/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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:47:18,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:47:18,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:47:18,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:47:18,955 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 00:47:18,976 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:47:18,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:47:18,977 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:47:18,977 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:47:18,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:47:18,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:47:18,978 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:47:18,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:47:18,978 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:47:18,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:47:18,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:47:18,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:47:18,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:47:18,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:47:18,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:47:18,979 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:47:18,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:47:18,979 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:47:18,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:47:18,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:47:18,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:47:18,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:47:18,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:47:18,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:47:18,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:47:18,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:47:18,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:47:18,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:47:18,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:47:18,980 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:47:18,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:47:18,981 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:47:19,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:47:19,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:47:19,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:47:19,189 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:47:19,190 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:47:19,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 00:47:20,165 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:47:20,391 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:47:20,392 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 00:47:20,401 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53fb0d943/c712b71bc0bb47c69079dc6919afd0bb/FLAG6ea872414 [2023-01-28 00:47:20,410 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53fb0d943/c712b71bc0bb47c69079dc6919afd0bb [2023-01-28 00:47:20,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:47:20,412 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:47:20,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:47:20,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:47:20,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:47:20,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:47:20" (1/1) ... [2023-01-28 00:47:20,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1096dc0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:20, skipping insertion in model container [2023-01-28 00:47:20,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:47:20" (1/1) ... [2023-01-28 00:47:20,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:47:20,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:47:20,557 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-28 00:47:20,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:47:20,642 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:47:20,650 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-28 00:47:20,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:47:20,701 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:47:20,701 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:47:20,705 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:47:20,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:20 WrapperNode [2023-01-28 00:47:20,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:47:20,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:47:20,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:47:20,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:47:20,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:20" (1/1) ... [2023-01-28 00:47:20,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:20" (1/1) ... [2023-01-28 00:47:20,749 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-01-28 00:47:20,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:47:20,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:47:20,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:47:20,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:47:20,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:20" (1/1) ... [2023-01-28 00:47:20,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:20" (1/1) ... [2023-01-28 00:47:20,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:20" (1/1) ... [2023-01-28 00:47:20,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:20" (1/1) ... [2023-01-28 00:47:20,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:20" (1/1) ... [2023-01-28 00:47:20,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:20" (1/1) ... [2023-01-28 00:47:20,777 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:20" (1/1) ... [2023-01-28 00:47:20,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:20" (1/1) ... [2023-01-28 00:47:20,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:47:20,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:47:20,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:47:20,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:47:20,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:20" (1/1) ... [2023-01-28 00:47:20,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:47:20,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:47:20,807 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 00:47:20,820 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 00:47:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:47:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:47:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:47:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:47:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:47:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 00:47:20,831 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 00:47:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 00:47:20,833 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 00:47:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 00:47:20,833 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 00:47:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:47:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:47:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:47:20,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:47:20,834 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 00:47:20,977 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:47:20,978 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:47:21,116 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:47:21,120 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:47:21,121 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:47:21,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:47:21 BoogieIcfgContainer [2023-01-28 00:47:21,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:47:21,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:47:21,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:47:21,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:47:21,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:47:20" (1/3) ... [2023-01-28 00:47:21,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58afe3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:47:21, skipping insertion in model container [2023-01-28 00:47:21,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:20" (2/3) ... [2023-01-28 00:47:21,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58afe3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:47:21, skipping insertion in model container [2023-01-28 00:47:21,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:47:21" (3/3) ... [2023-01-28 00:47:21,127 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 00:47:21,138 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:47:21,138 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 00:47:21,138 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:47:21,194 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 00:47:21,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-01-28 00:47:21,244 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2023-01-28 00:47:21,244 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:47:21,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 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. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-01-28 00:47:21,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-01-28 00:47:21,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-01-28 00:47:21,252 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:47:21,258 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-28 00:47:21,260 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-28 00:47:21,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-01-28 00:47:21,275 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2023-01-28 00:47:21,275 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:47:21,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 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. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-01-28 00:47:21,276 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-28 00:47:22,788 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-01-28 00:47:22,788 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-01-28 00:47:22,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:47:22,802 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;@4a656eef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:47:22,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 00:47:22,805 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-01-28 00:47:22,805 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:47:22,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:22,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:22,806 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 00:47:22,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:22,809 INFO L85 PathProgramCache]: Analyzing trace with hash -856294997, now seen corresponding path program 1 times [2023-01-28 00:47:22,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:22,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757356362] [2023-01-28 00:47:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:22,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:23,211 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 00:47:23,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:23,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757356362] [2023-01-28 00:47:23,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757356362] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:23,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:23,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:47:23,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204922497] [2023-01-28 00:47:23,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:23,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:47:23,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:23,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:47:23,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:47:23,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 00:47:23,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 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 00:47:23,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:23,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 00:47:23,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:23,392 INFO L130 PetriNetUnfolder]: 562/908 cut-off events. [2023-01-28 00:47:23,392 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 00:47:23,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 908 events. 562/908 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3966 event pairs, 238 based on Foata normal form. 53/961 useless extension candidates. Maximal degree in co-relation 1862. Up to 464 conditions per place. [2023-01-28 00:47:23,401 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-01-28 00:47:23,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-01-28 00:47:23,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:47:23,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:47:23,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-01-28 00:47:23,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5587529976019184 [2023-01-28 00:47:23,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-01-28 00:47:23,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-01-28 00:47:23,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:23,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-01-28 00:47:23,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:23,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 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 00:47:23,426 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 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 00:47:23,427 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 233 transitions. [2023-01-28 00:47:23,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-01-28 00:47:23,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 00:47:23,432 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 94 flow [2023-01-28 00:47:23,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-01-28 00:47:23,440 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-01-28 00:47:23,440 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2023-01-28 00:47:23,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 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 00:47:23,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:23,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:23,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:47:23,441 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 00:47:23,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:23,444 INFO L85 PathProgramCache]: Analyzing trace with hash -775341748, now seen corresponding path program 1 times [2023-01-28 00:47:23,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:23,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782616402] [2023-01-28 00:47:23,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:23,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:23,670 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 00:47:23,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:23,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782616402] [2023-01-28 00:47:23,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782616402] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:23,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:23,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:47:23,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055448651] [2023-01-28 00:47:23,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:23,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:47:23,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:23,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:47:23,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:47:23,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 00:47:23,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 00:47:23,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:23,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 00:47:23,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:23,759 INFO L130 PetriNetUnfolder]: 521/845 cut-off events. [2023-01-28 00:47:23,759 INFO L131 PetriNetUnfolder]: For 311/311 co-relation queries the response was YES. [2023-01-28 00:47:23,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2414 conditions, 845 events. 