/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/pthread-wmm/safe004_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:08:13,695 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:08:13,739 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 [2023-08-23 23:08:13,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:08:13,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:08:13,766 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:08:13,767 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:08:13,767 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:08:13,767 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:08:13,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:08:13,770 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:08:13,770 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:08:13,771 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:08:13,771 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:08:13,772 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:08:13,772 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:08:13,772 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:08:13,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:08:13,772 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:08:13,772 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:08:13,773 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:08:13,773 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:08:13,773 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:08:13,773 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:08:13,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:08:13,774 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:08:13,774 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:08:13,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:08:13,774 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:08:13,774 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:08:13,775 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:08:13,775 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:08:13,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:08:13,775 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:08:13,775 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:08:13,775 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:08:13,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:08:14,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:08:14,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:08:14,009 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:08:14,010 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:08:14,010 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2023-08-23 23:08:14,985 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:08:15,156 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:08:15,157 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2023-08-23 23:08:15,170 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b48d7f0cb/490d68c5f7f44003a994900af6e12147/FLAG81d85d139 [2023-08-23 23:08:15,186 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b48d7f0cb/490d68c5f7f44003a994900af6e12147 [2023-08-23 23:08:15,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:08:15,191 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:08:15,193 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:08:15,194 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:08:15,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:08:15,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:08:15" (1/1) ... [2023-08-23 23:08:15,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d43bbf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:15, skipping insertion in model container [2023-08-23 23:08:15,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:08:15" (1/1) ... [2023-08-23 23:08:15,241 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:08:15,364 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i[945,958] [2023-08-23 23:08:15,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:08:15,478 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:08:15,487 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i[945,958] [2023-08-23 23:08:15,503 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:08:15,505 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:08:15,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:08:15,549 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:08:15,549 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:08:15,554 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:08:15,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:15 WrapperNode [2023-08-23 23:08:15,555 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:08:15,556 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:08:15,556 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:08:15,556 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:08:15,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:15" (1/1) ... [2023-08-23 23:08:15,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:15" (1/1) ... [2023-08-23 23:08:15,600 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-23 23:08:15,600 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:08:15,601 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:08:15,601 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:08:15,601 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:08:15,606 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:15" (1/1) ... [2023-08-23 23:08:15,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:15" (1/1) ... [2023-08-23 23:08:15,614 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:15" (1/1) ... [2023-08-23 23:08:15,615 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:15" (1/1) ... [2023-08-23 23:08:15,624 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:15" (1/1) ... [2023-08-23 23:08:15,625 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:15" (1/1) ... [2023-08-23 23:08:15,625 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:15" (1/1) ... [2023-08-23 23:08:15,626 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:15" (1/1) ... [2023-08-23 23:08:15,627 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:08:15,628 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:08:15,628 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:08:15,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:08:15,629 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:15" (1/1) ... [2023-08-23 23:08:15,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:08:15,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:08:15,652 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) [2023-08-23 23:08:15,671 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 [2023-08-23 23:08:15,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:08:15,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-23 23:08:15,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:08:15,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:08:15,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:08:15,680 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-23 23:08:15,680 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-23 23:08:15,680 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-23 23:08:15,680 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-23 23:08:15,680 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-23 23:08:15,680 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-23 23:08:15,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:08:15,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-23 23:08:15,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:08:15,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:08:15,683 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-23 23:08:15,765 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:08:15,767 