 11:13:27,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:27,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:27,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 11:13:27,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:27,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031589859] [2023-08-24 11:13:27,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031589859] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:27,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315956354] [2023-08-24 11:13:27,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 11:13:27,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:27,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:27,427 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 11:13:27,437 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 11:13:27,499 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 11:13:27,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 11:13:27,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 11:13:27,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 11:13:27,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:13:27,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 11:13:27,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315956354] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:13:27,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:13:27,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-24 11:13:27,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473780827] [2023-08-24 11:13:27,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:13:27,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 11:13:27,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:27,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 11:13:27,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-08-24 11:13:27,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:27,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 705 flow. Second operand has 16 states, 16 states have (on average 54.8125) internal successors, (877), 16 states have internal predecessors, (877), 0 states have call successors, (0), 0 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 11:13:27,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:27,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:27,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:27,956 INFO L124 PetriNetUnfolderBase]: 258/463 cut-off events. [2023-08-24 11:13:27,956 INFO L125 PetriNetUnfolderBase]: For 4314/4314 co-relation queries the response was YES. [2023-08-24 11:13:27,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 463 events. 258/463 cut-off events. For 4314/4314 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1669 event pairs, 55 based on Foata normal form. 32/495 useless extension candidates. Maximal degree in co-relation 2419. Up to 237 conditions per place. [2023-08-24 11:13:27,959 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 64 selfloop transitions, 27 changer transitions 27/118 dead transitions. [2023-08-24 11:13:27,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 1473 flow [2023-08-24 11:13:27,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 11:13:27,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-24 11:13:27,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 931 transitions. [2023-08-24 11:13:27,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45458984375 [2023-08-24 11:13:27,963 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 931 transitions. [2023-08-24 11:13:27,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 931 transitions. [2023-08-24 11:13:27,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:27,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 931 transitions. [2023-08-24 11:13:27,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 58.1875) internal successors, (931), 16 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:27,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 128.0) internal successors, (2176), 17 states have internal predecessors, (2176), 0 states have call successors, (0), 0 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 11:13:27,970 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 128.0) internal successors, (2176), 17 states have internal predecessors, (2176), 0 states have call successors, (0), 0 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 11:13:27,970 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 705 flow. Second operand 16 states and 931 transitions. [2023-08-24 11:13:27,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 1473 flow [2023-08-24 11:13:27,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 118 transitions, 1098 flow, removed 170 selfloop flow, removed 7 redundant places. [2023-08-24 11:13:27,983 INFO L231 Difference]: Finished difference. Result has 85 places, 70 transitions, 769 flow [2023-08-24 11:13:27,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=769, PETRI_PLACES=85, PETRI_TRANSITIONS=70} [2023-08-24 11:13:27,984 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 67 predicate places. [2023-08-24 11:13:27,984 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 70 transitions, 769 flow [2023-08-24 11:13:27,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.8125) internal successors, (877), 16 states have internal predecessors, (877), 0 states have call successors, (0), 0 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 11:13:27,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:27,987 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:27,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-24 11:13:28,192 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,SelfDestructingSolverStorable6 [2023-08-24 11:13:28,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:28,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:28,193 INFO L85 PathProgramCache]: Analyzing trace with hash 71425160, now seen corresponding path program 5 times [2023-08-24 11:13:28,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:28,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730515359] [2023-08-24 11:13:28,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:28,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:28,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 11:13:28,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:28,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730515359] [2023-08-24 11:13:28,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730515359] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:28,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128295075] [2023-08-24 11:13:28,366 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 11:13:28,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:28,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:28,367 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 11:13:28,392 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 11:13:28,438 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-24 11:13:28,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 11:13:28,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 11:13:28,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:28,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 11:13:28,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:13:28,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 11:13:28,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128295075] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:13:28,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:13:28,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-24 11:13:28,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701435048] [2023-08-24 11:13:28,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:13:28,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 11:13:28,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:28,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 11:13:28,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-08-24 11:13:28,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:28,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 70 transitions, 769 flow. Second operand has 17 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 0 states have call successors, (0), 0 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 11:13:28,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:28,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:28,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:29,119 INFO L124 PetriNetUnfolderBase]: 412/755 cut-off events. [2023-08-24 11:13:29,119 INFO L125 PetriNetUnfolderBase]: For 12083/12083 co-relation queries the response was YES. [2023-08-24 11:13:29,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 755 events. 