521/845 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3641 event pairs, 63 based on Foata normal form. 7/852 useless extension candidates. Maximal degree in co-relation 2402. Up to 390 conditions per place. [2023-01-28 00:47:23,764 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 34 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2023-01-28 00:47:23,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 244 flow [2023-01-28 00:47:23,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:47:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:47:23,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2023-01-28 00:47:23,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5503597122302158 [2023-01-28 00:47:23,767 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 306 transitions. [2023-01-28 00:47:23,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 306 transitions. [2023-01-28 00:47:23,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:23,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 306 transitions. [2023-01-28 00:47:23,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 00:47:23,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 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 00:47:23,771 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 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 00:47:23,771 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 306 transitions. [2023-01-28 00:47:23,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 244 flow [2023-01-28 00:47:23,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:47:23,777 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 138 flow [2023-01-28 00:47:23,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-01-28 00:47:23,778 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-01-28 00:47:23,778 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 138 flow [2023-01-28 00:47:23,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 00:47:23,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:23,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:23,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:47:23,779 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 00:47:23,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:23,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1734208010, now seen corresponding path program 1 times [2023-01-28 00:47:23,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:23,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158563913] [2023-01-28 00:47:23,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:23,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:23,903 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 00:47:23,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:23,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158563913] [2023-01-28 00:47:23,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158563913] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:23,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:23,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:47:23,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726874281] [2023-01-28 00:47:23,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:23,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:47:23,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:23,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:47:23,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:47:23,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 00:47:23,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:23,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:23,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 00:47:23,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:23,982 INFO L130 PetriNetUnfolder]: 493/802 cut-off events. [2023-01-28 00:47:23,982 INFO L131 PetriNetUnfolder]: For 762/762 co-relation queries the response was YES. [2023-01-28 00:47:23,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2563 conditions, 802 events. 493/802 cut-off events. For 762/762 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3246 event pairs, 104 based on Foata normal form. 9/811 useless extension candidates. Maximal degree in co-relation 2548. Up to 308 conditions per place. [2023-01-28 00:47:23,987 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 32 selfloop transitions, 12 changer transitions 0/44 dead transitions. [2023-01-28 00:47:23,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 304 flow [2023-01-28 00:47:23,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:47:23,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:47:23,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2023-01-28 00:47:23,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5431654676258992 [2023-01-28 00:47:23,989 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 302 transitions. [2023-01-28 00:47:23,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 302 transitions. [2023-01-28 00:47:23,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:23,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 302 transitions. [2023-01-28 00:47:23,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 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 00:47:23,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 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 00:47:23,990 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 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 00:47:23,990 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 138 flow. Second operand 4 states and 302 transitions. [2023-01-28 00:47:23,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 304 flow [2023-01-28 00:47:23,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:47:23,993 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 240 flow [2023-01-28 00:47:23,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-01-28 00:47:23,994 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-01-28 00:47:23,996 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 240 flow [2023-01-28 00:47:23,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:23,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:23,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:23,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:47:23,997 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 00:47:23,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:23,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1759548929, now seen corresponding path program 1 times [2023-01-28 00:47:23,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:23,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613544886] [2023-01-28 00:47:23,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:23,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:24,103 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 00:47:24,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:24,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613544886] [2023-01-28 00:47:24,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613544886] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:24,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:24,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:47:24,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693543261] [2023-01-28 00:47:24,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:24,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:47:24,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:24,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:47:24,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:47:24,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 00:47:24,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:24,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:24,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 00:47:24,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:24,195 INFO L130 PetriNetUnfolder]: 478/778 cut-off events. [2023-01-28 00:47:24,195 INFO L131 PetriNetUnfolder]: For 1350/1350 co-relation queries the response was YES. [2023-01-28 00:47:24,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2907 conditions, 778 events. 478/778 cut-off events. For 1350/1350 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3185 event pairs, 67 based on Foata normal form. 3/781 useless extension candidates. Maximal degree in co-relation 2888. Up to 388 conditions per place. [2023-01-28 00:47:24,199 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 38 selfloop transitions, 22 changer transitions 0/60 dead transitions. [2023-01-28 00:47:24,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 60 transitions, 512 flow [2023-01-28 00:47:24,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:47:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:47:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-01-28 00:47:24,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5593525179856115 [2023-01-28 00:47:24,202 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-01-28 00:47:24,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-01-28 00:47:24,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:24,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-01-28 00:47:24,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:24,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 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 00:47:24,206 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 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 00:47:24,207 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 240 flow. Second operand 4 states and 311 transitions. [2023-01-28 00:47:24,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 60 transitions, 512 flow [2023-01-28 00:47:24,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:47:24,212 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 435 flow [2023-01-28 00:47:24,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=435, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-01-28 00:47:24,213 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-01-28 00:47:24,214 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 435 flow [2023-01-28 