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:08:15,904 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:08:15,908 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:08:15,908 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-23 23:08:15,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:08:15 BoogieIcfgContainer [2023-08-23 23:08:15,910 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:08:15,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:08:15,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:08:15,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:08:15,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:08:15" (1/3) ... [2023-08-23 23:08:15,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4933017d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:08:15, skipping insertion in model container [2023-08-23 23:08:15,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:15" (2/3) ... [2023-08-23 23:08:15,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4933017d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:08:15, skipping insertion in model container [2023-08-23 23:08:15,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:08:15" (3/3) ... [2023-08-23 23:08:15,915 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_tso.i [2023-08-23 23:08:15,925 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:08:15,925 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-23 23:08:15,925 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:08:15,963 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-23 23:08:15,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-08-23 23:08:16,022 INFO L124 PetriNetUnfolderBase]: 2/81 cut-off events. [2023-08-23 23:08:16,023 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:08:16,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-23 23:08:16,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-08-23 23:08:16,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-08-23 23:08:16,030 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:08:16,035 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-23 23:08:16,037 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-23 23:08:16,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-08-23 23:08:16,061 INFO L124 PetriNetUnfolderBase]: 1/69 cut-off events. [2023-08-23 23:08:16,061 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:08:16,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-23 23:08:16,063 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-23 23:08:17,486 INFO L134 LiptonReduction]: Checked pairs total: 1941 [2023-08-23 23:08:17,486 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-08-23 23:08:17,495 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:08:17,499 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;@548398a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:08:17,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-23 23:08:17,502 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:08:17,502 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-23 23:08:17,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:08:17,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:17,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:17,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:08:17,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:17,506 INFO L85 PathProgramCache]: Analyzing trace with hash -856354579, now seen corresponding path program 1 times [2023-08-23 23:08:17,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:17,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443322387] [2023-08-23 23:08:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:17,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:17,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:17,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443322387] [2023-08-23 23:08:17,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443322387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:17,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:17,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 23:08:17,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314778727] [2023-08-23 23:08:17,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:17,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:08:17,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:17,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:08:17,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:08:17,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-23 23:08:17,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:17,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:17,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-23 23:08:17,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:18,011 INFO L124 PetriNetUnfolderBase]: 522/834 cut-off events. [2023-08-23 23:08:18,012 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-23 23:08:18,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 834 events. 522/834 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3544 event pairs, 281 based on Foata normal form. 61/895 useless extension candidates. Maximal degree in co-relation 1712. Up to 589 conditions per place. [2023-08-23 23:08:18,019 INFO L140 encePairwiseOnDemand]: 131/139 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-08-23 23:08:18,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-08-23 23:08:18,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:08:18,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:08:18,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-08-23 23:08:18,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5587529976019184 [2023-08-23 23:08:18,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-08-23 23:08:18,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-08-23 23:08:18,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:18,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-08-23 23:08:18,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,043 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 233 transitions. [2023-08-23 23:08:18,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-08-23 23:08:18,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-23 23:08:18,046 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 94 flow [2023-08-23 23:08:18,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-08-23 23:08:18,050 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-23 23:08:18,050 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2023-08-23 23:08:18,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:18,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:18,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:08:18,051 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:08:18,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:18,051 INFO L85 PathProgramCache]: Analyzing trace with hash -777188759, now seen corresponding path program 1 times [2023-08-23 23:08:18,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:18,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627877553] [2023-08-23 23:08:18,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:18,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:18,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:18,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627877553] [2023-08-23 23:08:18,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627877553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:18,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:18,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:08:18,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270343520] [2023-08-23 23:08:18,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:18,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:08:18,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:18,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:08:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:08:18,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-23 23:08:18,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:18,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-23 23:08:18,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:18,275 INFO L124 PetriNetUnfolderBase]: 496/793 cut-off events. [2023-08-23 23:08:18,275 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2023-08-23 23:08:18,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2329 conditions, 793 events. 