412/755 cut-off events. For 12083/12083 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3326 event pairs, 42 based on Foata normal form. 32/787 useless extension candidates. Maximal degree in co-relation 3958. Up to 227 conditions per place. [2023-08-24 11:13:29,125 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 73 selfloop transitions, 72 changer transitions 37/182 dead transitions. [2023-08-24 11:13:29,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 182 transitions, 2087 flow [2023-08-24 11:13:29,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-24 11:13:29,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-24 11:13:29,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1280 transitions. [2023-08-24 11:13:29,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-08-24 11:13:29,130 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1280 transitions. [2023-08-24 11:13:29,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1280 transitions. [2023-08-24 11:13:29,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:29,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1280 transitions. [2023-08-24 11:13:29,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.18181818181818) internal successors, (1280), 22 states have internal predecessors, (1280), 0 states have call successors, (0), 0 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 11:13:29,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 128.0) internal successors, (2944), 23 states have internal predecessors, (2944), 0 states have call successors, (0), 0 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 11:13:29,141 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 128.0) internal successors, (2944), 23 states have internal predecessors, (2944), 0 states have call successors, (0), 0 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 11:13:29,141 INFO L175 Difference]: Start difference. First operand has 85 places, 70 transitions, 769 flow. Second operand 22 states and 1280 transitions. [2023-08-24 11:13:29,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 182 transitions, 2087 flow [2023-08-24 11:13:29,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 182 transitions, 1966 flow, removed 51 selfloop flow, removed 4 redundant places. [2023-08-24 11:13:29,174 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 1476 flow [2023-08-24 11:13:29,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1476, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2023-08-24 11:13:29,177 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 98 predicate places. [2023-08-24 11:13:29,179 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 1476 flow [2023-08-24 11:13:29,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 0 states have call successors, (0), 0 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 11:13:29,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:29,180 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:29,191 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 11:13:29,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:29,386 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:29,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:29,387 INFO L85 PathProgramCache]: Analyzing trace with hash 527212936, now seen corresponding path program 6 times [2023-08-24 11:13:29,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:29,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695619759] [2023-08-24 11:13:29,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:29,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 11:13:29,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:29,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695619759] [2023-08-24 11:13:29,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695619759] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:29,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602429493] [2023-08-24 11:13:29,501 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 11:13:29,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:29,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:29,502 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 11:13:29,504 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 11:13:29,572 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-24 11:13:29,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 11:13:29,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 11:13:29,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:29,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 11:13:29,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:13:29,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 11:13:29,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602429493] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:13:29,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:13:29,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-24 11:13:29,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138509359] [2023-08-24 11:13:29,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:13:29,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 11:13:29,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:29,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 11:13:29,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-08-24 11:13:29,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:29,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 1476 flow. Second operand has 16 states, 16 states have (on average 54.8125) internal successors, (877), 16 states have internal predecessors, (877), 0 states have call successors, (0), 0 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 11:13:29,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:29,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:29,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:30,297 INFO L124 PetriNetUnfolderBase]: 612/1111 cut-off events. [2023-08-24 11:13:30,297 INFO L125 PetriNetUnfolderBase]: For 35880/35880 co-relation queries the response was YES. [2023-08-24 11:13:30,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7810 conditions, 1111 events. 612/1111 cut-off events. For 35880/35880 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5383 event pairs, 23 based on Foata normal form. 36/1147 useless extension candidates. Maximal degree in co-relation 7754. Up to 355 conditions per place. [2023-08-24 11:13:30,309 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 71 selfloop transitions, 134 changer transitions 41/246 dead transitions. [2023-08-24 11:13:30,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 246 transitions, 3750 flow [2023-08-24 11:13:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-24 11:13:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-24 11:13:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1571 transitions. [2023-08-24 11:13:30,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45457175925925924 [2023-08-24 11:13:30,316 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1571 transitions. [2023-08-24 11:13:30,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1571 transitions. [2023-08-24 11:13:30,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:30,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1571 transitions. [2023-08-24 11:13:30,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 58.18518518518518) internal successors, (1571), 27 states have internal predecessors, (1571), 0 states have call successors, (0), 0 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 11:13:30,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 128.0) internal successors, (3584), 28 states have internal