/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 03:57:53,881 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 03:57:53,970 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 03:57:53,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 03:57:53,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 03:57:54,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 03:57:54,009 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 03:57:54,010 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 03:57:54,011 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 03:57:54,014 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 03:57:54,014 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 03:57:54,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 03:57:54,015 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 03:57:54,016 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 03:57:54,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 03:57:54,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 03:57:54,017 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 03:57:54,017 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 03:57:54,017 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 03:57:54,017 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 03:57:54,017 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 03:57:54,018 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 03:57:54,018 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 03:57:54,019 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 03:57:54,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 03:57:54,019 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 03:57:54,020 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 03:57:54,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 03:57:54,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 03:57:54,021 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 03:57:54,022 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 03:57:54,022 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 03:57:54,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 03:57:54,022 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 03:57:54,022 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 03:57:54,023 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 03:57:54,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 03:57:54,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 03:57:54,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 03:57:54,375 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 03:57:54,375 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 03:57:54,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-08-24 03:57:55,644 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 03:57:55,862 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 03:57:55,863 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-08-24 03:57:55,871 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dbe8f9a3/1c2d9db977674d4cbad627928a93febc/FLAG9f5c4c825 [2023-08-24 03:57:55,884 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dbe8f9a3/1c2d9db977674d4cbad627928a93febc [2023-08-24 03:57:55,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 03:57:55,887 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 03:57:55,888 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 03:57:55,888 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 03:57:55,891 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 03:57:55,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 03:57:55" (1/1) ... [2023-08-24 03:57:55,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b308d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:57:55, skipping insertion in model container [2023-08-24 03:57:55,892 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 03:57:55" (1/1) ... [2023-08-24 03:57:55,912 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 03:57:56,086 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c[3373,3386] [2023-08-24 03:57:56,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 03:57:56,095 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 03:57:56,115 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c[3373,3386] [2023-08-24 03:57:56,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 03:57:56,123 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 03:57:56,123 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 03:57:56,129 INFO L206 MainTranslator]: Completed translation [2023-08-24 03:57:56,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:57:56 WrapperNode [2023-08-24 03:57:56,130 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 03:57:56,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 03:57:56,131 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 03:57:56,131 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 03:57:56,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:57:56" (1/1) ... [2023-08-24 03:57:56,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:57:56" (1/1) ... [2023-08-24 03:57:56,160 INFO L138 Inliner]: procedures = 24, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2023-08-24 03:57:56,161 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 03:57:56,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 03:57:56,162 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 03:57:56,162 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 03:57:56,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:57:56" (1/1) ... [2023-08-24 03:57:56,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:57:56" (1/1) ... [2023-08-24 03:57:56,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:57:56" (1/1) ... [2023-08-24 03:57:56,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:57:56" (1/1) ... [2023-08-24 03:57:56,178 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:57:56" (1/1) ... [2023-08-24 03:57:56,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:57:56" (1/1) ... [2023-08-24 03:57:56,183 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:57:56" (1/1) ... [2023-08-24 03:57:56,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:57:56" (1/1) ... [2023-08-24 03:57:56,187 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 03:57:56,187 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 03:57:56,188 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 03:57:56,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 03:57:56,188 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:57:56" (1/1) ... [2023-08-24 03:57:56,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 03:57:56,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:57:56,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 03:57:56,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 03:57:56,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 03:57:56,283 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 03:57:56,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 03:57:56,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 03:57:56,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 03:57:56,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 03:57:56,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 03:57:56,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-24 03:57:56,285 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-24 03:57:56,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 03:57:56,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 03:57:56,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 03:57:56,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 03:57:56,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 03:57:56,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 