/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.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:46:04,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:46:04,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:46:04,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:46:04,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 00:46:04,908 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:46:04,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:46:04,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:46:04,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:46:04,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:46:04,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:46:04,910 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:46:04,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:46:04,910 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:46:04,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:46:04,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:46:04,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:46:04,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:46:04,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:46:04,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:46:04,911 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:46:04,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:46:04,911 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:46:04,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:46:04,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:46:04,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:46:04,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:46:04,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:46:04,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:46:04,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:46:04,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:46:04,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:46:04,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:46:04,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:46:04,912 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:46:04,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:46:04,912 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:46:05,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:46:05,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:46:05,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:46:05,101 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:46:05,101 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:46:05,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2023-01-28 00:46:06,053 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:46:06,222 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:46:06,222 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2023-01-28 00:46:06,231 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b91d9adb/eeb190379f6741d28df0bb9ebf411586/FLAG131e6b2f6 [2023-01-28 00:46:06,240 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b91d9adb/eeb190379f6741d28df0bb9ebf411586 [2023-01-28 00:46:06,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:46:06,243 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:46:06,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:46:06,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:46:06,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:46:06,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:46:06" (1/1) ... [2023-01-28 00:46:06,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3696e689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:06, skipping insertion in model container [2023-01-28 00:46:06,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:46:06" (1/1) ... [2023-01-28 00:46:06,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:46:06,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:46:06,396 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.i[945,958] [2023-01-28 00:46:06,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:46:06,488 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:46:06,496 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.i[945,958] [2023-01-28 00:46:06,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:46:06,533 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:46:06,533 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:46:06,537 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:46:06,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:06 WrapperNode [2023-01-28 00:46:06,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:46:06,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:46:06,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:46:06,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:46:06,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:06" (1/1) ... [2023-01-28 00:46:06,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:06" (1/1) ... [2023-01-28 00:46:06,567 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-01-28 00:46:06,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:46:06,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:46:06,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:46:06,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:46:06,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:06" (1/1) ... [2023-01-28 00:46:06,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:06" (1/1) ... [2023-01-28 00:46:06,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:06" (1/1) ... [2023-01-28 00:46:06,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:06" (1/1) ... [2023-01-28 00:46:06,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:06" (1/1) ... [2023-01-28 00:46:06,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:06" (1/1) ... [2023-01-28 00:46:06,581 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:06" (1/1) ... [2023-01-28 00:46:06,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:06" (1/1) ... [2023-01-28 00:46:06,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:46:06,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:46:06,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:46:06,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:46:06,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:06" (1/1) ... [2023-01-28 00:46:06,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:46:06,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:46:06,606 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) [2023-01-28 00:46:06,620 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 [2023-01-28 00:46:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:46:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:46:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:46:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:46:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:46:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 00:46:06,639 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 00:46:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 00:46:06,641 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 00:46:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 00:46:06,641 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 00:46:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:46:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:46:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:46:06,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:46:06,642 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 00:46:06,727 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:46:06,729 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:46:06,842 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:46:06,846 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:46:06,847 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:46:06,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:46:06 BoogieIcfgContainer [2023-01-28 