/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-wmm/safe003_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:47:01,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:47:01,803 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 11:47:01,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:47:01,813 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:47:01,849 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:47:01,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:47:01,854 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:47:01,855 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:47:01,859 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:47:01,859 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:47:01,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:47:01,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:47:01,860 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:47:01,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:47:01,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:47:01,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:47:01,860 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:47:01,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:47:01,861 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:47:01,861 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:47:01,863 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:47:01,863 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:47:01,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:47:01,864 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:47:01,864 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:47:01,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:47:01,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:47:01,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:47:01,865 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:47:01,866 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:47:01,866 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:47:01,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:47:01,866 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:47:01,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:47:01,866 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:47:02,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:47:02,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:47:02,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:47:02,175 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:47:02,175 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:47:02,177 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.i [2023-08-24 11:47:03,337 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:47:03,571 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:47:03,571 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.i [2023-08-24 11:47:03,593 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fca2a83af/31467c0921ac45139e7df954a1e83198/FLAGefe28e4b8 [2023-08-24 11:47:03,605 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fca2a83af/31467c0921ac45139e7df954a1e83198 [2023-08-24 11:47:03,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:47:03,609 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:47:03,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:47:03,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:47:03,612 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:47:03,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:47:03" (1/1) ... [2023-08-24 11:47:03,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bd3dd46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:03, skipping insertion in model container [2023-08-24 11:47:03,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:47:03" (1/1) ... [2023-08-24 11:47:03,653 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:47:03,778 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-wmm/safe003_tso.i[945,958] [2023-08-24 11:47:03,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:47:03,943 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:47:03,956 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-wmm/safe003_tso.i[945,958] [2023-08-24 11:47:03,974 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 11:47:03,975 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 11:47:04,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:47:04,041 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:47:04,041 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:47:04,048 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:47:04,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:04 WrapperNode [2023-08-24 11:47:04,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:47:04,049 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:47:04,050 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:47:04,050 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:47:04,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:04" (1/1) ... [2023-08-24 11:47:04,067 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:04" (1/1) ... [2023-08-24 11:47:04,087 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-24 11:47:04,088 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:47:04,089 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:47:04,089 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:47:04,089 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:47:04,096 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:04" (1/1) ... [2023-08-24 11:47:04,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:04" (1/1) ... [2023-08-24 11:47:04,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:04" (1/1) ... [2023-08-24 11:47:04,110 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:04" (1/1) ... [2023-08-24 11:47:04,115 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:04" (1/1) ... [2023-08-24 11:47:04,116 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:04" (1/1) ... [2023-08-24 11:47:04,117 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:04" (1/1) ... [2023-08-24 11:47:04,118 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:04" (1/1) ... [2023-08-24 11:47:04,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:47:04,134 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:47:04,134 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:47:04,135 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:47:04,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:04" (1/1) ... [2023-08-24 11:47:04,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:47:04,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:47:04,162 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 11:47:04,189 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 11:47:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:47:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 11:47:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:47:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:47:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:47:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 11:47:04,205 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 11:47:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 11:47:04,205 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 11:47:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 11:47:04,205 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 11:47:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:47:04,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 11:47:04,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:47:04,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:47:04,208 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 11:47:04,330 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:47:04,332 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:47:04,544 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:47:04,553 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:47:04,553 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 11:47:04,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:47:04 BoogieIcfgContainer [2023-08-24 11:47:04,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:47:04,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:47:04,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:47:04,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:47:04,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:47:03" (1/3) ... [2023-08-24 