03:57:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 03:57:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 03:57:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 03:57:56,288 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 03:57:56,368 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 03:57:56,370 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 03:57:56,724 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 03:57:56,769 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 03:57:56,770 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-24 03:57:56,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 03:57:56 BoogieIcfgContainer [2023-08-24 03:57:56,772 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 03:57:56,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 03:57:56,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 03:57:56,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 03:57:56,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 03:57:55" (1/3) ... [2023-08-24 03:57:56,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f209b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 03:57:56, skipping insertion in model container [2023-08-24 03:57:56,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:57:56" (2/3) ... [2023-08-24 03:57:56,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f209b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 03:57:56, skipping insertion in model container [2023-08-24 03:57:56,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 03:57:56" (3/3) ... [2023-08-24 03:57:56,779 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2023-08-24 03:57:56,792 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 03:57:56,792 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 03:57:56,793 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 03:57:56,861 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 03:57:56,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 133 transitions, 298 flow [2023-08-24 03:57:56,967 INFO L124 PetriNetUnfolderBase]: 10/129 cut-off events. [2023-08-24 03:57:56,967 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 03:57:56,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 129 events. 10/129 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-08-24 03:57:56,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 133 transitions, 298 flow [2023-08-24 03:57:56,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 117 transitions, 258 flow [2023-08-24 03:57:56,981 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 03:57:56,989 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 117 transitions, 258 flow [2023-08-24 03:57:56,991 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 117 transitions, 258 flow [2023-08-24 03:57:56,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 117 transitions, 258 flow [2023-08-24 03:57:57,034 INFO L124 PetriNetUnfolderBase]: 10/117 cut-off events. [2023-08-24 03:57:57,034 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 03:57:57,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 117 events. 10/117 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-08-24 03:57:57,039 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-08-24 03:58:00,484 INFO L134 LiptonReduction]: Checked pairs total: 3486 [2023-08-24 03:58:00,484 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-08-24 03:58:00,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 03:58:00,501 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;@618db2dc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 03:58:00,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-24 03:58:00,512 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 03:58:00,512 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2023-08-24 03:58:00,512 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 03:58:00,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:58:00,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:58:00,513 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 2 more)] === [2023-08-24 03:58:00,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:58:00,518 INFO L85 PathProgramCache]: Analyzing trace with hash -964385068, now seen corresponding path program 1 times [2023-08-24 03:58:00,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:58:00,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137451493] [2023-08-24 03:58:00,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:58:00,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:58:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:58:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:58:01,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:58:01,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137451493] [2023-08-24 03:58:01,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137451493] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 03:58:01,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 03:58:01,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 03:58:01,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574678764] [2023-08-24 03:58:01,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:58:01,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 03:58:01,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:58:01,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 03:58:01,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 03:58:01,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 228 [2023-08-24 03:58:01,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:01,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:58:01,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 228 [2023-08-24 03:58:01,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:58:01,519 INFO L124 PetriNetUnfolderBase]: 1537/2184 cut-off events. [2023-08-24 03:58:01,520 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2023-08-24 03:58:01,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4286 conditions, 2184 events. 1537/2184 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9237 event pairs, 141 based on Foata normal form. 1/1356 useless extension candidates. Maximal degree in co-relation 3271. Up to 1733 conditions per place. [2023-08-24 03:58:01,537 INFO L140 encePairwiseOnDemand]: 222/228 looper letters, 41 selfloop transitions, 5 changer transitions 1/55 dead transitions. [2023-08-24 03:58:01,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 249 flow [2023-08-24 03:58:01,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 03:58:01,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 03:58:01,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-08-24 03:58:01,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2023-08-24 03:58:01,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-08-24 03:58:01,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-08-24 03:58:01,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:58:01,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-08-24 03:58:01,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:01,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:01,563 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:01,564 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 90 flow. Second operand 3 states and 372 transitions. [2023-08-24 03:58:01,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 249 flow [2023-08-24 03:58:01,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 55 transitions, 219 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-24 03:58:01,571 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 107 flow [2023-08-24 03:58:01,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-08-24 03:58:01,575 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-08-24 