00:46:06,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:46:06,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:46:06,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:46:06,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:46:06,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:46:06" (1/3) ... [2023-01-28 00:46:06,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592e67ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:46:06, skipping insertion in model container [2023-01-28 00:46:06,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:06" (2/3) ... [2023-01-28 00:46:06,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592e67ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:46:06, skipping insertion in model container [2023-01-28 00:46:06,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:46:06" (3/3) ... [2023-01-28 00:46:06,854 INFO L112 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2023-01-28 00:46:06,865 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:46:06,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 00:46:06,866 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:46:06,906 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 00:46:06,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-01-28 00:46:06,981 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2023-01-28 00:46:06,981 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:46:06,985 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. [2023-01-28 00:46:06,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-01-28 00:46:06,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-01-28 00:46:06,990 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:46:06,996 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-01-28 00:46:07,009 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-01-28 00:46:07,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-01-28 00:46:07,032 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2023-01-28 00:46:07,033 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:46:07,033 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. [2023-01-28 00:46:07,034 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-28 00:46:08,585 INFO L134 LiptonReduction]: Checked pairs total: 2098 [2023-01-28 00:46:08,586 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-01-28 00:46:08,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:46:08,601 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;@54408015, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:46:08,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 00:46:08,604 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-01-28 00:46:08,609 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:46:08,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:46:08,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:46:08,610 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)] === [2023-01-28 00:46:08,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:46:08,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1331089238, now seen corresponding path program 1 times [2023-01-28 00:46:08,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:46:08,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646881649] [2023-01-28 00:46:08,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:46:08,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:46:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:46:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:46:08,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:46:08,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646881649] [2023-01-28 00:46:08,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646881649] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:46:08,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:46:08,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:46:08,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960291238] [2023-01-28 00:46:08,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:46:08,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:46:09,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:46:09,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:46:09,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:46:09,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 143 [2023-01-28 00:46:09,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:09,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:46:09,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 143 [2023-01-28 00:46:09,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:46:09,110 INFO L130 PetriNetUnfolder]: 143/265 cut-off events. [2023-01-28 00:46:09,110 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 00:46:09,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 265 events. 143/265 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1077 event pairs, 53 based on Foata normal form. 9/270 useless extension candidates. Maximal degree in co-relation 525. Up to 154 conditions per place. [2023-01-28 00:46:09,116 INFO L137 encePairwiseOnDemand]: 139/143 looper letters, 17 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-01-28 00:46:09,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 91 flow [2023-01-28 00:46:09,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:46:09,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:46:09,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2023-01-28 00:46:09,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5827505827505828 [2023-01-28 00:46:09,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2023-01-28 00:46:09,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2023-01-28 00:46:09,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:46:09,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2023-01-28 00:46:09,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:09,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:09,143 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:09,144 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 250 transitions. [2023-01-28 00:46:09,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 91 flow [2023-01-28 00:46:09,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 88 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 00:46:09,147 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2023-01-28 00:46:09,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-01-28 00:46:09,151 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-01-28 00:46:09,151 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2023-01-28 00:46:09,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:09,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:46:09,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:46:09,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:46:09,153 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)] === [2023-01-28 00:46:09,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:46:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1685907729, now seen corresponding path program 1 times [2023-01-28 00:46:09,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:46:09,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146377397] [2023-01-28 00:46:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:46:09,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:46:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:46:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:46:09,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:46:09,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146377397] [2023-01-28 00:46:09,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146377397] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:46:09,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:46:09,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:46:09,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693268411] [2023-01-28 00:46:09,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:46:09,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:46:09,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:46:09,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:46:09,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:46:09,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-01-28 00:46:09,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 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) [2023-01-28 00:46:09,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:46:09,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-01-28 00:46:09,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:46:09,481 INFO L130 PetriNetUnfolder]: 531/862 cut-off events. [2023-01-28 00:46:09,482 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2023-01-28 00:46:09,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1907 conditions, 862 events. 