496/793 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3423 event pairs, 61 based on Foata normal form. 4/797 useless extension candidates. Maximal degree in co-relation 2317. Up to 541 conditions per place. [2023-08-23 23:08:18,279 INFO L140 encePairwiseOnDemand]: 131/139 looper letters, 32 selfloop transitions, 11 changer transitions 0/43 dead transitions. [2023-08-23 23:08:18,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 43 transitions, 252 flow [2023-08-23 23:08:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:08:18,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:08:18,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 308 transitions. [2023-08-23 23:08:18,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539568345323741 [2023-08-23 23:08:18,283 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 308 transitions. [2023-08-23 23:08:18,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 308 transitions. [2023-08-23 23:08:18,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:18,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 308 transitions. [2023-08-23 23:08:18,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,287 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,287 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 308 transitions. [2023-08-23 23:08:18,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 43 transitions, 252 flow [2023-08-23 23:08:18,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 43 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:08:18,292 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 158 flow [2023-08-23 23:08:18,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2023-08-23 23:08:18,293 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-23 23:08:18,294 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 158 flow [2023-08-23 23:08:18,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:18,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:18,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 23:08:18,299 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:08:18,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:18,302 INFO L85 PathProgramCache]: Analyzing trace with hash -777188790, now seen corresponding path program 1 times [2023-08-23 23:08:18,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:18,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438004238] [2023-08-23 23:08:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:18,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:18,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:18,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438004238] [2023-08-23 23:08:18,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438004238] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:18,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:18,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:08:18,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942600150] [2023-08-23 23:08:18,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:18,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:08:18,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:18,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:08:18,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:08:18,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-23 23:08:18,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:18,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-23 23:08:18,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:18,490 INFO L124 PetriNetUnfolderBase]: 470/752 cut-off events. [2023-08-23 23:08:18,490 INFO L125 PetriNetUnfolderBase]: For 586/586 co-relation queries the response was YES. [2023-08-23 23:08:18,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2491 conditions, 752 events. 470/752 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3205 event pairs, 51 based on Foata normal form. 4/756 useless extension candidates. Maximal degree in co-relation 2476. Up to 520 conditions per place. [2023-08-23 23:08:18,496 INFO L140 encePairwiseOnDemand]: 131/139 looper letters, 35 selfloop transitions, 16 changer transitions 0/51 dead transitions. [2023-08-23 23:08:18,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 51 transitions, 348 flow [2023-08-23 23:08:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:08:18,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:08:18,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-08-23 23:08:18,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575539568345323 [2023-08-23 23:08:18,497 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-08-23 23:08:18,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-08-23 23:08:18,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:18,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-08-23 23:08:18,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2023-08-23 23:08:18,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,499 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,499 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 158 flow. Second operand 4 states and 310 transitions. [2023-08-23 23:08:18,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 51 transitions, 348 flow [2023-08-23 23:08:18,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-23 23:08:18,502 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 276 flow [2023-08-23 23:08:18,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2023-08-23 23:08:18,503 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-23 23:08:18,505 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 276 flow [2023-08-23 23:08:18,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:18,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:18,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 23:08:18,506 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:08:18,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:18,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1676951630, now seen corresponding path program 1 times [2023-08-23 23:08:18,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:18,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561724437] [2023-08-23 23:08:18,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:18,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:18,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:18,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561724437] [2023-08-23 23:08:18,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561724437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:18,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:18,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:08:18,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867609258] [2023-08-23 23:08:18,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:18,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:08:18,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:18,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:08:18,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:08:18,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-23 23:08:18,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:18,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-23 23:08:18,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:18,705 INFO L124 PetriNetUnfolderBase]: 445/713 cut-off events. [2023-08-23 23:08:18,705 INFO L125 PetriNetUnfolderBase]: For 1779/1779 co-relation queries the response was YES. [2023-08-23 23:08:18,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2838 conditions, 713 events. 