03:58:01,576 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 107 flow [2023-08-24 03:58:01,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:01,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:58:01,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:58:01,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 03:58:01,577 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 2 more)] === [2023-08-24 03:58:01,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:58:01,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1878883062, now seen corresponding path program 1 times [2023-08-24 03:58:01,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:58:01,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562030288] [2023-08-24 03:58:01,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:58:01,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:58:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:58:01,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:58:01,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:58:01,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562030288] [2023-08-24 03:58:01,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562030288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 03:58:01,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 03:58:01,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 03:58:01,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641360303] [2023-08-24 03:58:01,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:58:01,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 03:58:01,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:58:01,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 03:58:01,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 03:58:01,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 228 [2023-08-24 03:58:01,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:01,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:58:01,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 228 [2023-08-24 03:58:01,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:58:02,430 INFO L124 PetriNetUnfolderBase]: 3101/4276 cut-off events. [2023-08-24 03:58:02,430 INFO L125 PetriNetUnfolderBase]: For 1157/1169 co-relation queries the response was YES. [2023-08-24 03:58:02,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10117 conditions, 4276 events. 3101/4276 cut-off events. For 1157/1169 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 20379 event pairs, 700 based on Foata normal form. 40/4192 useless extension candidates. Maximal degree in co-relation 2568. Up to 1880 conditions per place. [2023-08-24 03:58:02,460 INFO L140 encePairwiseOnDemand]: 221/228 looper letters, 88 selfloop transitions, 9 changer transitions 0/101 dead transitions. [2023-08-24 03:58:02,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 101 transitions, 490 flow [2023-08-24 03:58:02,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 03:58:02,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 03:58:02,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 601 transitions. [2023-08-24 03:58:02,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271929824561403 [2023-08-24 03:58:02,464 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 601 transitions. [2023-08-24 03:58:02,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 601 transitions. [2023-08-24 03:58:02,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:58:02,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 601 transitions. [2023-08-24 03:58:02,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:02,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:02,469 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:02,469 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 107 flow. Second operand 5 states and 601 transitions. [2023-08-24 03:58:02,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 101 transitions, 490 flow [2023-08-24 03:58:02,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 101 transitions, 477 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 03:58:02,473 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 166 flow [2023-08-24 03:58:02,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-08-24 03:58:02,474 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-24 03:58:02,474 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 166 flow [2023-08-24 03:58:02,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:02,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:58:02,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:58:02,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 03:58:02,475 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 2 more)] === [2023-08-24 03:58:02,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:58:02,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1409819620, now seen corresponding path program 2 times [2023-08-24 03:58:02,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:58:02,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224304982] [2023-08-24 03:58:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:58:02,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:58:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:58:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:58:02,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:58:02,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224304982] [2023-08-24 03:58:02,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224304982] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:58:02,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597383949] [2023-08-24 03:58:02,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 03:58:02,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:58:02,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:58:02,749 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:58:02,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 03:58:02,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:58:02,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:58:02,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-24 03:58:02,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:58:03,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:58:03,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:58:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:58:03,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597383949] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:58:03,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:58:03,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-24 03:58:03,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54240459] [2023-08-24 03:58:03,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:58:03,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 03:58:03,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:58:03,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 03:58:03,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-08-24 03:58:03,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 228 [2023-08-24 03:58:03,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 166 flow. Second operand has 14 states, 14 states have (on average 94.57142857142857) internal successors, (1324), 14 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:03,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:58:03,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 228 [2023-08-24 03:58:03,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:58:06,247 INFO L124 PetriNetUnfolderBase]: 18233/24516 cut-off events. [2023-08-24 03:58:06,247 INFO L125 PetriNetUnfolderBase]: For 18287/18287 co-relation queries the response was YES. [2023-08-24 03:58:06,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66866 conditions, 24516 events. 