531/862 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3831 event pairs, 39 based on Foata normal form. 48/910 useless extension candidates. Maximal degree in co-relation 1896. Up to 421 conditions per place. [2023-01-28 00:46:09,488 INFO L137 encePairwiseOnDemand]: 136/143 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2023-01-28 00:46:09,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 182 flow [2023-01-28 00:46:09,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:46:09,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:46:09,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2023-01-28 00:46:09,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5541958041958042 [2023-01-28 00:46:09,492 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 317 transitions. [2023-01-28 00:46:09,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 317 transitions. [2023-01-28 00:46:09,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:46:09,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 317 transitions. [2023-01-28 00:46:09,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:09,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:09,496 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:09,496 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 317 transitions. [2023-01-28 00:46:09,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 182 flow [2023-01-28 00:46:09,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:46:09,498 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 101 flow [2023-01-28 00:46:09,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2023-01-28 00:46:09,499 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-01-28 00:46:09,499 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 101 flow [2023-01-28 00:46:09,499 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) [2023-01-28 00:46:09,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:46:09,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:46:09,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:46:09,500 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)] === [2023-01-28 00:46:09,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:46:09,502 INFO L85 PathProgramCache]: Analyzing trace with hash -724801001, now seen corresponding path program 1 times [2023-01-28 00:46:09,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:46:09,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985312110] [2023-01-28 00:46:09,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:46:09,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:46:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:46:09,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:46:09,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:46:09,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985312110] [2023-01-28 00:46:09,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985312110] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:46:09,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:46:09,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:46:09,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240087741] [2023-01-28 00:46:09,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:46:09,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:46:09,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:46:09,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:46:09,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:46:09,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-01-28 00:46:09,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:09,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:46:09,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-01-28 00:46:09,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:46:09,779 INFO L130 PetriNetUnfolder]: 702/1153 cut-off events. [2023-01-28 00:46:09,779 INFO L131 PetriNetUnfolder]: For 712/712 co-relation queries the response was YES. [2023-01-28 00:46:09,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3160 conditions, 1153 events. 702/1153 cut-off events. For 712/712 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5558 event pairs, 90 based on Foata normal form. 36/1189 useless extension candidates. Maximal degree in co-relation 3146. Up to 576 conditions per place. [2023-01-28 00:46:09,785 INFO L137 encePairwiseOnDemand]: 136/143 looper letters, 30 selfloop transitions, 9 changer transitions 10/49 dead transitions. [2023-01-28 00:46:09,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 49 transitions, 282 flow [2023-01-28 00:46:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:46:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:46:09,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 391 transitions. [2023-01-28 00:46:09,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468531468531469 [2023-01-28 00:46:09,787 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 391 transitions. [2023-01-28 00:46:09,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 391 transitions. [2023-01-28 00:46:09,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:46:09,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 391 transitions. [2023-01-28 00:46:09,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:09,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:09,789 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:09,789 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 101 flow. Second operand 5 states and 391 transitions. [2023-01-28 00:46:09,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 49 transitions, 282 flow [2023-01-28 00:46:09,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 00:46:09,792 INFO L231 Difference]: Finished difference. Result has 38 places, 25 transitions, 152 flow [2023-01-28 00:46:09,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2023-01-28 00:46:09,793 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-01-28 00:46:09,795 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 152 flow [2023-01-28 00:46:09,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:09,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:46:09,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:46:09,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:46:09,796 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)] === [2023-01-28 00:46:09,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:46:09,796 INFO L85 PathProgramCache]: Analyzing trace with hash -954009263, now seen corresponding path program 1 times [2023-01-28 00:46:09,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:46:09,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084761639] [2023-01-28 00:46:09,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:46:09,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:46:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:46:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:46:09,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:46:09,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084761639] [2023-01-28 00:46:09,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084761639] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:46:09,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:46:09,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 00:46:09,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414315082] [2023-01-28 00:46:09,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:46:09,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:46:09,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:46:09,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:46:09,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:46:09,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-01-28 00:46:09,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:09,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:46:09,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-01-28 00:46:09,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:46:10,064 INFO L130 PetriNetUnfolder]: 624/1063 cut-off events. [2023-01-28 00:46:10,064 INFO L131 PetriNetUnfolder]: For 1823/1823 co-relation queries the response was YES. [2023-01-28 00:46:10,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3241 conditions, 1063 events. 