445/713 cut-off events. For 1779/1779 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2703 event pairs, 91 based on Foata normal form. 5/718 useless extension candidates. Maximal degree in co-relation 2818. Up to 384 conditions per place. [2023-08-23 23:08:18,708 INFO L140 encePairwiseOnDemand]: 131/139 looper letters, 28 selfloop transitions, 17 changer transitions 9/54 dead transitions. [2023-08-23 23:08:18,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 518 flow [2023-08-23 23:08:18,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:08:18,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:08:18,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2023-08-23 23:08:18,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5431654676258992 [2023-08-23 23:08:18,710 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 302 transitions. [2023-08-23 23:08:18,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 302 transitions. [2023-08-23 23:08:18,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:18,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 302 transitions. [2023-08-23 23:08:18,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,712 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,712 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 276 flow. Second operand 4 states and 302 transitions. [2023-08-23 23:08:18,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 518 flow [2023-08-23 23:08:18,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 518 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-23 23:08:18,717 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 386 flow [2023-08-23 23:08:18,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-08-23 23:08:18,718 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-08-23 23:08:18,719 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 386 flow [2023-08-23 23:08:18,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:18,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:18,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-23 23:08:18,719 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:08:18,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:18,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1191731311, now seen corresponding path program 1 times [2023-08-23 23:08:18,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:18,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190724387] [2023-08-23 23:08:18,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:18,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:18,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:18,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:18,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190724387] [2023-08-23 23:08:18,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190724387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:18,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:18,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:08:18,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719654867] [2023-08-23 23:08:18,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:18,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:08:18,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:18,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:08:18,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:08:18,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-23 23:08:18,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:18,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-23 23:08:18,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:18,872 INFO L124 PetriNetUnfolderBase]: 312/515 cut-off events. [2023-08-23 23:08:18,872 INFO L125 PetriNetUnfolderBase]: For 1899/1899 co-relation queries the response was YES. [2023-08-23 23:08:18,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2323 conditions, 515 events. 312/515 cut-off events. For 1899/1899 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1853 event pairs, 69 based on Foata normal form. 5/520 useless extension candidates. Maximal degree in co-relation 2298. Up to 244 conditions per place. [2023-08-23 23:08:18,875 INFO L140 encePairwiseOnDemand]: 132/139 looper letters, 36 selfloop transitions, 14 changer transitions 11/61 dead transitions. [2023-08-23 23:08:18,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 722 flow [2023-08-23 23:08:18,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:08:18,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:08:18,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 301 transitions. [2023-08-23 23:08:18,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5413669064748201 [2023-08-23 23:08:18,877 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 301 transitions. [2023-08-23 23:08:18,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 301 transitions. [2023-08-23 23:08:18,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:18,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 301 transitions. [2023-08-23 23:08:18,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,879 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,879 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 386 flow. Second operand 4 states and 301 transitions. [2023-08-23 23:08:18,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 722 flow [2023-08-23 23:08:18,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 718 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:08:18,883 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 492 flow [2023-08-23 23:08:18,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=492, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-08-23 23:08:18,884 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-08-23 23:08:18,884 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 492 flow [2023-08-23 23:08:18,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:18,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:18,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-23 23:08:18,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:08:18,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:18,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1711069275, now seen corresponding path program 1 times [2023-08-23 23:08:18,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:18,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363388261] [2023-08-23 23:08:18,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:18,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:18,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:18,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363388261] [2023-08-23 23:08:18,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363388261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:18,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:18,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:08:18,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87809445] [2023-08-23 23:08:18,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:18,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:08:18,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:18,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:08:18,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:08:18,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-23 23:08:18,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 492 flow. Second operand has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 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) [2023-08-23 23:08:18,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:18,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-23 23:08:18,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:19,093 INFO L124 PetriNetUnfolderBase]: 346/605 cut-off events. [2023-08-23 23:08:19,094 INFO L125 PetriNetUnfolderBase]: For 2817/2817 co-relation queries the response was YES. [2023-08-23 23:08:19,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2735 conditions, 605 events. 