18233/24516 cut-off events. For 18287/18287 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 128006 event pairs, 324 based on Foata normal form. 998/25514 useless extension candidates. Maximal degree in co-relation 37667. Up to 6829 conditions per place. [2023-08-24 03:58:06,414 INFO L140 encePairwiseOnDemand]: 214/228 looper letters, 379 selfloop transitions, 127 changer transitions 7/513 dead transitions. [2023-08-24 03:58:06,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 513 transitions, 2955 flow [2023-08-24 03:58:06,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-24 03:58:06,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-24 03:58:06,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2521 transitions. [2023-08-24 03:58:06,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48073989321128907 [2023-08-24 03:58:06,421 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2521 transitions. [2023-08-24 03:58:06,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2521 transitions. [2023-08-24 03:58:06,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:58:06,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2521 transitions. [2023-08-24 03:58:06,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 109.6086956521739) internal successors, (2521), 23 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:06,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 228.0) internal successors, (5472), 24 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:06,544 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 228.0) internal successors, (5472), 24 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:06,544 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 166 flow. Second operand 23 states and 2521 transitions. [2023-08-24 03:58:06,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 513 transitions, 2955 flow [2023-08-24 03:58:06,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 513 transitions, 2879 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 03:58:06,575 INFO L231 Difference]: Finished difference. Result has 82 places, 203 transitions, 1587 flow [2023-08-24 03:58:06,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=160, 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=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1587, PETRI_PLACES=82, PETRI_TRANSITIONS=203} [2023-08-24 03:58:06,576 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2023-08-24 03:58:06,577 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 203 transitions, 1587 flow [2023-08-24 03:58:06,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.57142857142857) internal successors, (1324), 14 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:06,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:58:06,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:58:06,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 03:58:06,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:58:06,784 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 2 more)] === [2023-08-24 03:58:06,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:58:06,785 INFO L85 PathProgramCache]: Analyzing trace with hash 86619449, now seen corresponding path program 1 times [2023-08-24 03:58:06,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:58:06,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927417687] [2023-08-24 03:58:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:58:06,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:58:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:58:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:58:07,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:58:07,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927417687] [2023-08-24 03:58:07,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927417687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 03:58:07,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 03:58:07,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 03:58:07,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054375741] [2023-08-24 03:58:07,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:58:07,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 03:58:07,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:58:07,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 03:58:07,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 03:58:07,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 228 [2023-08-24 03:58:07,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 203 transitions, 1587 flow. Second operand has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:07,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:58:07,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 228 [2023-08-24 03:58:07,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:58:10,533 INFO L124 PetriNetUnfolderBase]: 23907/32830 cut-off events. [2023-08-24 03:58:10,534 INFO L125 PetriNetUnfolderBase]: For 149860/149860 co-relation queries the response was YES. [2023-08-24 03:58:10,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141949 conditions, 32830 events. 23907/32830 cut-off events. For 149860/149860 co-relation queries the response was YES. Maximal size of possible extension queue 1183. Compared 186844 event pairs, 3428 based on Foata normal form. 304/33134 useless extension candidates. Maximal degree in co-relation 138821. Up to 12837 conditions per place. [2023-08-24 03:58:10,816 INFO L140 encePairwiseOnDemand]: 217/228 looper letters, 408 selfloop transitions, 193 changer transitions 0/601 dead transitions. [2023-08-24 03:58:10,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 601 transitions, 5720 flow [2023-08-24 03:58:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 03:58:10,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 03:58:10,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 822 transitions. [2023-08-24 03:58:10,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150375939849624 [2023-08-24 03:58:10,819 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 822 transitions. [2023-08-24 03:58:10,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 822 transitions. [2023-08-24 03:58:10,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:58:10,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 822 transitions. [2023-08-24 03:58:10,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.42857142857143) internal successors, (822), 7 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:10,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:10,825 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:10,825 INFO L175 Difference]: Start difference. First operand has 82 places, 203 transitions, 1587 flow. Second operand 7 states and 822 transitions. [2023-08-24 03:58:10,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 601 transitions, 5720 flow [2023-08-24 03:58:11,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 601 transitions, 5165 flow, removed 262 selfloop flow, removed 1 redundant places. [2023-08-24 03:58:11,758 INFO L231 Difference]: Finished difference. Result has 92 places, 371 transitions, 3312 flow [2023-08-24 03:58:11,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3312, PETRI_PLACES=92, PETRI_TRANSITIONS=371} [2023-08-24 03:58:11,760 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2023-08-24 03:58:11,760 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 371 transitions, 3312 flow [2023-08-24 03:58:11,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:11,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:58:11,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:58:11,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 