624/1063 cut-off events. For 1823/1823 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5171 event pairs, 103 based on Foata normal form. 36/1099 useless extension candidates. Maximal degree in co-relation 3222. Up to 296 conditions per place. [2023-01-28 00:46:10,068 INFO L137 encePairwiseOnDemand]: 136/143 looper letters, 31 selfloop transitions, 8 changer transitions 21/60 dead transitions. [2023-01-28 00:46:10,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 406 flow [2023-01-28 00:46:10,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 00:46:10,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 00:46:10,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2023-01-28 00:46:10,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394605394605395 [2023-01-28 00:46:10,071 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2023-01-28 00:46:10,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2023-01-28 00:46:10,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:46:10,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2023-01-28 00:46:10,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,077 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,077 INFO L175 Difference]: Start difference. First operand has 38 places, 25 transitions, 152 flow. Second operand 7 states and 540 transitions. [2023-01-28 00:46:10,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 406 flow [2023-01-28 00:46:10,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 388 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 00:46:10,084 INFO L231 Difference]: Finished difference. Result has 44 places, 23 transitions, 147 flow [2023-01-28 00:46:10,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=147, PETRI_PLACES=44, PETRI_TRANSITIONS=23} [2023-01-28 00:46:10,085 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-01-28 00:46:10,085 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 23 transitions, 147 flow [2023-01-28 00:46:10,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:46:10,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:46:10,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:46:10,086 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)] === [2023-01-28 00:46:10,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:46:10,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1296776372, now seen corresponding path program 1 times [2023-01-28 00:46:10,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:46:10,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95015089] [2023-01-28 00:46:10,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:46:10,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:46:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:46:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:46:10,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:46:10,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95015089] [2023-01-28 00:46:10,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95015089] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:46:10,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:46:10,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:46:10,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180104323] [2023-01-28 00:46:10,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:46:10,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:46:10,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:46:10,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:46:10,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:46:10,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-01-28 00:46:10,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 23 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:46:10,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-01-28 00:46:10,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:46:10,262 INFO L130 PetriNetUnfolder]: 279/496 cut-off events. [2023-01-28 00:46:10,262 INFO L131 PetriNetUnfolder]: For 974/974 co-relation queries the response was YES. [2023-01-28 00:46:10,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 496 events. 279/496 cut-off events. For 974/974 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1936 event pairs, 115 based on Foata normal form. 10/506 useless extension candidates. Maximal degree in co-relation 1516. Up to 220 conditions per place. [2023-01-28 00:46:10,264 INFO L137 encePairwiseOnDemand]: 138/143 looper letters, 23 selfloop transitions, 6 changer transitions 4/33 dead transitions. [2023-01-28 00:46:10,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 33 transitions, 256 flow [2023-01-28 00:46:10,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:46:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:46:10,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2023-01-28 00:46:10,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314685314685315 [2023-01-28 00:46:10,266 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 304 transitions. [2023-01-28 00:46:10,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 304 transitions. [2023-01-28 00:46:10,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:46:10,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 304 transitions. [2023-01-28 00:46:10,267 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) [2023-01-28 00:46:10,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,268 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,269 INFO L175 Difference]: Start difference. First operand has 44 places, 23 transitions, 147 flow. Second operand 4 states and 304 transitions. [2023-01-28 00:46:10,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 33 transitions, 256 flow [2023-01-28 00:46:10,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 215 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-28 00:46:10,271 INFO L231 Difference]: Finished difference. Result has 41 places, 24 transitions, 148 flow [2023-01-28 00:46:10,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=41, PETRI_TRANSITIONS=24} [2023-01-28 00:46:10,273 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-01-28 00:46:10,273 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 24 transitions, 148 flow [2023-01-28 00:46:10,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:46:10,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:46:10,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:46:10,274 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)] === [2023-01-28 00:46:10,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:46:10,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1545352258, now seen corresponding path program 1 times [2023-01-28 00:46:10,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:46:10,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600117192] [2023-01-28 