predecessors, (3584), 0 states have call successors, (0), 0 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 11:13:30,364 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 128.0) internal successors, (3584), 28 states have internal predecessors, (3584), 0 states have call successors, (0), 0 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 11:13:30,364 INFO L175 Difference]: Start difference. First operand has 116 places, 108 transitions, 1476 flow. Second operand 27 states and 1571 transitions. [2023-08-24 11:13:30,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 246 transitions, 3750 flow [2023-08-24 11:13:30,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 246 transitions, 3445 flow, removed 144 selfloop flow, removed 4 redundant places. [2023-08-24 11:13:30,457 INFO L231 Difference]: Finished difference. Result has 153 places, 158 transitions, 2639 flow [2023-08-24 11:13:30,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2639, PETRI_PLACES=153, PETRI_TRANSITIONS=158} [2023-08-24 11:13:30,458 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 135 predicate places. [2023-08-24 11:13:30,458 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 158 transitions, 2639 flow [2023-08-24 11:13:30,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.8125) internal successors, (877), 16 states have internal predecessors, (877), 0 states have call successors, (0), 0 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 11:13:30,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:30,458 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:30,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-24 11:13:30,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:30,665 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:30,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:30,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1394490875, now seen corresponding path program 7 times [2023-08-24 11:13:30,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:30,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645638337] [2023-08-24 11:13:30,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:30,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 11:13:30,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:30,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645638337] [2023-08-24 11:13:30,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645638337] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:30,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714796555] [2023-08-24 11:13:30,782 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 11:13:30,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:30,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:30,784 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 11:13:30,794 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 11:13:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:30,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 11:13:30,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:30,910 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 11:13:30,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:13:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 11:13:31,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714796555] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:13:31,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:13:31,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-08-24 11:13:31,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901373564] [2023-08-24 11:13:31,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:13:31,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 11:13:31,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:31,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 11:13:31,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-08-24 11:13:31,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:31,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 158 transitions, 2639 flow. Second operand has 16 states, 16 states have (on average 54.875) internal successors, (878), 16 states have internal predecessors, (878), 0 states have call successors, (0), 0 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 11:13:31,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:31,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:31,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:31,686 INFO L124 PetriNetUnfolderBase]: 716/1303 cut-off events. [2023-08-24 11:13:31,686 INFO L125 PetriNetUnfolderBase]: For 72014/72014 co-relation queries the response was YES. [2023-08-24 11:13:31,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11669 conditions, 1303 events. 716/1303 cut-off events. For 72014/72014 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6505 event pairs, 21 based on Foata normal form. 28/1331 useless extension candidates. Maximal degree in co-relation 11598. Up to 426 conditions per place. [2023-08-24 11:13:31,701 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 63 selfloop transitions, 160 changer transitions 44/267 dead transitions. [2023-08-24 11:13:31,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 267 transitions, 5374 flow [2023-08-24 11:13:31,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-24 11:13:31,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-24 11:13:31,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1454 transitions. [2023-08-24 11:13:31,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454375 [2023-08-24 11:13:31,706 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1454 transitions. [2023-08-24 11:13:31,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1454 transitions. [2023-08-24 11:13:31,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:31,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1454 transitions. [2023-08-24 11:13:31,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 58.16) internal successors, (1454), 25 states have internal predecessors, (1454), 0 states have call successors, (0), 0 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 11:13:31,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 128.0) internal successors, (3328), 26 states have internal predecessors, (3328), 0 states have call successors, (0), 0 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 11:13:31,716 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 128.0) internal successors, (3328), 26 states have internal predecessors, (3328), 0 states have call successors, (0), 0 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 11:13:31,716 INFO L175 Difference]: Start difference. First operand has 153 places, 158 transitions, 2639 flow. Second operand 25 states and 1454 transitions. [2023-08-24 11:13:31,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 267 transitions, 5374 flow [2023-08-24 11:13:31,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 267 transitions, 4059 flow, removed 628 selfloop flow, removed 11 redundant places. [2023-08-24 11:13:31,911 INFO L231 Difference]: Finished difference. Result has 176 places, 192 transitions, 3182 flow [2023-08-24 11:13:31,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3182, PETRI_PLACES=176, PETRI_TRANSITIONS=192} [2023-08-24 11:13:31,912 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 158 predicate places. [2023-08-24 11:13:31,912 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 192 transitions, 3182 flow [2023-08-24 11:13:31,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.875) internal successors, (878), 16 states have internal predecessors, (878), 0 states have call successors, (0), 0 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 11:13:31,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:31,913 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:31,919 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 11:13:32,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-24 11:13:32,119 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:32,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:32,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1109826044, now seen corresponding path program 8 times [2023-08-24 11:13:32,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:32,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668678052] [2023-08-24 