03:58:11,761 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 2 more)] === [2023-08-24 03:58:11,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:58:11,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1357728449, now seen corresponding path program 2 times [2023-08-24 03:58:11,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:58:11,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481454629] [2023-08-24 03:58:11,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:58:11,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:58:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:58:12,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:58:12,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:58:12,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481454629] [2023-08-24 03:58:12,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481454629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 03:58:12,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 03:58:12,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 03:58:12,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521903734] [2023-08-24 03:58:12,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:58:12,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 03:58:12,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:58:12,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 03:58:12,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 03:58:12,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 228 [2023-08-24 03:58:12,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 371 transitions, 3312 flow. Second operand has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:12,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:58:12,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 228 [2023-08-24 03:58:12,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:58:16,120 INFO L124 PetriNetUnfolderBase]: 26984/37993 cut-off events. [2023-08-24 03:58:16,120 INFO L125 PetriNetUnfolderBase]: For 214084/214084 co-relation queries the response was YES. [2023-08-24 03:58:16,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182845 conditions, 37993 events. 26984/37993 cut-off events. For 214084/214084 co-relation queries the response was YES. Maximal size of possible extension queue 1424. Compared 233161 event pairs, 3256 based on Foata normal form. 396/38389 useless extension candidates. Maximal degree in co-relation 178683. Up to 17481 conditions per place. [2023-08-24 03:58:16,573 INFO L140 encePairwiseOnDemand]: 220/228 looper letters, 543 selfloop transitions, 262 changer transitions 4/809 dead transitions. [2023-08-24 03:58:16,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 809 transitions, 8558 flow [2023-08-24 03:58:16,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 03:58:16,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 03:58:16,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 928 transitions. [2023-08-24 03:58:16,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2023-08-24 03:58:16,578 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 928 transitions. [2023-08-24 03:58:16,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 928 transitions. [2023-08-24 03:58:16,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:58:16,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 928 transitions. [2023-08-24 03:58:16,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:16,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 228.0) internal successors, (2052), 9 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:16,585 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 228.0) internal successors, (2052), 9 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:16,585 INFO L175 Difference]: Start difference. First operand has 92 places, 371 transitions, 3312 flow. Second operand 8 states and 928 transitions. [2023-08-24 03:58:16,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 809 transitions, 8558 flow [2023-08-24 03:58:17,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 809 transitions, 8417 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 03:58:17,813 INFO L231 Difference]: Finished difference. Result has 104 places, 476 transitions, 5098 flow [2023-08-24 03:58:17,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=3229, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5098, PETRI_PLACES=104, PETRI_TRANSITIONS=476} [2023-08-24 03:58:17,814 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2023-08-24 03:58:17,814 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 476 transitions, 5098 flow [2023-08-24 03:58:17,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:17,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:58:17,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:58:17,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 03:58:17,815 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 2 more)] === [2023-08-24 03:58:17,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:58:17,815 INFO L85 PathProgramCache]: Analyzing trace with hash -58356105, now seen corresponding path program 3 times [2023-08-24 03:58:17,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:58:17,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046026012] [2023-08-24 03:58:17,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:58:17,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:58:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:58:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:58:18,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:58:18,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046026012] [2023-08-24 03:58:18,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046026012] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:58:18,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145560777] [2023-08-24 03:58:18,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 03:58:18,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:58:18,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:58:18,111 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:58:18,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 03:58:18,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 03:58:18,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:58:18,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-24 03:58:18,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:58:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:58:18,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:58:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:58:19,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145560777] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:58:19,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:58:19,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-24 03:58:19,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587996929] [2023-08-24 03:58:19,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:58:19,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 03:58:19,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:58:19,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 03:58:19,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-08-24 03:58:19,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 228 [2023-08-24 03:58:19,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 476 transitions, 5098 flow. Second operand has 15 states, 15 states have (on average 95.13333333333334) internal successors, (1427), 15 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:19,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:58:19,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 228 [2023-08-24 03:58:19,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:58:32,152 INFO L124 PetriNetUnfolderBase]: 59351/84610 cut-off events. [2023-08-24 03:58:32,152 INFO L125 PetriNetUnfolderBase]: For 686087/686087 co-relation queries the response was YES. [2023-08-24 03:58:32,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452930 conditions, 84610 events. 