00:46:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:46:10,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:46:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:46:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:46:10,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:46:10,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600117192] [2023-01-28 00:46:10,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600117192] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:46:10,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:46:10,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:46:10,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246043654] [2023-01-28 00:46:10,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:46:10,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:46:10,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:46:10,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:46:10,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:46:10,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 143 [2023-01-28 00:46:10,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 24 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:46:10,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 143 [2023-01-28 00:46:10,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:46:10,441 INFO L130 PetriNetUnfolder]: 235/452 cut-off events. [2023-01-28 00:46:10,442 INFO L131 PetriNetUnfolder]: For 569/569 co-relation queries the response was YES. [2023-01-28 00:46:10,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 452 events. 235/452 cut-off events. For 569/569 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1988 event pairs, 91 based on Foata normal form. 8/454 useless extension candidates. Maximal degree in co-relation 1298. Up to 207 conditions per place. [2023-01-28 00:46:10,443 INFO L137 encePairwiseOnDemand]: 139/143 looper letters, 24 selfloop transitions, 4 changer transitions 7/37 dead transitions. [2023-01-28 00:46:10,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 246 flow [2023-01-28 00:46:10,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:46:10,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:46:10,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-01-28 00:46:10,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611888111888111 [2023-01-28 00:46:10,445 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-01-28 00:46:10,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-01-28 00:46:10,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:46:10,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-01-28 00:46:10,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,447 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,447 INFO L175 Difference]: Start difference. First operand has 41 places, 24 transitions, 148 flow. Second operand 4 states and 321 transitions. [2023-01-28 00:46:10,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 246 flow [2023-01-28 00:46:10,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 233 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 00:46:10,448 INFO L231 Difference]: Finished difference. Result has 42 places, 21 transitions, 114 flow [2023-01-28 00:46:10,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=42, PETRI_TRANSITIONS=21} [2023-01-28 00:46:10,450 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-01-28 00:46:10,450 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 21 transitions, 114 flow [2023-01-28 00:46:10,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:46:10,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:46:10,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 00:46:10,451 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)] === [2023-01-28 00:46:10,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:46:10,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1546390138, now seen corresponding path program 2 times [2023-01-28 00:46:10,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:46:10,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734422103] [2023-01-28 00:46:10,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:46:10,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:46:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:46:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:46:10,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:46:10,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734422103] [2023-01-28 00:46:10,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734422103] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:46:10,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:46:10,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:46:10,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3679087] [2023-01-28 00:46:10,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:46:10,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:46:10,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:46:10,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:46:10,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:46:10,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 143 [2023-01-28 00:46:10,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 21 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:46:10,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 143 [2023-01-28 00:46:10,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:46:10,619 INFO L130 PetriNetUnfolder]: 213/394 cut-off events. [2023-01-28 00:46:10,619 INFO L131 PetriNetUnfolder]: For 488/488 co-relation queries the response was YES. [2023-01-28 00:46:10,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 394 events. 213/394 cut-off events. For 488/488 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1511 event pairs, 64 based on Foata normal form. 16/410 useless extension candidates. Maximal degree in co-relation 1112. Up to 297 conditions per place. [2023-01-28 00:46:10,620 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 19 selfloop transitions, 4 changer transitions 16/39 dead transitions. [2023-01-28 00:46:10,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 246 flow [2023-01-28 00:46:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:46:10,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:46:10,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 373 transitions. [2023-01-28 00:46:10,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216783216783217 [2023-01-28 00:46:10,622 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 373 transitions. [2023-01-28 00:46:10,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 373 transitions. [2023-01-28 00:46:10,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:46:10,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 373 transitions. [2023-01-28 00:46:10,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,624 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,624 INFO L175 Difference]: Start difference. First operand has 42 places, 21 transitions, 114 flow. Second operand 5 states and 373 transitions. [2023-01-28 00:46:10,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 246 flow [2023-01-28 00:46:10,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 214 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-01-28 00:46:10,626 INFO L231 Difference]: Finished difference. Result has 37 places, 17 transitions, 77 flow [2023-01-28 00:46:10,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=77, PETRI_PLACES=37, PETRI_TRANSITIONS=17} [2023-01-28 00:46:10,626 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-01-28 00:46:10,626 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 17 transitions, 77 flow [2023-01-28 00:46:10,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:46:10,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:46:10,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 00:46:10,627 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)] === [2023-01-28 00:46:10,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:46:10,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2020347454, now seen corresponding path program 1 times [2023-01-28 00:46:10,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:46:10,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287313024] [2023-01-28 00:46:10,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:46:10,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:46:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:46:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:46:10,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:46:10,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287313024] [2023-01-28 00:46:10,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287313024] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:46:10,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:46:10,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:46:10,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462871609] [2023-01-28 00:46:10,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:46:10,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:46:10,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:46:10,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:46:10,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:46:10,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-01-28 00:46:10,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 17 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:46:10,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-01-28 00:46:10,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:46:10,722 INFO L130 PetriNetUnfolder]: 33/81 cut-off events. [2023-01-28 00:46:10,722 INFO L131 PetriNetUnfolder]: For 86/90 co-relation queries the response was YES. [2023-01-28 00:46:10,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 81 events. 33/81 cut-off events. For 86/90 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 198 event pairs, 11 based on Foata normal form. 4/83 useless extension candidates. Maximal degree in co-relation 217. Up to 62 conditions per place. [2023-01-28 00:46:10,723 INFO L137 encePairwiseOnDemand]: 138/143 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2023-01-28 00:46:10,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 24 transitions, 145 flow [2023-01-28 00:46:10,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:46:10,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:46:10,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-01-28 00:46:10,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5687645687645687 [2023-01-28 00:46:10,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-01-28 00:46:10,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-01-28 00:46:10,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:46:10,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-01-28 00:46:10,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,726 INFO L175 Difference]: Start difference. First operand has 37 places, 17 transitions, 77 flow. Second operand 3 states and 244 transitions. [2023-01-28 00:46:10,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 24 transitions, 145 flow [2023-01-28 00:46:10,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 113 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-01-28 00:46:10,727 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 73 flow [2023-01-28 00:46:10,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-01-28 00:46:10,727 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-01-28 00:46:10,727 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 73 flow [2023-01-28 00:46:10,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:46:10,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:46:10,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 00:46:10,728 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:46:10,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:46:10,728 INFO L85 PathProgramCache]: Analyzing trace with hash 659536286, now seen corresponding path program 1 times [2023-01-28 00:46:10,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:46:10,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484537811] [2023-01-28 00:46:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:46:10,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:46:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:46:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:46:10,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:46:10,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484537811] [2023-01-28 00:46:10,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484537811] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:46:10,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:46:10,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:46:10,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434954616] [2023-01-28 00:46:10,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:46:10,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:46:10,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:46:10,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:46:10,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:46:10,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-01-28 00:46:10,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:46:10,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-01-28 00:46:10,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:46:10,854 INFO L130 PetriNetUnfolder]: 16/53 cut-off events. [2023-01-28 00:46:10,854 INFO L131 PetriNetUnfolder]: For 21/26 co-relation queries the response was YES. [2023-01-28 00:46:10,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 53 events. 16/53 cut-off events. For 21/26 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 3 based on Foata normal form. 7/59 useless extension candidates. Maximal degree in co-relation 151. Up to 26 conditions per place. [2023-01-28 00:46:10,854 INFO L137 encePairwiseOnDemand]: 138/143 looper letters, 16 selfloop transitions, 5 changer transitions 3/27 dead transitions. [2023-01-28 00:46:10,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 150 flow [2023-01-28 00:46:10,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:46:10,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:46:10,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-01-28 00:46:10,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611888111888111 [2023-01-28 00:46:10,855 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-01-28 00:46:10,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-01-28 00:46:10,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:46:10,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-01-28 00:46:10,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,857 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,857 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 73 flow. Second operand 4 states and 321 transitions. [2023-01-28 00:46:10,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 150 flow [2023-01-28 00:46:10,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 143 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 00:46:10,858 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 84 flow [2023-01-28 00:46:10,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-01-28 00:46:10,859 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-01-28 00:46:10,859 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 84 flow [2023-01-28 00:46:10,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:46:10,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:46:10,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 00:46:10,860 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:46:10,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:46:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1416706244, now seen corresponding path program 1 times [2023-01-28 00:46:10,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:46:10,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014536195] [2023-01-28 