11:47:04,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7333d308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:47:04, skipping insertion in model container [2023-08-24 11:47:04,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:47:04" (2/3) ... [2023-08-24 11:47:04,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7333d308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:47:04, skipping insertion in model container [2023-08-24 11:47:04,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:47:04" (3/3) ... [2023-08-24 11:47:04,565 INFO L112 eAbstractionObserver]: Analyzing ICFG safe003_tso.i [2023-08-24 11:47:04,581 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:47:04,582 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 11:47:04,582 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:47:04,638 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 11:47:04,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-08-24 11:47:04,728 INFO L124 PetriNetUnfolderBase]: 2/82 cut-off events. [2023-08-24 11:47:04,730 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:47:04,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-24 11:47:04,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-08-24 11:47:04,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-08-24 11:47:04,743 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:47:04,758 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-24 11:47:04,766 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-24 11:47:04,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-08-24 11:47:04,794 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2023-08-24 11:47:04,794 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:47:04,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-24 11:47:04,796 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-24 11:47:06,866 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-08-24 11:47:06,867 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-08-24 11:47:06,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:47:06,884 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;@7b6c11c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:47:06,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 11:47:06,890 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:47:06,890 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-24 11:47:06,890 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:47:06,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:47:06,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:06,892 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:47:06,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:47:06,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1940031658, now seen corresponding path program 1 times [2023-08-24 11:47:06,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:47:06,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307318290] [2023-08-24 11:47:06,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:47:06,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:47:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:47:07,375 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 11:47:07,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:47:07,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307318290] [2023-08-24 11:47:07,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307318290] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:47:07,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:47:07,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:47:07,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096151229] [2023-08-24 11:47:07,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:47:07,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:47:07,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:47:07,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:47:07,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:47:07,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 11:47:07,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 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 11:47:07,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:47:07,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 11:47:07,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:47:07,593 INFO L124 PetriNetUnfolderBase]: 416/720 cut-off events. [2023-08-24 11:47:07,594 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-24 11:47:07,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 720 events. 416/720 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3589 event pairs, 159 based on Foata normal form. 43/763 useless extension candidates. Maximal degree in co-relation 1442. Up to 362 conditions per place. [2023-08-24 11:47:07,600 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-08-24 11:47:07,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 133 flow [2023-08-24 11:47:07,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:47:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:47:07,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-08-24 11:47:07,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2023-08-24 11:47:07,612 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-08-24 11:47:07,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-08-24 11:47:07,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:47:07,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-08-24 11:47:07,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 11:47:07,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 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 11:47:07,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 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 11:47:07,624 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 237 transitions. [2023-08-24 11:47:07,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 133 flow [2023-08-24 11:47:07,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 11:47:07,628 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-08-24 11:47:07,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-24 11:47:07,633 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-24 11:47:07,634 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-08-24 11:47:07,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 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 11:47:07,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:47:07,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:07,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:47:07,635 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:47:07,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:47:07,636 INFO L85 PathProgramCache]: Analyzing trace with hash 11438640, now seen corresponding path program 1 times [2023-08-24 11:47:07,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:47:07,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563415499] [2023-08-24 11:47:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:47:07,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:47:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:47:07,843 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 11:47:07,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:47:07,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563415499] [2023-08-24 11:47:07,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563415499] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:47:07,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:47:07,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:47:07,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558408338] [2023-08-24 11:47:07,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:47:07,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:47:07,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:47:07,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:47:07,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:47:07,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 11:47:07,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 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 11:47:07,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:47:07,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 11:47:07,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:47:07,950 INFO L124 PetriNetUnfolderBase]: 391/674 cut-off events. [2023-08-24 11:47:07,950 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2023-08-24 11:47:07,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1837 conditions, 674 events. 391/674 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3303 event pairs, 51 based on Foata normal form. 8/681 useless extension candidates. Maximal degree in co-relation 1825. Up to 307 conditions per place. [2023-08-24 11:47:07,957 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 30 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-08-24 11:47:07,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 212 flow [2023-08-24 11:47:07,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:47:07,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:47:07,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-08-24 11:47:07,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514184397163121 [2023-08-24 11:47:07,964 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-08-24 11:47:07,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-08-24 11:47:07,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:47:07,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-08-24 11:47:07,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 11:47:07,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 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 11:47:07,970 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 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 11:47:07,970 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 311 transitions. [2023-08-24 11:47:07,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 212 flow [2023-08-24 11:47:07,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:47:07,975 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 122 flow [2023-08-24 11:47:07,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-08-24 11:47:07,976 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-24 11:47:07,978 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 122 flow [2023-08-24 11:47:07,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 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 11:47:07,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:47:07,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:07,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:47:07,987 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:47:07,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:47:07,990 INFO L85 PathProgramCache]: Analyzing trace with hash 11438609, now seen corresponding path program 1 times [2023-08-24 11:47:07,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:47:07,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908163717] [2023-08-24 11:47:07,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:47:07,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:47:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:47:08,075 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 11:47:08,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:47:08,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908163717] [2023-08-24 11:47:08,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908163717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:47:08,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:47:08,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:47:08,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422113921] [2023-08-24 11:47:08,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:47:08,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:47:08,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:47:08,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:47:08,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:47:08,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 141 [2023-08-24 11:47:08,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 11:47:08,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:47:08,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 141 [2023-08-24 11:47:08,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:47:08,172 INFO L124 PetriNetUnfolderBase]: 365/630 cut-off events. [2023-08-24 11:47:08,172 INFO L125 PetriNetUnfolderBase]: For 529/529 co-relation queries the response was YES. [2023-08-24 11:47:08,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1895 conditions, 630 events. 365/630 cut-off events. For 529/529 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3000 event pairs, 107 based on Foata normal form. 4/634 useless extension candidates. Maximal degree in co-relation 1880. Up to 564 conditions per place. [2023-08-24 11:47:08,177 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 32 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2023-08-24 11:47:08,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 39 transitions, 266 flow [2023-08-24 11:47:08,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:47:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:47:08,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-08-24 11:47:08,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5839243498817966 [2023-08-24 11:47:08,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-08-24 11:47:08,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-08-24 11:47:08,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:47:08,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-08-24 11:47:08,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 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 11:47:08,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 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 11:47:08,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 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 11:47:08,181 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 122 flow. Second operand 3 states and 247 transitions. [2023-08-24 11:47:08,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 39 transitions, 266 flow [2023-08-24 11:47:08,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 11:47:08,184 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 165 flow [2023-08-24 11:47:08,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-24 11:47:08,185 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-24 11:47:08,185 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 165 flow [2023-08-24 11:47:08,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 11:47:08,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:47:08,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:08,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:47:08,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:47:08,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:47:08,187 INFO L85 PathProgramCache]: Analyzing trace with hash 354597195, now seen corresponding path program 1 times [2023-08-24 11:47:08,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:47:08,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925133379] [2023-08-24 11:47:08,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:47:08,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:47:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:47:08,305 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 11:47:08,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:47:08,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925133379] [2023-08-24 11:47:08,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925133379] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:47:08,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:47:08,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:47:08,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536393720] [2023-08-24 11:47:08,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:47:08,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:47:08,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:47:08,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:47:08,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:47:08,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-08-24 11:47:08,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 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 11:47:08,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:47:08,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-08-24 11:47:08,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:47:08,455 INFO L124 PetriNetUnfolderBase]: 605/975 cut-off events. [2023-08-24 11:47:08,455 INFO L125 PetriNetUnfolderBase]: For 1308/1308 co-relation queries the response was YES. [2023-08-24 11:47:08,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3200 conditions, 975 events. 605/975 cut-off events. For 1308/1308 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4380 event pairs, 85 based on Foata normal form. 12/987 useless extension candidates. Maximal degree in co-relation 3183. Up to 360 conditions per place. [2023-08-24 11:47:08,461 INFO L140 encePairwiseOnDemand]: 133/141 looper letters, 41 selfloop transitions, 18 changer transitions 7/66 dead transitions. [2023-08-24 11:47:08,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 66 transitions, 475 flow [2023-08-24 11:47:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 11:47:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 11:47:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2023-08-24 11:47:08,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.550354609929078 [2023-08-24 11:47:08,463 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 388 transitions. [2023-08-24 11:47:08,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 388 transitions. [2023-08-24 11:47:08,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:47:08,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 388 transitions. [2023-08-24 11:47:08,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 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 11:47:08,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 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 11:47:08,466 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 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 11:47:08,466 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 165 flow. Second operand 5 states and 388 transitions. [2023-08-24 11:47:08,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 66 transitions, 475 flow [2023-08-24 11:47:08,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 66 transitions, 469 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 11:47:08,473 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 298 flow [2023-08-24 11:47:08,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2023-08-24 11:47:08,474 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-08-24 11:47:08,474 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 298 flow [2023-08-24 11:47:08,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 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 11:47:08,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:47:08,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:08,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:47:08,475 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:47:08,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:47:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash 380918055, now seen corresponding path program 2 times [2023-08-24 11:47:08,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:47:08,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814006115] [2023-08-24 11:47:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:47:08,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:47:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:47:08,622 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 11:47:08,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:47:08,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814006115] [2023-08-24 11:47:08,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814006115] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:47:08,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:47:08,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:47:08,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954812171] [2023-08-24 11:47:08,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:47:08,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:47:08,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:47:08,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:47:08,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:47:08,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-08-24 11:47:08,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 298 flow. Second operand has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 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 11:47:08,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:47:08,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-08-24 11:47:08,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:47:08,766 INFO L124 PetriNetUnfolderBase]: 580/971 cut-off events. [2023-08-24 11:47:08,766 INFO L125 PetriNetUnfolderBase]: For 2735/2735 co-relation queries the response was YES. [2023-08-24 11:47:08,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3455 conditions, 971 events. 580/971 cut-off events. For 2735/2735 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4642 event pairs, 133 based on Foata normal form. 36/1007 useless extension candidates. Maximal degree in co-relation 3434. Up to 418 conditions per place. [2023-08-24 11:47:08,771 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 34 selfloop transitions, 8 changer transitions 22/64 dead transitions. [2023-08-24 11:47:08,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 64 transitions, 533 flow [2023-08-24 11:47:08,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 11:47:08,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 11:47:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2023-08-24 11:47:08,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5418439716312057 [2023-08-24 11:47:08,773 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 382 transitions. [2023-08-24 11:47:08,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 382 transitions. [2023-08-24 11:47:08,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:47:08,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 382 transitions. [2023-08-24 11:47:08,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 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 11:47:08,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 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 11:47:08,776 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 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 11:47:08,776 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 298 flow. Second operand 5 states and 382 transitions. [2023-08-24 11:47:08,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 64 transitions, 533 flow [2023-08-24 11:47:08,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 531 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-24 11:47:08,784 INFO L231 Difference]: Finished difference. Result has 46 places, 26 transitions, 204 flow [2023-08-24 11:47:08,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=46, PETRI_TRANSITIONS=26} [2023-08-24 11:47:08,786 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-08-24 11:47:08,787 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 26 transitions, 204 flow [2023-08-24 11:47:08,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 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 11:47:08,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:47:08,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:08,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 11:47:08,789 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:47:08,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:47:08,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1255798799, now seen corresponding path program 1 times [2023-08-24 11:47:08,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:47:08,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532888502] [2023-08-24 11:47:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:47:08,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:47:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:47:08,896 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 11:47:08,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:47:08,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532888502] [2023-08-24 11:47:08,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532888502] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:47:08,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:47:08,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:47:08,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189692143] [2023-08-24 11:47:08,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:47:08,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:47:08,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:47:08,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:47:08,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:47:08,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 11:47:08,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 26 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 11:47:08,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:47:08,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 11:47:08,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:47:08,957 INFO L124 PetriNetUnfolderBase]: 194/340 cut-off events. [2023-08-24 11:47:08,957 INFO L125 PetriNetUnfolderBase]: For 911/911 co-relation queries the response was YES. [2023-08-24 11:47:08,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1328 conditions, 340 events. 194/340 cut-off events. For 911/911 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1206 event pairs, 76 based on Foata normal form. 4/343 useless extension candidates. Maximal degree in co-relation 1303. Up to 151 conditions per place. [2023-08-24 11:47:08,959 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 20 selfloop transitions, 7 changer transitions 8/37 dead transitions. [2023-08-24 11:47:08,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 37 transitions, 344 flow [2023-08-24 11:47:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:47:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:47:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2023-08-24 11:47:08,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2023-08-24 11:47:08,961 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 304 transitions. [2023-08-24 11:47:08,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 304 transitions. [2023-08-24 11:47:08,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:47:08,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 304 transitions. [2023-08-24 11:47:08,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 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 11:47:08,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 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 11:47:08,963 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 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 11:47:08,964 INFO L175 Difference]: Start difference. First operand has 46 places, 26 transitions, 204 flow. Second operand 4 states and 304 transitions. [2023-08-24 11:47:08,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 37 transitions, 344 flow [2023-08-24 11:47:08,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 270 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-08-24 11:47:08,968 INFO L231 Difference]: Finished difference. Result has 42 places, 24 transitions, 156 flow [2023-08-24 11:47:08,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2023-08-24 11:47:08,968 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-08-24 11:47:08,968 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 24 transitions, 156 flow [2023-08-24 11:47:08,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 11:47:08,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:47:08,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:08,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 11:47:08,969 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:47:08,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:47:08,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1849463283, now seen corresponding path program 1 times [2023-08-24 11:47:08,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:47:08,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376135487] [2023-08-24 11:47:08,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:47:08,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:47:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:47:09,055 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 11:47:09,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:47:09,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376135487] [2023-08-24 11:47:09,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376135487] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:47:09,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:47:09,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:47:09,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350892435] [2023-08-24 11:47:09,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:47:09,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:47:09,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:47:09,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:47:09,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:47:09,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 11:47:09,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 24 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 0 states have call successors, (0), 0 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 11:47:09,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:47:09,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 11:47:09,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:47:09,158 INFO L124 PetriNetUnfolderBase]: 146/285 cut-off events. [2023-08-24 11:47:09,158 INFO L125 PetriNetUnfolderBase]: For 404/404 co-relation queries the response was YES. [2023-08-24 11:47:09,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 285 events. 146/285 cut-off events. For 404/404 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1014 event pairs, 39 based on Foata normal form. 4/289 useless extension candidates. Maximal degree in co-relation 960. Up to 98 conditions per place. [2023-08-24 11:47:09,160 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 16 selfloop transitions, 3 changer transitions 22/42 dead transitions. [2023-08-24 11:47:09,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 293 flow [2023-08-24 11:47:09,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 11:47:09,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 11:47:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2023-08-24 11:47:09,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5278622087132725 [2023-08-24 11:47:09,162 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 521 transitions. [2023-08-24 11:47:09,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 521 transitions. [2023-08-24 11:47:09,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:47:09,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 521 transitions. [2023-08-24 11:47:09,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 0 states have call successors, (0), 0 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 11:47:09,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 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 11:47:09,166 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 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 11:47:09,166 INFO L175 Difference]: Start difference. First operand has 42 places, 24 transitions, 156 flow. Second operand 7 states and 521 transitions. [2023-08-24 11:47:09,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 293 flow [2023-08-24 11:47:09,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 280 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 11:47:09,169 INFO L231 Difference]: Finished difference. Result has 47 places, 17 transitions, 96 flow [2023-08-24 11:47:09,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=96, PETRI_PLACES=47, PETRI_TRANSITIONS=17} [2023-08-24 11:47:09,170 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2023-08-24 11:47:09,170 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 17 transitions, 96 flow [2023-08-24 11:47:09,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 0 states have call successors, (0), 0 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 11:47:09,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:47:09,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:47:09,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 11:47:09,171 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:47:09,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:47:09,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1817634963, now seen corresponding path program 2 times [2023-08-24 11:47:09,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:47:09,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506817743] [2023-08-24 11:47:09,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:47:09,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:47:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:47:09,272 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 11:47:09,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:47:09,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506817743] [2023-08-24 11:47:09,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506817743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:47:09,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:47:09,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:47:09,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497362100] [2023-08-24 11:47:09,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:47:09,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:47:09,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:47:09,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:47:09,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:47:09,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 11:47:09,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 17 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 0 states have call successors, (0), 0 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 11:47:09,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:47:09,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 11:47:09,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:47:09,308 INFO L124 PetriNetUnfolderBase]: 47/96 cut-off events. [2023-08-24 11:47:09,308 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-08-24 11:47:09,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 96 events. 47/96 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 207 event pairs, 15 based on Foata normal form. 4/100 useless extension candidates. Maximal degree in co-relation 308. Up to 76 conditions per place. [2023-08-24 11:47:09,309 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-24 11:47:09,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 18 transitions, 124 flow [2023-08-24 11:47:09,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:47:09,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:47:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2023-08-24 11:47:09,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2023-08-24 11:47:09,311 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 294 transitions. [2023-08-24 11:47:09,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 294 transitions. [2023-08-24 11:47:09,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:47:09,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 294 transitions. [2023-08-24 11:47:09,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 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 11:47:09,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 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 11:47:09,314 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 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 11:47:09,314 INFO L175 Difference]: Start difference. First operand has 47 places, 17 transitions, 96 flow. Second operand 4 states and 294 transitions. [2023-08-24 11:47:09,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 18 transitions, 124 flow [2023-08-24 11:47:09,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 18 transitions, 82 flow, removed 4 selfloop flow, removed 15 redundant places. [2023-08-24 11:47:09,315 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-08-24 11:47:09,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-08-24 11:47:09,317 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-08-24 11:47:09,317 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-08-24 11:47:09,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 0 states have call successors, (0), 0 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 11:47:09,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 11:47:09,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 11:47:09,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 11:47:09,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 11:47:09,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 11:47:09,321 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-08-24 11:47:09,323 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:47:09,324 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:47:09,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:47:09 BasicIcfg [2023-08-24 11:47:09,332 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:47:09,333 INFO L158 Benchmark]: Toolchain (without parser) took 5724.32ms. Allocated memory was 385.9MB in the beginning and 511.7MB in the end (delta: 125.8MB). Free memory was 361.0MB in the beginning and 235.3MB in the end (delta: 125.7MB). Peak memory consumption was 253.1MB. Max. memory is 16.0GB. [2023-08-24 11:47:09,333 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 385.9MB. Free memory is still 362.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:47:09,333 INFO L158 Benchmark]: CACSL2BoogieTranslator took 439.16ms. Allocated memory is still 385.9MB. Free memory was 360.5MB in the beginning and 340.6MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 11:47:09,334 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.59ms. Allocated memory is still 385.9MB. Free memory was 340.6MB in the beginning and 338.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:47:09,334 INFO L158 Benchmark]: Boogie Preprocessor took 45.04ms. Allocated memory is still 385.9MB. Free memory was 338.5MB in the beginning and 336.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:47:09,334 INFO L158 Benchmark]: RCFGBuilder took 421.46ms. Allocated memory is still 385.9MB. Free memory was 336.9MB in the beginning and 322.8MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 11:47:09,335 INFO L158 Benchmark]: TraceAbstraction took 4773.71ms. Allocated memory was 385.9MB in the beginning and 511.7MB in the end (delta: 125.8MB). Free memory was 322.2MB in the beginning and 235.3MB in the end (delta: 86.9MB). Peak memory consumption was 215.4MB. Max. memory is 16.0GB. [2023-08-24 11:47:09,336 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 385.9MB. Free memory is still 362.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 439.16ms. Allocated memory is still 385.9MB. Free memory was 360.5MB in the beginning and 340.6MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.59ms. Allocated memory is still 385.9MB. Free memory was 340.6MB in the beginning and 338.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 45.04ms. Allocated memory is still 385.9MB. Free memory was 338.5MB in the beginning and 336.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 421.46ms. Allocated memory is still 385.9MB. Free memory was 336.9MB in the beginning and 322.8MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4773.71ms. Allocated memory was 385.9MB in the beginning and 511.7MB in the end (delta: 125.8MB). Free memory was 322.2MB in the beginning and 235.3MB in the end (delta: 86.9MB). Peak memory consumption was 215.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1193, independent: 1116, independent conditional: 0, independent unconditional: 1116, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 573, independent: 549, independent conditional: 0, independent unconditional: 549, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1193, independent: 567, independent conditional: 0, independent unconditional: 567, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 573, unknown conditional: 0, unknown unconditional: 573] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: 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 7 procedures, 108 locations, 4 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: 4.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 144 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 144 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 314 IncrementalHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 16 mSDtfsCounter, 314 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=4, InterpolantAutomatonStates: 35, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 391 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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 11:47:09,359 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...