00:47:24,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:24,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:24,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:24,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:47:24,215 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 00:47:24,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:24,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2074098976, now seen corresponding path program 1 times [2023-01-28 00:47:24,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:24,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385745152] [2023-01-28 00:47:24,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:24,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:24,328 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 00:47:24,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:24,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385745152] [2023-01-28 00:47:24,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385745152] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:24,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:24,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:47:24,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813028089] [2023-01-28 00:47:24,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:24,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:47:24,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:24,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:47:24,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:47:24,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 00:47:24,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 435 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 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 00:47:24,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:24,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 00:47:24,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:24,407 INFO L130 PetriNetUnfolder]: 455/742 cut-off events. [2023-01-28 00:47:24,408 INFO L131 PetriNetUnfolder]: For 2117/2117 co-relation queries the response was YES. [2023-01-28 00:47:24,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3209 conditions, 742 events. 455/742 cut-off events. For 2117/2117 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3053 event pairs, 87 based on Foata normal form. 5/747 useless extension candidates. Maximal degree in co-relation 3186. Up to 319 conditions per place. [2023-01-28 00:47:24,411 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 42 selfloop transitions, 24 changer transitions 0/66 dead transitions. [2023-01-28 00:47:24,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 717 flow [2023-01-28 00:47:24,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:47:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:47:24,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 308 transitions. [2023-01-28 00:47:24,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539568345323741 [2023-01-28 00:47:24,413 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 308 transitions. [2023-01-28 00:47:24,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 308 transitions. [2023-01-28 00:47:24,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:24,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 308 transitions. [2023-01-28 00:47:24,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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 00:47:24,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 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 00:47:24,416 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 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 00:47:24,416 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 435 flow. Second operand 4 states and 308 transitions. [2023-01-28 00:47:24,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 717 flow [2023-01-28 00:47:24,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 717 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 00:47:24,421 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 638 flow [2023-01-28 00:47:24,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=638, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2023-01-28 00:47:24,423 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 21 predicate places. [2023-01-28 00:47:24,423 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 638 flow [2023-01-28 00:47:24,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 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 00:47:24,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:24,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:24,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:47:24,424 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 00:47:24,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:24,424 INFO L85 PathProgramCache]: Analyzing trace with hash 127420696, now seen corresponding path program 1 times [2023-01-28 00:47:24,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:24,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092877555] [2023-01-28 00:47:24,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:24,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:24,550 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 00:47:24,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:24,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092877555] [2023-01-28 00:47:24,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092877555] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:24,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:24,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:47:24,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946108335] [2023-01-28 00:47:24,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:24,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:47:24,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:24,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:47:24,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:47:24,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-28 00:47:24,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 638 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 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 00:47:24,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:24,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-28 00:47:24,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:24,632 INFO L130 PetriNetUnfolder]: 320/600 cut-off events. [2023-01-28 00:47:24,632 INFO L131 PetriNetUnfolder]: For 3944/4015 co-relation queries the response was YES. [2023-01-28 00:47:24,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 600 events. 320/600 cut-off events. For 3944/4015 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3112 event pairs, 44 based on Foata normal form. 71/663 useless extension candidates. Maximal degree in co-relation 2724. Up to 296 conditions per place. [2023-01-28 00:47:24,636 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 73 selfloop transitions, 8 changer transitions 2/103 dead transitions. [2023-01-28 00:47:24,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 103 transitions, 1424 flow [2023-01-28 00:47:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:47:24,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:47:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2023-01-28 00:47:24,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5669064748201439 [2023-01-28 00:47:24,638 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2023-01-28 00:47:24,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2023-01-28 00:47:24,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:24,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2023-01-28 00:47:24,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 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 00:47:24,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 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 00:47:24,640 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 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 00:47:24,640 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 638 flow. Second operand 5 states and 394 transitions. [2023-01-28 00:47:24,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 103 transitions, 1424 flow [2023-01-28 00:47:24,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 103 transitions, 1407 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:47:24,645 INFO L231 Difference]: Finished difference. Result has 54 places, 56 transitions, 689 flow [2023-01-28 00:47:24,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=689, PETRI_PLACES=54, PETRI_TRANSITIONS=56} [2023-01-28 00:47:24,646 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 27 predicate places. [2023-01-28 00:47:24,646 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 56 transitions, 689 flow [2023-01-28 00:47:24,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 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 