00:46:10,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:46:10,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:46:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:46:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:46:10,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:46:10,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014536195] [2023-01-28 00:46:10,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014536195] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:46:10,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:46:10,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 00:46:10,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745458056] [2023-01-28 00:46:10,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:46:10,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:46:10,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:46:10,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:46:10,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:46:10,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-01-28 00:46:10,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:10,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:46:10,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-01-28 00:46:10,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:46:11,008 INFO L130 PetriNetUnfolder]: 10/36 cut-off events. [2023-01-28 00:46:11,008 INFO L131 PetriNetUnfolder]: For 50/57 co-relation queries the response was YES. [2023-01-28 00:46:11,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 36 events. 10/36 cut-off events. For 50/57 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 2 based on Foata normal form. 6/41 useless extension candidates. Maximal degree in co-relation 113. Up to 14 conditions per place. [2023-01-28 00:46:11,009 INFO L137 encePairwiseOnDemand]: 138/143 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2023-01-28 00:46:11,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 23 transitions, 137 flow [2023-01-28 00:46:11,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:46:11,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:46:11,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 391 transitions. [2023-01-28 00:46:11,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468531468531469 [2023-01-28 00:46:11,010 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 391 transitions. [2023-01-28 00:46:11,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 391 transitions. [2023-01-28 00:46:11,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:46:11,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 391 transitions. [2023-01-28 00:46:11,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:11,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:11,012 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:11,012 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 84 flow. Second operand 5 states and 391 transitions. [2023-01-28 00:46:11,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 23 transitions, 137 flow [2023-01-28 00:46:11,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 23 transitions, 122 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 00:46:11,013 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2023-01-28 00:46:11,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2023-01-28 00:46:11,014 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-01-28 00:46:11,014 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2023-01-28 00:46:11,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:11,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 00:46:11,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 00:46:11,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 00:46:11,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 00:46:11,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 00:46:11,017 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:46:11,021 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:46:11,021 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:46:11,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:46:11 BasicIcfg [2023-01-28 00:46:11,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:46:11,024 INFO L158 Benchmark]: Toolchain (without parser) took 4781.51ms. Allocated memory was 337.6MB in the beginning and 406.8MB in the end (delta: 69.2MB). Free memory was 296.6MB in the beginning and 359.0MB in the end (delta: -62.4MB). Peak memory consumption was 8.2MB. Max. memory is 16.0GB. [2023-01-28 00:46:11,024 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory was 213.6MB in the beginning and 213.5MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:46:11,024 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.76ms. Allocated memory is still 337.6MB. Free memory was 296.3MB in the beginning and 276.3MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 00:46:11,025 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.81ms. Allocated memory is still 337.6MB. Free memory was 276.3MB in the beginning and 274.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:46:11,025 INFO L158 Benchmark]: Boogie Preprocessor took 15.20ms. Allocated memory is still 337.6MB. Free memory was 274.2MB in the beginning and 272.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:46:11,025 INFO L158 Benchmark]: RCFGBuilder took 264.87ms. Allocated memory is still 337.6MB. Free memory was 272.8MB in the beginning and 258.8MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 00:46:11,025 INFO L158 Benchmark]: TraceAbstraction took 4173.97ms. Allocated memory was 337.6MB in the beginning and 406.8MB in the end (delta: 69.2MB). Free memory was 258.5MB in the beginning and 359.0MB in the end (delta: -100.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:46:11,026 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory was 213.6MB in the beginning and 213.5MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 294.76ms. Allocated memory is still 337.6MB. Free memory was 296.3MB in the beginning and 276.3MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.81ms. Allocated memory is still 337.6MB. Free memory was 276.3MB in the beginning and 274.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 15.20ms. Allocated memory is still 337.6MB. Free memory was 274.2MB in the beginning and 272.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 264.87ms. Allocated memory is still 337.6MB. Free memory was 272.8MB in the beginning and 258.8MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4173.97ms. Allocated memory was 337.6MB in the beginning and 406.8MB in the end (delta: 69.2MB). Free memory was 258.5MB in the beginning and 359.0MB in the end (delta: -100.5MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 58 TotalNumberOfCompositions, 2098 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1269, independent: 1185, independent conditional: 0, independent unconditional: 1185, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 586, independent: 562, independent conditional: 0, independent unconditional: 562, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1269, independent: 623, independent conditional: 0, independent unconditional: 623, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 586, unknown conditional: 0, unknown unconditional: 586] , Statistics on independence cache: Total cache size (in pairs): 54, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, 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: 4.1s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 158 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 158 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 407 IncrementalHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 18 mSDtfsCounter, 407 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=3, InterpolantAutomatonStates: 44, 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, 1.2s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 343 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2023-01-28 00:46:11,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...