346/605 cut-off events. For 2817/2817 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2567 event pairs, 68 based on Foata normal form. 6/611 useless extension candidates. Maximal degree in co-relation 2706. Up to 179 conditions per place. [2023-08-23 23:08:19,097 INFO L140 encePairwiseOnDemand]: 131/139 looper letters, 29 selfloop transitions, 22 changer transitions 27/78 dead transitions. [2023-08-23 23:08:19,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 835 flow [2023-08-23 23:08:19,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:08:19,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:08:19,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 533 transitions. [2023-08-23 23:08:19,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477903391572456 [2023-08-23 23:08:19,099 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 533 transitions. [2023-08-23 23:08:19,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 533 transitions. [2023-08-23 23:08:19,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:19,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 533 transitions. [2023-08-23 23:08:19,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.14285714285714) internal successors, (533), 7 states have internal predecessors, (533), 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) [2023-08-23 23:08:19,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,102 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,102 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 492 flow. Second operand 7 states and 533 transitions. [2023-08-23 23:08:19,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 835 flow [2023-08-23 23:08:19,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 822 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-23 23:08:19,109 INFO L231 Difference]: Finished difference. Result has 55 places, 38 transitions, 499 flow [2023-08-23 23:08:19,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=499, PETRI_PLACES=55, PETRI_TRANSITIONS=38} [2023-08-23 23:08:19,111 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2023-08-23 23:08:19,111 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 38 transitions, 499 flow [2023-08-23 23:08:19,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 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) [2023-08-23 23:08:19,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:19,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:19,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-23 23:08:19,112 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:08:19,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:19,112 INFO L85 PathProgramCache]: Analyzing trace with hash 373098259, now seen corresponding path program 2 times [2023-08-23 23:08:19,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:19,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443217788] [2023-08-23 23:08:19,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:19,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:19,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:19,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443217788] [2023-08-23 23:08:19,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443217788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:19,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:19,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:08:19,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514515655] [2023-08-23 23:08:19,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:19,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:08:19,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:19,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:08:19,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:08:19,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-23 23:08:19,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 38 transitions, 499 flow. Second operand has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 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) [2023-08-23 23:08:19,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:19,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-23 23:08:19,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:19,280 INFO L124 PetriNetUnfolderBase]: 253/446 cut-off events. [2023-08-23 23:08:19,280 INFO L125 PetriNetUnfolderBase]: For 2559/2559 co-relation queries the response was YES. [2023-08-23 23:08:19,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2165 conditions, 446 events. 253/446 cut-off events. For 2559/2559 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1768 event pairs, 50 based on Foata normal form. 10/456 useless extension candidates. Maximal degree in co-relation 2134. Up to 293 conditions per place. [2023-08-23 23:08:19,282 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 20 selfloop transitions, 5 changer transitions 29/54 dead transitions. [2023-08-23 23:08:19,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 698 flow [2023-08-23 23:08:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:08:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:08:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 372 transitions. [2023-08-23 23:08:19,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5352517985611511 [2023-08-23 23:08:19,284 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 372 transitions. [2023-08-23 23:08:19,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 372 transitions. [2023-08-23 23:08:19,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:19,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 372 transitions. [2023-08-23 23:08:19,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.4) internal successors, (372), 5 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) [2023-08-23 23:08:19,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,287 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,287 INFO L175 Difference]: Start difference. First operand has 55 places, 38 transitions, 499 flow. Second operand 5 states and 372 transitions. [2023-08-23 23:08:19,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 698 flow [2023-08-23 23:08:19,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 665 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-23 23:08:19,293 INFO L231 Difference]: Finished difference. Result has 55 places, 17 transitions, 151 flow [2023-08-23 23:08:19,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=55, PETRI_TRANSITIONS=17} [2023-08-23 23:08:19,294 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2023-08-23 23:08:19,294 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 17 transitions, 151 flow [2023-08-23 23:08:19,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 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) [2023-08-23 23:08:19,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:19,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:19,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-23 23:08:19,295 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:08:19,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:19,295 INFO L85 PathProgramCache]: Analyzing trace with hash -259012253, now seen corresponding path program 1 times [2023-08-23 23:08:19,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:19,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764429708] [2023-08-23 