59351/84610 cut-off events. For 686087/686087 co-relation queries the response was YES. Maximal size of possible extension queue 2958. Compared 588739 event pairs, 3146 based on Foata normal form. 3213/87823 useless extension candidates. Maximal degree in co-relation 443136. Up to 24667 conditions per place. [2023-08-24 03:58:33,121 INFO L140 encePairwiseOnDemand]: 214/228 looper letters, 783 selfloop transitions, 1743 changer transitions 11/2537 dead transitions. [2023-08-24 03:58:33,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 2537 transitions, 30485 flow [2023-08-24 03:58:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-24 03:58:33,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-24 03:58:33,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3775 transitions. [2023-08-24 03:58:33,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730576441102757 [2023-08-24 03:58:33,130 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3775 transitions. [2023-08-24 03:58:33,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3775 transitions. [2023-08-24 03:58:33,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:58:33,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3775 transitions. [2023-08-24 03:58:33,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 107.85714285714286) internal successors, (3775), 35 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:33,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 228.0) internal successors, (8208), 36 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:33,154 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 228.0) internal successors, (8208), 36 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:33,154 INFO L175 Difference]: Start difference. First operand has 104 places, 476 transitions, 5098 flow. Second operand 35 states and 3775 transitions. [2023-08-24 03:58:33,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 2537 transitions, 30485 flow [2023-08-24 03:58:43,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 2537 transitions, 29688 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-08-24 03:58:43,961 INFO L231 Difference]: Finished difference. Result has 164 places, 1916 transitions, 27378 flow [2023-08-24 03:58:43,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=4899, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=27378, PETRI_PLACES=164, PETRI_TRANSITIONS=1916} [2023-08-24 03:58:43,962 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 122 predicate places. [2023-08-24 03:58:43,962 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 1916 transitions, 27378 flow [2023-08-24 03:58:43,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 95.13333333333334) internal successors, (1427), 15 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:43,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:58:43,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:58:43,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-24 03:58:44,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-24 03:58:44,169 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 2 more)] === [2023-08-24 03:58:44,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:58:44,170 INFO L85 PathProgramCache]: Analyzing trace with hash 790221684, now seen corresponding path program 3 times [2023-08-24 03:58:44,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:58:44,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243466814] [2023-08-24 03:58:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:58:44,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:58:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:58:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:58:44,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:58:44,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243466814] [2023-08-24 03:58:44,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243466814] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 03:58:44,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 03:58:44,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 03:58:44,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908049303] [2023-08-24 03:58:44,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:58:44,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 03:58:44,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:58:44,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 03:58:44,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-24 03:58:44,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 228 [2023-08-24 03:58:44,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 1916 transitions, 27378 flow. Second operand has 7 states, 7 states have (on average 100.85714285714286) internal successors, (706), 7 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:58:44,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:58:44,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 228 [2023-08-24 03:58:44,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:59:20,789 INFO L124 PetriNetUnfolderBase]: 95718/137997 cut-off events. [2023-08-24 03:59:20,789 INFO L125 PetriNetUnfolderBase]: For 2671045/2671045 co-relation queries the response was YES. [2023-08-24 03:59:22,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916159 conditions, 137997 events. 95718/137997 cut-off events. For 2671045/2671045 co-relation queries the response was YES. Maximal size of possible extension queue 5049. Compared 1037355 event pairs, 14738 based on Foata normal form. 646/138643 useless extension candidates. Maximal degree in co-relation 909426. Up to 33205 conditions per place. [2023-08-24 03:59:23,245 INFO L140 encePairwiseOnDemand]: 217/228 looper letters, 2240 selfloop transitions, 1842 changer transitions 0/4082 dead transitions. [2023-08-24 03:59:23,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 4082 transitions, 66266 flow [2023-08-24 03:59:23,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 03:59:23,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 03:59:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1267 transitions. [2023-08-24 03:59:23,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50518341307815 [2023-08-24 03:59:23,259 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1267 transitions. [2023-08-24 03:59:23,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1267 transitions. [2023-08-24 03:59:23,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:59:23,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1267 transitions. [2023-08-24 03:59:23,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 115.18181818181819) internal successors, (1267), 11 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:59:23,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 228.0) internal successors, (2736), 12 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:59:23,286 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 228.0) internal successors, (2736), 12 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:59:23,287 INFO L175 Difference]: Start difference. First operand has 164 places, 1916 transitions, 27378 flow. Second operand 11 states and 1267 transitions. [2023-08-24 03:59:23,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 4082 transitions, 66266 flow [2023-08-24 04:01:54,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 4082 transitions, 64634 flow, removed 816 selfloop flow, removed 