00:47:24,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:24,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:24,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 00:47:24,647 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 00:47:24,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:24,647 INFO L85 PathProgramCache]: Analyzing trace with hash -328862597, now seen corresponding path program 1 times [2023-01-28 00:47:24,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:24,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673983139] [2023-01-28 00:47:24,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:24,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:24,773 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 00:47:24,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:24,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673983139] [2023-01-28 00:47:24,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673983139] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:24,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:24,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:47:24,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087732146] [2023-01-28 00:47:24,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:24,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:47:24,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:24,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:47:24,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:47:24,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-28 00:47:24,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 56 transitions, 689 flow. Second operand has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 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 00:47:24,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:24,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-28 00:47:24,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:24,886 INFO L130 PetriNetUnfolder]: 288/564 cut-off events. [2023-01-28 00:47:24,886 INFO L131 PetriNetUnfolder]: For 4222/4420 co-relation queries the response was YES. [2023-01-28 00:47:24,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3046 conditions, 564 events. 288/564 cut-off events. For 4222/4420 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3030 event pairs, 15 based on Foata normal form. 147/703 useless extension candidates. Maximal degree in co-relation 3013. Up to 245 conditions per place. [2023-01-28 00:47:24,890 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 79 selfloop transitions, 15 changer transitions 8/122 dead transitions. [2023-01-28 00:47:24,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 122 transitions, 1673 flow [2023-01-28 00:47:24,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 00:47:24,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 00:47:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 551 transitions. [2023-01-28 00:47:24,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.566289825282631 [2023-01-28 00:47:24,892 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 551 transitions. [2023-01-28 00:47:24,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 551 transitions. [2023-01-28 00:47:24,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:24,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 551 transitions. [2023-01-28 00:47:24,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.71428571428571) internal successors, (551), 7 states have internal predecessors, (551), 0 states have call successors, (0), 0 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 00:47:24,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 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 00:47:24,895 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 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 00:47:24,896 INFO L175 Difference]: Start difference. First operand has 54 places, 56 transitions, 689 flow. Second operand 7 states and 551 transitions. [2023-01-28 00:47:24,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 122 transitions, 1673 flow [2023-01-28 00:47:24,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 122 transitions, 1669 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:47:24,902 INFO L231 Difference]: Finished difference. Result has 62 places, 63 transitions, 784 flow [2023-01-28 00:47:24,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=784, PETRI_PLACES=62, PETRI_TRANSITIONS=63} [2023-01-28 00:47:24,903 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 35 predicate places. [2023-01-28 00:47:24,903 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 63 transitions, 784 flow [2023-01-28 00:47:24,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 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 00:47:24,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:24,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:24,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 00:47:24,904 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 00:47:24,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:24,904 INFO L85 PathProgramCache]: Analyzing trace with hash 202149215, now seen corresponding path program 1 times [2023-01-28 00:47:24,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:24,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363319093] [2023-01-28 00:47:24,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:24,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:25,009 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 00:47:25,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:25,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363319093] [2023-01-28 00:47:25,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363319093] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:25,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:25,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:47:25,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176092011] [2023-01-28 00:47:25,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:25,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:47:25,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:25,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:47:25,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:47:25,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 00:47:25,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 63 transitions, 784 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 00:47:25,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:25,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 00:47:25,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:25,122 INFO L130 PetriNetUnfolder]: 512/936 cut-off events. [2023-01-28 00:47:25,122 INFO L131 PetriNetUnfolder]: For 7786/7786 co-relation queries the response was YES. [2023-01-28 00:47:25,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5975 conditions, 936 events. 512/936 cut-off events. For 7786/7786 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4746 event pairs, 87 based on Foata normal form. 6/942 useless extension candidates. Maximal degree in co-relation 5938. Up to 390 conditions per place. [2023-01-28 00:47:25,128 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 41 selfloop transitions, 31 changer transitions 35/107 dead transitions. [2023-01-28 00:47:25,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 107 transitions, 1365 flow [2023-01-28 00:47:25,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:47:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:47:25,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 308 transitions. [2023-01-28 00:47:25,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539568345323741 [2023-01-28 00:47:25,130 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 308 transitions. [2023-01-28 00:47:25,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 308 transitions. [2023-01-28 00:47:25,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:25,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 308 transitions. [2023-01-28 00:47:25,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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 00:47:25,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 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 00:47:25,132 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 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 00:47:25,132 INFO L175 Difference]: Start difference. First operand has 62 places, 63 transitions, 784 flow. Second operand 4 states and 308 transitions. [2023-01-28 00:47:25,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 107 transitions, 1365 flow [2023-01-28 00:47:25,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 107 transitions, 1262 flow, removed 39 selfloop flow, removed 2 redundant places. [2023-01-28 00:47:25,149 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 770 flow [2023-01-28 00:47:25,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=770, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2023-01-28 00:47:25,151 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 38 predicate places. [2023-01-28 00:47:25,151 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 770 flow [2023-01-28 00:47:25,151 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 00:47:25,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:25,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:25,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 00:47:25,151 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 00:47:25,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:25,152 INFO L85 PathProgramCache]: Analyzing trace with hash 504430524, now seen corresponding path program 1 times [2023-01-28 00:47:25,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:25,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354979448] [2023-01-28 00:47:25,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:25,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:25,291 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 00:47:25,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:25,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354979448] [2023-01-28 00:47:25,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354979448] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:25,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:25,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 00:47:25,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592995614] [2023-01-28 00:47:25,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:25,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 00:47:25,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:25,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 00:47:25,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 00:47:25,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-28 00:47:25,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 770 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 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 00:47:25,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:25,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-28 00:47:25,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:25,362 INFO L130 PetriNetUnfolder]: 136/290 cut-off events. [2023-01-28 00:47:25,362 INFO L131 PetriNetUnfolder]: For 2387/2445 co-relation queries the response was YES. [2023-01-28 00:47:25,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1747 conditions, 290 events. 136/290 cut-off events. For 2387/2445 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1274 event pairs, 12 based on Foata normal form. 38/319 useless extension candidates. Maximal degree in co-relation 1710. Up to 88 conditions per place. [2023-01-28 00:47:25,364 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 19 selfloop transitions, 10 changer transitions 47/84 dead transitions. [2023-01-28 00:47:25,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 84 transitions, 1274 flow [2023-01-28 00:47:25,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 00:47:25,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 00:47:25,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 538 transitions. [2023-01-28 00:47:25,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5529290853031861 [2023-01-28 00:47:25,366 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 538 transitions. [2023-01-28 00:47:25,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 538 transitions. [2023-01-28 00:47:25,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:25,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 538 transitions. [2023-01-28 00:47:25,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 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 00:47:25,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 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 00:47:25,368 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 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 00:47:25,368 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 770 flow. Second operand 7 states and 538 transitions. [2023-01-28 00:47:25,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 84 transitions, 1274 flow [2023-01-28 00:47:25,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 84 transitions, 1248 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-01-28 00:47:25,376 INFO L231 Difference]: Finished difference. Result has 67 places, 32 transitions, 411 flow [2023-01-28 00:47:25,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=411, PETRI_PLACES=67, PETRI_TRANSITIONS=32} [2023-01-28 00:47:25,376 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 40 predicate places. [2023-01-28 00:47:25,376 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 32 transitions, 411 flow [2023-01-28 00:47:25,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 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 00:47:25,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:25,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:25,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 00:47:25,377 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 00:47:25,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:25,377 INFO L85 PathProgramCache]: Analyzing trace with hash -422245089, now seen corresponding path program 1 times [2023-01-28 00:47:25,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:25,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570442814] [2023-01-28 00:47:25,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:25,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:25,489 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 00:47:25,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:25,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570442814] [2023-01-28 00:47:25,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570442814] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:25,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:25,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:47:25,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979037080] [2023-01-28 00:47:25,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:25,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:47:25,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:25,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:47:25,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:47:25,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 00:47:25,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 32 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 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 00:47:25,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:25,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 00:47:25,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:25,530 INFO L130 PetriNetUnfolder]: 42/109 cut-off events. [2023-01-28 00:47:25,530 INFO L131 PetriNetUnfolder]: For 736/736 co-relation queries the response was YES. [2023-01-28 00:47:25,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 109 events. 42/109 cut-off events. For 736/736 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 334 event pairs, 3 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 755. Up to 61 conditions per place. [2023-01-28 00:47:25,531 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 22 selfloop transitions, 7 changer transitions 26/55 dead transitions. [2023-01-28 00:47:25,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 55 transitions, 738 flow [2023-01-28 00:47:25,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:47:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:47:25,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 371 transitions. [2023-01-28 00:47:25,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338129496402878 [2023-01-28 00:47:25,533 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 371 transitions. [2023-01-28 00:47:25,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 371 transitions. [2023-01-28 00:47:25,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:25,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 371 transitions. [2023-01-28 00:47:25,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 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 00:47:25,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 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 00:47:25,535 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 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 00:47:25,536 INFO L175 Difference]: Start difference. First operand has 67 places, 32 transitions, 411 flow. Second operand 5 states and 371 transitions. [2023-01-28 00:47:25,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 55 transitions, 738 flow [2023-01-28 00:47:25,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 55 transitions, 527 flow, removed 26 selfloop flow, removed 21 redundant places. [2023-01-28 00:47:25,539 INFO L231 Difference]: Finished difference. Result has 49 places, 23 transitions, 178 flow [2023-01-28 00:47:25,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=49, PETRI_TRANSITIONS=23} [2023-01-28 00:47:25,540 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-01-28 00:47:25,540 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 23 transitions, 178 flow [2023-01-28 00:47:25,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 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 00:47:25,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:25,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:25,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 00:47:25,541 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:47:25,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:25,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1969732305, now seen corresponding path program 2 times [2023-01-28 00:47:25,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:25,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111398746] [2023-01-28 00:47:25,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:25,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:25,643 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 00:47:25,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:25,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111398746] [2023-01-28 00:47:25,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111398746] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:25,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:25,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 00:47:25,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137081056] [2023-01-28 00:47:25,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:25,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:47:25,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:25,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:47:25,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:47:25,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 00:47:25,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 23 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 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 00:47:25,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:25,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 00:47:25,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:25,669 INFO L130 PetriNetUnfolder]: 13/40 cut-off events. [2023-01-28 00:47:25,670 INFO L131 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2023-01-28 00:47:25,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 40 events. 13/40 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 1 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 196. Up to 17 conditions per place. [2023-01-28 00:47:25,670 INFO L137 encePairwiseOnDemand]: 134/139 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-01-28 00:47:25,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 29 transitions, 268 flow [2023-01-28 00:47:25,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 00:47:25,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 00:47:25,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 424 transitions. [2023-01-28 00:47:25,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083932853717026 [2023-01-28 00:47:25,672 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 424 transitions. [2023-01-28 00:47:25,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 424 transitions. [2023-01-28 00:47:25,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:25,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 424 transitions. [2023-01-28 00:47:25,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 0 states have call successors, (0), 0 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 00:47:25,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 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 00:47:25,674 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 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 00:47:25,674 INFO L175 Difference]: Start difference. First operand has 49 places, 23 transitions, 178 flow. Second operand 6 states and 424 transitions. [2023-01-28 00:47:25,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 29 transitions, 268 flow [2023-01-28 00:47:25,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 190 flow, removed 3 selfloop flow, removed 17 redundant places. [2023-01-28 00:47:25,675 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-01-28 00:47:25,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-01-28 00:47:25,675 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-01-28 00:47:25,675 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-01-28 00:47:25,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 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 00:47:25,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 00:47:25,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 00:47:25,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 00:47:25,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 00:47:25,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 00:47:25,678 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:25,681 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:47:25,681 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:47:25,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:47:25 BasicIcfg [2023-01-28 00:47:25,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:47:25,684 INFO L158 Benchmark]: Toolchain (without parser) took 5272.19ms. Allocated memory was 364.9MB in the beginning and 438.3MB in the end (delta: 73.4MB). Free memory was 333.3MB in the beginning and 369.2MB in the end (delta: -35.9MB). Peak memory consumption was 40.3MB. Max. memory is 16.0GB. [2023-01-28 00:47:25,684 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:47:25,685 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.30ms. Allocated memory is still 364.9MB. Free memory was 333.3MB in the beginning and 313.2MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 00:47:25,685 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.04ms. Allocated memory is still 364.9MB. Free memory was 313.2MB in the beginning and 311.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:47:25,685 INFO L158 Benchmark]: Boogie Preprocessor took 29.26ms. Allocated memory is still 364.9MB. Free memory was 311.0MB in the beginning and 309.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:47:25,685 INFO L158 Benchmark]: RCFGBuilder took 342.15ms. Allocated memory is still 364.9MB. Free memory was 309.4MB in the beginning and 295.9MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 00:47:25,685 INFO L158 Benchmark]: TraceAbstraction took 4560.60ms. Allocated memory was 364.9MB in the beginning and 438.3MB in the end (delta: 73.4MB). Free memory was 295.1MB in the beginning and 369.2MB in the end (delta: -74.0MB). Peak memory consumption was 2.5MB. Max. memory is 16.0GB. [2023-01-28 00:47:25,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 293.30ms. Allocated memory is still 364.9MB. Free memory was 333.3MB in the beginning and 313.2MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.04ms. Allocated memory is still 364.9MB. Free memory was 313.2MB in the beginning and 311.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.26ms. Allocated memory is still 364.9MB. Free memory was 311.0MB in the beginning and 309.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 342.15ms. Allocated memory is still 364.9MB. Free memory was 309.4MB in the beginning and 295.9MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 4560.60ms. Allocated memory was 364.9MB in the beginning and 438.3MB in the end (delta: 73.4MB). Free memory was 295.1MB in the beginning and 369.2MB in the end (delta: -74.0MB). Peak memory consumption was 2.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1034, independent: 957, independent conditional: 0, independent unconditional: 957, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 558, independent: 537, independent conditional: 0, independent unconditional: 537, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1034, independent: 420, independent conditional: 0, independent unconditional: 420, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 558, unknown conditional: 0, unknown unconditional: 558] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, 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, 107 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: 4.5s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 503 IncrementalHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 27 mSDtfsCounter, 503 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=784occurred in iteration=7, InterpolantAutomatonStates: 53, 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, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 655 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 00:47:25,702 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...