23:08:19,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:19,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:19,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:19,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764429708] [2023-08-23 23:08:19,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764429708] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:19,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:19,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:08:19,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432950199] [2023-08-23 23:08:19,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:19,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:08:19,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:19,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:08:19,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:08:19,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-08-23 23:08:19,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 17 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:19,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-08-23 23:08:19,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:19,432 INFO L124 PetriNetUnfolderBase]: 46/108 cut-off events. [2023-08-23 23:08:19,432 INFO L125 PetriNetUnfolderBase]: For 1041/1043 co-relation queries the response was YES. [2023-08-23 23:08:19,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 108 events. 46/108 cut-off events. For 1041/1043 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 336 event pairs, 12 based on Foata normal form. 4/110 useless extension candidates. Maximal degree in co-relation 438. Up to 62 conditions per place. [2023-08-23 23:08:19,433 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 17 selfloop transitions, 3 changer transitions 13/36 dead transitions. [2023-08-23 23:08:19,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 36 transitions, 353 flow [2023-08-23 23:08:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:08:19,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:08:19,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2023-08-23 23:08:19,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611510791366906 [2023-08-23 23:08:19,434 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2023-08-23 23:08:19,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2023-08-23 23:08:19,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:19,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2023-08-23 23:08:19,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2023-08-23 23:08:19,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,436 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,436 INFO L175 Difference]: Start difference. First operand has 55 places, 17 transitions, 151 flow. Second operand 5 states and 390 transitions. [2023-08-23 23:08:19,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 36 transitions, 353 flow [2023-08-23 23:08:19,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 181 flow, removed 13 selfloop flow, removed 25 redundant places. [2023-08-23 23:08:19,438 INFO L231 Difference]: Finished difference. Result has 37 places, 19 transitions, 92 flow [2023-08-23 23:08:19,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=19} [2023-08-23 23:08:19,440 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-23 23:08:19,440 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 19 transitions, 92 flow [2023-08-23 23:08:19,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:19,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:19,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-23 23:08:19,441 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:08:19,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:19,441 INFO L85 PathProgramCache]: Analyzing trace with hash -617030327, now seen corresponding path program 1 times [2023-08-23 23:08:19,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:19,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029476677] [2023-08-23 23:08:19,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:19,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:19,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:19,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029476677] [2023-08-23 23:08:19,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029476677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:19,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:19,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:08:19,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681375768] [2023-08-23 23:08:19,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:19,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:08:19,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:19,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:08:19,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:08:19,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-08-23 23:08:19,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 19 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:19,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-08-23 23:08:19,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:19,591 INFO L124 PetriNetUnfolderBase]: 24/70 cut-off events. [2023-08-23 23:08:19,591 INFO L125 PetriNetUnfolderBase]: For 97/110 co-relation queries the response was YES. [2023-08-23 23:08:19,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 70 events. 24/70 cut-off events. For 97/110 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 175 event pairs, 3 based on Foata normal form. 5/74 useless extension candidates. Maximal degree in co-relation 233. Up to 40 conditions per place. [2023-08-23 23:08:19,591 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 16 selfloop transitions, 5 changer transitions 13/37 dead transitions. [2023-08-23 23:08:19,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 37 transitions, 250 flow [2023-08-23 23:08:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-23 23:08:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-23 23:08:19,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 462 transitions. [2023-08-23 23:08:19,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539568345323741 [2023-08-23 23:08:19,592 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 462 transitions. [2023-08-23 23:08:19,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 462 transitions. [2023-08-23 23:08:19,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:19,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 462 transitions. [2023-08-23 23:08:19,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 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) [2023-08-23 23:08:19,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,595 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,595 INFO L175 Difference]: Start difference. First operand has 37 places, 19 transitions, 92 flow. Second operand 6 states and 462 transitions. [2023-08-23 23:08:19,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 37 transitions, 250 flow [2023-08-23 23:08:19,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 245 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-23 23:08:19,596 INFO L231 Difference]: Finished difference. Result has 41 places, 19 transitions, 111 flow [2023-08-23 23:08:19,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=41, PETRI_TRANSITIONS=19} [2023-08-23 23:08:19,596 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-08-23 23:08:19,596 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 19 transitions, 111 flow [2023-08-23 23:08:19,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:19,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:19,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-23 23:08:19,597 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:08:19,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:19,597 