0 redundant places. [2023-08-24 04:01:54,379 INFO L231 Difference]: Finished difference. Result has 182 places, 3339 transitions, 56785 flow [2023-08-24 04:01:54,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=26728, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1916, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=728, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=56785, PETRI_PLACES=182, PETRI_TRANSITIONS=3339} [2023-08-24 04:01:54,381 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 140 predicate places. [2023-08-24 04:01:54,381 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 3339 transitions, 56785 flow [2023-08-24 04:01:54,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 100.85714285714286) internal successors, (706), 7 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:01:54,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:01:54,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:01:54,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 04:01:54,382 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 2 more)] === [2023-08-24 04:01:54,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:01:54,382 INFO L85 PathProgramCache]: Analyzing trace with hash 464010053, now seen corresponding path program 1 times [2023-08-24 04:01:54,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:01:54,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794772101] [2023-08-24 04:01:54,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:01:54,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:01:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:01:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:01:54,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:01:54,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794772101] [2023-08-24 04:01:54,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794772101] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:01:54,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:01:54,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 04:01:54,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738567111] [2023-08-24 04:01:54,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:01:54,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 04:01:54,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:01:54,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 04:01:54,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 04:01:54,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 228 [2023-08-24 04:01:54,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 3339 transitions, 56785 flow. Second operand has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:01:54,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:01:54,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 228 [2023-08-24 04:01:54,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:02:57,451 INFO L124 PetriNetUnfolderBase]: 94188/140686 cut-off events. [2023-08-24 04:02:57,451 INFO L125 PetriNetUnfolderBase]: For 3513402/3523513 co-relation queries the response was YES. [2023-08-24 04:02:59,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1037676 conditions, 140686 events. 94188/140686 cut-off events. For 3513402/3523513 co-relation queries the response was YES. Maximal size of possible extension queue 6067. Compared 1170673 event pairs, 13048 based on Foata normal form. 11005/150523 useless extension candidates. Maximal degree in co-relation 1030448. Up to 55229 conditions per place. [2023-08-24 04:03:00,327 INFO L140 encePairwiseOnDemand]: 221/228 looper letters, 2377 selfloop transitions, 1563 changer transitions 117/4132 dead transitions. [2023-08-24 04:03:00,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 4132 transitions, 76570 flow [2023-08-24 04:03:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 04:03:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 04:03:00,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 595 transitions. [2023-08-24 04:03:00,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5219298245614035 [2023-08-24 04:03:00,329 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 595 transitions. [2023-08-24 04:03:00,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 595 transitions. [2023-08-24 04:03:00,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:03:00,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 595 transitions. [2023-08-24 04:03:00,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:03:00,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:03:00,332 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:03:00,332 INFO L175 Difference]: Start difference. First operand has 182 places, 3339 transitions, 56785 flow. Second operand 5 states and 595 transitions. [2023-08-24 04:03:00,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 4132 transitions, 76570 flow [2023-08-24 04:07:39,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 4132 transitions, 76284 flow, removed 143 selfloop flow, removed 0 redundant places. [2023-08-24 04:07:39,426 INFO L231 Difference]: Finished difference. Result has 189 places, 3315 transitions, 61307 flow [2023-08-24 04:07:39,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=55677, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1513, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1723, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=61307, PETRI_PLACES=189, PETRI_TRANSITIONS=3315} [2023-08-24 04:07:39,429 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 147 predicate places. [2023-08-24 04:07:39,429 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 3315 transitions, 61307 flow [2023-08-24 04:07:39,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:07:39,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:07:39,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:07:39,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 04:07:39,430 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 2 more)] === [2023-08-24 04:07:39,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:07:39,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1599797733, now seen corresponding path program 2 times [2023-08-24 04:07:39,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:07:39,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758316328] [2023-08-24 04:07:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:07:39,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:07:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:07:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:07:39,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:07:39,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758316328] [2023-08-24 04:07:39,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758316328] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:07:39,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:07:39,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 04:07:39,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191190812] [2023-08-24 04:07:39,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:07:39,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 04:07:39,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:07:39,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 04:07:39,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 04:07:39,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 228 [2023-08-24 04:07:39,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 3315 transitions, 61307 flow. Second operand has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:07:39,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:07:39,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 228 [2023-08-24 04:07:39,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:09:01,200 INFO L124 PetriNetUnfolderBase]: 109304/165077 cut-off events. [2023-08-24 04:09:01,200 INFO L125 PetriNetUnfolderBase]: For 4999740/5011909 co-relation queries the response was YES. [2023-08-24 04:09:03,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1332906 conditions, 165077 events. 