11:13:32,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:32,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:32,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:32,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668678052] [2023-08-24 11:13:32,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668678052] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:32,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721873940] [2023-08-24 11:13:32,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 11:13:32,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:32,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:32,284 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 11:13:32,295 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 11:13:32,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 11:13:32,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 11:13:32,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 11:13:32,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:32,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:13:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:32,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721873940] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:13:32,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:13:32,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-24 11:13:32,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72042833] [2023-08-24 11:13:32,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:13:32,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-24 11:13:32,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:32,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-24 11:13:32,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2023-08-24 11:13:32,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:32,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 192 transitions, 3182 flow. Second operand has 26 states, 26 states have (on average 54.42307692307692) internal successors, (1415), 26 states have internal predecessors, (1415), 0 states have call successors, (0), 0 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 11:13:32,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:32,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:32,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:33,393 INFO L124 PetriNetUnfolderBase]: 756/1371 cut-off events. [2023-08-24 11:13:33,393 INFO L125 PetriNetUnfolderBase]: For 67147/67147 co-relation queries the response was YES. [2023-08-24 11:13:33,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11830 conditions, 1371 events. 756/1371 cut-off events. For 67147/67147 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6832 event pairs, 28 based on Foata normal form. 12/1383 useless extension candidates. Maximal degree in co-relation 11751. Up to 446 conditions per place. [2023-08-24 11:13:33,409 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 70 selfloop transitions, 172 changer transitions 50/292 dead transitions. [2023-08-24 11:13:33,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 292 transitions, 5346 flow [2023-08-24 11:13:33,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-24 11:13:33,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-24 11:13:33,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1624 transitions. [2023-08-24 11:13:33,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2023-08-24 11:13:33,412 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1624 transitions. [2023-08-24 11:13:33,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1624 transitions. [2023-08-24 11:13:33,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:33,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1624 transitions. [2023-08-24 11:13:33,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 58.0) internal successors, (1624), 28 states have internal predecessors, (1624), 0 states have call successors, (0), 0 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 11:13:33,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 128.0) internal successors, (3712), 29 states have internal predecessors, (3712), 0 states have call successors, (0), 0 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 11:13:33,420 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 128.0) internal successors, (3712), 29 states have internal predecessors, (3712), 0 states have call successors, (0), 0 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 11:13:33,420 INFO L175 Difference]: Start difference. First operand has 176 places, 192 transitions, 3182 flow. Second operand 28 states and 1624 transitions. [2023-08-24 11:13:33,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 292 transitions, 5346 flow [2023-08-24 11:13:33,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 292 transitions, 4886 flow, removed 203 selfloop flow, removed 8 redundant places. [2023-08-24 11:13:33,601 INFO L231 Difference]: Finished difference. Result has 201 places, 202 transitions, 3565 flow [2023-08-24 11:13:33,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3565, PETRI_PLACES=201, PETRI_TRANSITIONS=202} [2023-08-24 11:13:33,601 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 183 predicate places. [2023-08-24 11:13:33,602 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 202 transitions, 3565 flow [2023-08-24 11:13:33,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 54.42307692307692) internal successors, (1415), 26 states have internal predecessors, (1415), 0 states have call successors, (0), 0 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 11:13:33,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:33,602 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:33,614 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 11:13:33,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:33,809 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:33,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:33,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1628923185, now seen corresponding path program 9 times [2023-08-24 11:13:33,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:33,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630841685] [2023-08-24 11:13:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:33,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:33,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:33,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630841685] [2023-08-24 11:13:33,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630841685] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:33,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525741607] [2023-08-24 11:13:33,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 11:13:33,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:33,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:33,881 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 11:13:33,884 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 11:13:33,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-24 11:13:33,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 11:13:33,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 11:13:33,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:33,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 11:13:33,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525741607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:13:33,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 11:13:33,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-08-24 11:13:33,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490458043] [2023-08-24 11:13:33,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:13:33,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 11:13:33,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:33,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 11:13:33,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-24 11:13:33,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 128 [2023-08-24 11:13:33,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 202 transitions, 3565 flow. Second operand has 8 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 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 11:13:33,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:33,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 128 [2023-08-24 11:13:33,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:34,538 INFO L124 PetriNetUnfolderBase]: 1723/2880 cut-off events. [2023-08-24 11:13:34,538 INFO L125 PetriNetUnfolderBase]: For 144386/144386 co-relation queries the response was YES. [2023-08-24 11:13:34,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21950 conditions, 2880 events. 1723/2880 cut-off events. For 144386/144386 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16292 event pairs, 77 based on Foata normal form. 265/3145 useless extension candidates. Maximal degree in co-relation 21872. Up to 1226 conditions per place. [2023-08-24 11:13:34,565 INFO L140 encePairwiseOnDemand]: 125/128 looper letters, 0 selfloop transitions, 0 changer transitions 667/667 dead transitions. [2023-08-24 11:13:34,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 667 transitions, 12099 flow [2023-08-24 11:13:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 11:13:34,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 11:13:34,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 505 transitions. [2023-08-24 11:13:34,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931640625 [2023-08-24 11:13:34,566 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 505 transitions. [2023-08-24 11:13:34,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 505 transitions. [2023-08-24 11:13:34,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:34,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 505 transitions. [2023-08-24 11:13:34,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 0 states have call successors, (0), 0 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 11:13:34,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 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 11:13:34,569 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 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 11:13:34,569 INFO L175 Difference]: Start difference. First operand has 201 places, 202 transitions, 3565 flow. Second operand 8 states and 505 transitions. [2023-08-24 11:13:34,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 667 transitions, 12099 flow [2023-08-24 11:13:34,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 667 transitions, 10671 flow, removed 156 selfloop flow, removed 27 redundant places. [2023-08-24 11:13:34,812 INFO L231 Difference]: Finished difference. Result has 179 places, 0 transitions, 0 flow [2023-08-24 11:13:34,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2684, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=179, PETRI_TRANSITIONS=0} [2023-08-24 11:13:34,813 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 161 predicate places. [2023-08-24 11:13:34,813 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 0 transitions, 0 flow [2023-08-24 11:13:34,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 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 11:13:34,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 11:13:34,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 11:13:34,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 11:13:34,829 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 11:13:35,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:35,021 INFO L445 BasicCegarLoop]: Path program histogram: [9, 2, 1] [2023-08-24 11:13:35,024 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:13:35,024 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:13:35,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:13:35 BasicIcfg [2023-08-24 11:13:35,026 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:13:35,027 INFO L158 Benchmark]: Toolchain (without parser) took 13327.97ms. Allocated memory was 360.7MB in the beginning and 580.9MB in the end (delta: 220.2MB). Free memory was 335.0MB in the beginning and 411.7MB in the end (delta: -76.6MB). Peak memory consumption was 369.4MB. Max. memory is 16.0GB. [2023-08-24 11:13:35,027 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 360.7MB. Free memory is still 338.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:13:35,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 511.11ms. Allocated memory is still 360.7MB. Free memory was 335.0MB in the beginning and 315.7MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 11:13:35,027 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.26ms. Allocated memory is still 360.7MB. Free memory was 315.7MB in the beginning and 313.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:13:35,027 INFO L158 Benchmark]: Boogie Preprocessor took 36.77ms. Allocated memory is still 360.7MB. Free memory was 313.6MB in the beginning and 312.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:13:35,028 INFO L158 Benchmark]: RCFGBuilder took 343.10ms. Allocated memory is still 360.7MB. Free memory was 312.3MB in the beginning and 298.9MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 11:13:35,028 INFO L158 Benchmark]: TraceAbstraction took 12376.12ms. Allocated memory was 360.7MB in the beginning and 580.9MB in the end (delta: 220.2MB). Free memory was 298.4MB in the beginning and 411.7MB in the end (delta: -113.2MB). Peak memory consumption was 333.7MB. Max. memory is 16.0GB. [2023-08-24 11:13:35,029 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 360.7MB. Free memory is still 338.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 511.11ms. Allocated memory is still 360.7MB. Free memory was 335.0MB in the beginning and 315.7MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.26ms. Allocated memory is still 360.7MB. Free memory was 315.7MB in the beginning and 313.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.77ms. Allocated memory is still 360.7MB. Free memory was 313.6MB in the beginning and 312.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 343.10ms. Allocated memory is still 360.7MB. Free memory was 312.3MB in the beginning and 298.9MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 12376.12ms. Allocated memory was 360.7MB in the beginning and 580.9MB in the end (delta: 220.2MB). Free memory was 298.4MB in the beginning and 411.7MB in the end (delta: -113.2MB). Peak memory consumption was 333.7MB. 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: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 68 PlacesBefore, 18 PlacesAfterwards, 66 TransitionsBefore, 14 TransitionsAfterwards, 1200 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 60 TotalNumberOfCompositions, 1095 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 977, independent: 951, independent conditional: 0, independent unconditional: 951, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 646, independent: 636, independent conditional: 0, independent unconditional: 636, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 977, independent: 315, independent conditional: 0, independent unconditional: 315, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 646, unknown conditional: 0, unknown unconditional: 646] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 722]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.3s, OverallIterations: 12, TraceHistogramMax: 6, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1214 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1214 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1810 IncrementalHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 0 mSDtfsCounter, 1810 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 369 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1794 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3565occurred in iteration=11, InterpolantAutomatonStates: 174, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 313 ConstructedInterpolants, 0 QuantifiedInterpolants, 1243 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1015 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 25 InterpolantComputations, 6 PerfectInterpolantSequences, 57/203 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 11:13:35,053 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 Received shutdown request...