INFO L85 PathProgramCache]: Analyzing trace with hash -721878226, now seen corresponding path program 1 times [2023-08-23 23:08:19,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:19,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496356401] [2023-08-23 23:08:19,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:19,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:19,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:19,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496356401] [2023-08-23 23:08:19,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496356401] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:19,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:19,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:08:19,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833757990] [2023-08-23 23:08:19,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:19,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-23 23:08:19,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:19,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-23 23:08:19,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-23 23:08:19,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-08-23 23:08:19,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 19 transitions, 111 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:19,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-08-23 23:08:19,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:19,708 INFO L124 PetriNetUnfolderBase]: 11/41 cut-off events. [2023-08-23 23:08:19,708 INFO L125 PetriNetUnfolderBase]: For 102/107 co-relation queries the response was YES. [2023-08-23 23:08:19,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 41 events. 11/41 cut-off events. For 102/107 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 2 based on Foata normal form. 4/44 useless extension candidates. Maximal degree in co-relation 152. Up to 17 conditions per place. [2023-08-23 23:08:19,708 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-08-23 23:08:19,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 26 transitions, 185 flow [2023-08-23 23:08:19,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:08:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:08:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2023-08-23 23:08:19,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5354573484069887 [2023-08-23 23:08:19,710 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 521 transitions. [2023-08-23 23:08:19,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 521 transitions. [2023-08-23 23:08:19,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:19,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 521 transitions. [2023-08-23 23:08:19,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,713 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,713 INFO L175 Difference]: Start difference. First operand has 41 places, 19 transitions, 111 flow. Second operand 7 states and 521 transitions. [2023-08-23 23:08:19,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 26 transitions, 185 flow [2023-08-23 23:08:19,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 153 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-23 23:08:19,713 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-08-23 23:08:19,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-08-23 23:08:19,714 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-23 23:08:19,714 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-08-23 23:08:19,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-23 23:08:19,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-23 23:08:19,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-23 23:08:19,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-23 23:08:19,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-23 23:08:19,716 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:19,718 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 23:08:19,718 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 23:08:19,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 11:08:19 BasicIcfg [2023-08-23 23:08:19,720 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 23:08:19,720 INFO L158 Benchmark]: Toolchain (without parser) took 4529.05ms. Allocated memory was 375.4MB in the beginning and 545.3MB in the end (delta: 169.9MB). Free memory was 329.3MB in the beginning and 461.2MB in the end (delta: -131.8MB). Peak memory consumption was 40.6MB. Max. memory is 16.0GB. [2023-08-23 23:08:19,720 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 375.4MB. Free memory was 353.6MB in the beginning and 353.4MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:08:19,720 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.00ms. Allocated memory is still 375.4MB. Free memory was 329.3MB in the beginning and 308.7MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-23 23:08:19,721 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.55ms. Allocated memory is still 375.4MB. Free memory was 308.7MB in the beginning and 306.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:08:19,721 INFO L158 Benchmark]: Boogie Preprocessor took 26.24ms. Allocated memory is still 375.4MB. Free memory was 306.7MB in the beginning and 305.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:08:19,721 INFO L158 Benchmark]: RCFGBuilder took 281.61ms. Allocated memory is still 375.4MB. Free memory was 305.7MB in the beginning and 291.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-23 23:08:19,721 INFO L158 Benchmark]: TraceAbstraction took 3808.81ms. Allocated memory was 375.4MB in the beginning and 545.3MB in the end (delta: 169.9MB). Free memory was 289.9MB in the beginning and 461.2MB in the end (delta: -171.2MB). Peak memory consumption was 744.3kB. Max. memory is 16.0GB. [2023-08-23 23:08:19,722 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 375.4MB. Free memory was 353.6MB in the beginning and 353.4MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 362.00ms. Allocated memory is still 375.4MB. Free memory was 329.3MB in the beginning and 308.7MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.55ms. Allocated memory is still 375.4MB. Free memory was 308.7MB in the beginning and 306.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.24ms. Allocated memory is still 375.4MB. Free memory was 306.7MB in the beginning and 305.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 281.61ms. Allocated memory is still 375.4MB. Free memory was 305.7MB in the beginning and 291.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3808.81ms. Allocated memory was 375.4MB in the beginning and 545.3MB in the end (delta: 169.9MB). Free memory was 289.9MB in the beginning and 461.2MB in the end (delta: -171.2MB). Peak memory consumption was 744.3kB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1941 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1163, independent: 1085, independent conditional: 0, independent unconditional: 1085, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 569, independent: 552, independent conditional: 0, independent unconditional: 552, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1163, independent: 533, independent conditional: 0, independent unconditional: 533, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 569, unknown conditional: 0, unknown unconditional: 569] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 148 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 456 IncrementalHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 23 mSDtfsCounter, 456 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=499occurred in iteration=6, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 517 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-23 23:08:19,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...