109304/165077 cut-off events. For 4999740/5011909 co-relation queries the response was YES. Maximal size of possible extension queue 7452. Compared 1425636 event pairs, 18665 based on Foata normal form. 14633/177972 useless extension candidates. Maximal degree in co-relation 1324291. Up to 70814 conditions per place. [2023-08-24 04:09:04,389 INFO L140 encePairwiseOnDemand]: 220/228 looper letters, 2009 selfloop transitions, 2679 changer transitions 95/4858 dead transitions. [2023-08-24 04:09:04,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 4858 transitions, 97881 flow [2023-08-24 04:09:04,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 04:09:04,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 04:09:04,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 711 transitions. [2023-08-24 04:09:04,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197368421052632 [2023-08-24 04:09:04,392 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 711 transitions. [2023-08-24 04:09:04,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 711 transitions. [2023-08-24 04:09:04,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:09:04,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 711 transitions. [2023-08-24 04:09:04,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:09:04,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 228.0) internal successors, (1596), 7 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:09:04,396 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 228.0) internal successors, (1596), 7 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:09:04,396 INFO L175 Difference]: Start difference. First operand has 189 places, 3315 transitions, 61307 flow. Second operand 6 states and 711 transitions. [2023-08-24 04:09:04,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 4858 transitions, 97881 flow Received shutdown request... [2023-08-24 04:11:34,805 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 04:11:35,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-24 04:11:36,379 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-24 04:11:36,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 04:11:36,379 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-24 04:11:36,380 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-24 04:11:36,380 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-24 04:11:36,380 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-24 04:11:36,381 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-24 04:11:36,381 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1] [2023-08-24 04:11:36,383 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 04:11:36,383 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 04:11:36,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 04:11:36 BasicIcfg [2023-08-24 04:11:36,385 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 04:11:36,386 INFO L158 Benchmark]: Toolchain (without parser) took 820498.80ms. Allocated memory was 373.3MB in the beginning and 15.3GB in the end (delta: 15.0GB). Free memory was 348.5MB in the beginning and 11.7GB in the end (delta: -11.4GB). Peak memory consumption was 9.5GB. Max. memory is 16.0GB. [2023-08-24 04:11:36,386 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 373.3MB. Free memory is still 349.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 04:11:36,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.68ms. Allocated memory is still 373.3MB. Free memory was 348.2MB in the beginning and 336.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 04:11:36,386 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.39ms. Allocated memory is still 373.3MB. Free memory was 336.4MB in the beginning and 334.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 04:11:36,387 INFO L158 Benchmark]: Boogie Preprocessor took 25.39ms. Allocated memory is still 373.3MB. Free memory was 334.6MB in the beginning and 333.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 04:11:36,387 INFO L158 Benchmark]: RCFGBuilder took 584.67ms. Allocated memory is still 373.3MB. Free memory was 333.2MB in the beginning and 313.7MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 04:11:36,387 INFO L158 Benchmark]: TraceAbstraction took 819611.52ms. Allocated memory was 373.3MB in the beginning and 15.3GB in the end (delta: 15.0GB). Free memory was 313.1MB in the beginning and 11.7GB in the end (delta: -11.4GB). Peak memory consumption was 9.5GB. Max. memory is 16.0GB. [2023-08-24 04:11:36,388 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 373.3MB. Free memory is still 349.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 241.68ms. Allocated memory is still 373.3MB. Free memory was 348.2MB in the beginning and 336.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.39ms. Allocated memory is still 373.3MB. Free memory was 336.4MB in the beginning and 334.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 25.39ms. Allocated memory is still 373.3MB. Free memory was 334.6MB in the beginning and 333.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 584.67ms. Allocated memory is still 373.3MB. Free memory was 333.2MB in the beginning and 313.7MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 819611.52ms. Allocated memory was 373.3MB in the beginning and 15.3GB in the end (delta: 15.0GB). Free memory was 313.1MB in the beginning and 11.7GB in the end (delta: -11.4GB). Peak memory consumption was 9.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 120 PlacesBefore, 42 PlacesAfterwards, 117 TransitionsBefore, 33 TransitionsAfterwards, 1824 CoEnabledTransitionPairs, 7 FixpointIterations, 49 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 95 TotalNumberOfCompositions, 3486 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2642, independent: 2580, independent conditional: 0, independent unconditional: 2580, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 967, independent: 955, independent conditional: 0, independent unconditional: 955, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2642, independent: 1625, independent conditional: 0, independent unconditional: 1625, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 967, unknown conditional: 0, unknown unconditional: 967] , Statistics on independence cache: Total cache size (in pairs): 174, Positive cache size: 168, Positive conditional cache size: 0, Positive unconditional cache size: 168, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 156 locations, 5 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: 819.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 810.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1194 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1194 mSDsluCounter, 76 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 127 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4396 IncrementalHoareTripleChecker+Invalid, 4523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 127 mSolverCounterUnsat, 32 mSDtfsCounter, 4396 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61307occurred in iteration=8, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 295 NumberOfCodeBlocks, 295 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 336 ConstructedInterpolants, 0 QuantifiedInterpolants, 2776 SizeOfPredicates, 18 NumberOfNonLiveVariables, 430 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 6/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown