/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/safe005_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:08:20,445 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:08:20,507 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 23:08:20,511 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:08:20,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:08:20,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:08:20,553 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:08:20,554 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:08:20,555 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:08:20,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:08:20,558 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:08:20,558 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:08:20,559 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:08:20,560 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:08:20,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:08:20,560 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:08:20,561 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:08:20,561 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:08:20,561 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:08:20,561 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:08:20,562 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:08:20,562 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:08:20,563 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:08:20,563 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:08:20,563 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:08:20,564 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:08:20,564 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:08:20,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:08:20,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:08:20,565 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:08:20,565 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:08:20,566 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:08:20,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:08:20,566 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:08:20,566 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:08:20,566 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:08:20,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:08:20,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:08:20,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:08:20,916 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:08:20,917 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:08:20,918 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2023-08-23 23:08:22,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:08:22,360 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:08:22,361 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2023-08-23 23:08:22,382 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7500a046e/45dd7b7e37a243239dc2843d2252cd3c/FLAG9ac75f377 [2023-08-23 23:08:22,399 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7500a046e/45dd7b7e37a243239dc2843d2252cd3c [2023-08-23 23:08:22,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:08:22,405 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:08:22,407 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:08:22,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:08:22,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:08:22,412 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:08:22" (1/1) ... [2023-08-23 23:08:22,413 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26adb2d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:22, skipping insertion in model container [2023-08-23 23:08:22,413 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:08:22" (1/1) ... [2023-08-23 23:08:22,460 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:08:22,626 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/safe005_tso.i[945,958] [2023-08-23 23:08:22,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:08:22,805 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:08:22,821 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/safe005_tso.i[945,958] [2023-08-23 23:08:22,838 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:08:22,840 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:08:22,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:08:22,898 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:08:22,898 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:08:22,904 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:08:22,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:22 WrapperNode [2023-08-23 23:08:22,905 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:08:22,906 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:08:22,906 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:08:22,906 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:08:22,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:22" (1/1) ... [2023-08-23 23:08:22,931 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:22" (1/1) ... [2023-08-23 23:08:22,947 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-23 23:08:22,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:08:22,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:08:22,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:08:22,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:08:22,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:22" (1/1) ... [2023-08-23 23:08:22,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:22" (1/1) ... [2023-08-23 23:08:22,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:22" (1/1) ... [2023-08-23 23:08:22,959 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:22" (1/1) ... [2023-08-23 23:08:22,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:22" (1/1) ... [2023-08-23 23:08:22,965 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:22" (1/1) ... [2023-08-23 23:08:22,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:22" (1/1) ... [2023-08-23 23:08:22,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:22" (1/1) ... [2023-08-23 23:08:22,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:08:22,970 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:08:22,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:08:22,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:08:22,971 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:22" (1/1) ... [2023-08-23 23:08:22,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:08:22,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:08:23,014 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 23:08:23,021 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 23:08:23,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:08:23,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-23 23:08:23,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:08:23,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:08:23,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:08:23,041 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-23 23:08:23,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-23 23:08:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-23 23:08:23,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-23 23:08:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-23 23:08:23,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-23 23:08:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:08:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-23 23:08:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:08:23,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:08:23,044 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 23:08:23,172 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:08:23,174 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:08:23,356 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:08:23,362 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:08:23,362 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-23 23:08:23,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:08:23 BoogieIcfgContainer [2023-08-23 23:08:23,364 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:08:23,366 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:08:23,366 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:08:23,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:08:23,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:08:22" (1/3) ... [2023-08-23 23:08:23,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d534399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:08:23, skipping insertion in model container [2023-08-23 23:08:23,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:22" (2/3) ... [2023-08-23 23:08:23,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d534399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:08:23, skipping insertion in model container [2023-08-23 23:08:23,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:08:23" (3/3) ... [2023-08-23 23:08:23,371 INFO L112 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2023-08-23 23:08:23,386 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:08:23,387 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-23 23:08:23,387 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:08:23,471 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-23 23:08:23,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-08-23 23:08:23,584 INFO L124 PetriNetUnfolderBase]: 2/82 cut-off events. [2023-08-23 23:08:23,585 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:08:23,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-23 23:08:23,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-08-23 23:08:23,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-08-23 23:08:23,597 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:08:23,608 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-23 23:08:23,613 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-23 23:08:23,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-08-23 23:08:23,638 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2023-08-23 23:08:23,639 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:08:23,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-23 23:08:23,641 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-23 23:08:25,606 INFO L134 LiptonReduction]: Checked pairs total: 2098 [2023-08-23 23:08:25,607 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-08-23 23:08:25,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:08:25,624 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;@45372acd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:08:25,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-23 23:08:25,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:08:25,629 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-23 23:08:25,629 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:08:25,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:25,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:25,630 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 23:08:25,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:25,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1331089238, now seen corresponding path program 1 times [2023-08-23 23:08:25,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:25,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035618226] [2023-08-23 23:08:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:25,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:26,029 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 23:08:26,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:26,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035618226] [2023-08-23 23:08:26,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035618226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:26,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:26,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 23:08:26,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892539728] [2023-08-23 23:08:26,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:26,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:08:26,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:26,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:08:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:08:26,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 143 [2023-08-23 23:08:26,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:26,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:26,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 143 [2023-08-23 23:08:26,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:26,171 INFO L124 PetriNetUnfolderBase]: 143/265 cut-off events. [2023-08-23 23:08:26,171 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-23 23:08:26,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 265 events. 143/265 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1077 event pairs, 53 based on Foata normal form. 9/270 useless extension candidates. Maximal degree in co-relation 525. Up to 154 conditions per place. [2023-08-23 23:08:26,174 INFO L140 encePairwiseOnDemand]: 139/143 looper letters, 17 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-08-23 23:08:26,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 91 flow [2023-08-23 23:08:26,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:08:26,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:08:26,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2023-08-23 23:08:26,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5827505827505828 [2023-08-23 23:08:26,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2023-08-23 23:08:26,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2023-08-23 23:08:26,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:26,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2023-08-23 23:08:26,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:26,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:26,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:26,197 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 250 transitions. [2023-08-23 23:08:26,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 91 flow [2023-08-23 23:08:26,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 88 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-23 23:08:26,200 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2023-08-23 23:08:26,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-08-23 23:08:26,205 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-08-23 23:08:26,205 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2023-08-23 23:08:26,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:26,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:26,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:26,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:08:26,206 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 23:08:26,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:26,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1685907729, now seen corresponding path program 1 times [2023-08-23 23:08:26,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:26,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259144315] [2023-08-23 23:08:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:26,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:26,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:26,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259144315] [2023-08-23 23:08:26,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259144315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:26,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:26,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:08:26,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648385503] [2023-08-23 23:08:26,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:26,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:08:26,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:26,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:08:26,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:08:26,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-08-23 23:08:26,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:26,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:26,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-08-23 23:08:26,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:26,519 INFO L124 PetriNetUnfolderBase]: 531/862 cut-off events. [2023-08-23 23:08:26,519 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2023-08-23 23:08:26,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1907 conditions, 862 events. 531/862 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3831 event pairs, 39 based on Foata normal form. 48/910 useless extension candidates. Maximal degree in co-relation 1896. Up to 421 conditions per place. [2023-08-23 23:08:26,528 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2023-08-23 23:08:26,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 182 flow [2023-08-23 23:08:26,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:08:26,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:08:26,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2023-08-23 23:08:26,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5541958041958042 [2023-08-23 23:08:26,535 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 317 transitions. [2023-08-23 23:08:26,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 317 transitions. [2023-08-23 23:08:26,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:26,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 317 transitions. [2023-08-23 23:08:26,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:26,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:26,543 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:26,543 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 317 transitions. [2023-08-23 23:08:26,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 182 flow [2023-08-23 23:08:26,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:08:26,545 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 101 flow [2023-08-23 23:08:26,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2023-08-23 23:08:26,546 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-08-23 23:08:26,547 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 101 flow [2023-08-23 23:08:26,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:26,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:26,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:26,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 23:08:26,555 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 23:08:26,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:26,557 INFO L85 PathProgramCache]: Analyzing trace with hash -724801001, now seen corresponding path program 1 times [2023-08-23 23:08:26,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:26,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314021032] [2023-08-23 23:08:26,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:26,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:26,713 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 23:08:26,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:26,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314021032] [2023-08-23 23:08:26,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314021032] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:26,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:26,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:08:26,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040590599] [2023-08-23 23:08:26,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:26,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:08:26,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:26,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:08:26,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:08:26,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 143 [2023-08-23 23:08:26,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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 23:08:26,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:26,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 143 [2023-08-23 23:08:26,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:26,856 INFO L124 PetriNetUnfolderBase]: 616/1063 cut-off events. [2023-08-23 23:08:26,856 INFO L125 PetriNetUnfolderBase]: For 816/816 co-relation queries the response was YES. [2023-08-23 23:08:26,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2846 conditions, 1063 events. 616/1063 cut-off events. For 816/816 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5413 event pairs, 107 based on Foata normal form. 36/1085 useless extension candidates. Maximal degree in co-relation 2832. Up to 470 conditions per place. [2023-08-23 23:08:26,863 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 27 selfloop transitions, 5 changer transitions 8/42 dead transitions. [2023-08-23 23:08:26,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 42 transitions, 244 flow [2023-08-23 23:08:26,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:08:26,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:08:26,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 324 transitions. [2023-08-23 23:08:26,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664335664335665 [2023-08-23 23:08:26,865 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 324 transitions. [2023-08-23 23:08:26,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 324 transitions. [2023-08-23 23:08:26,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:26,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 324 transitions. [2023-08-23 23:08:26,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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 23:08:26,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:26,868 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:26,868 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 101 flow. Second operand 4 states and 324 transitions. [2023-08-23 23:08:26,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 42 transitions, 244 flow [2023-08-23 23:08:26,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 244 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-23 23:08:26,871 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 117 flow [2023-08-23 23:08:26,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-08-23 23:08:26,873 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-08-23 23:08:26,875 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 117 flow [2023-08-23 23:08:26,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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 23:08:26,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:26,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:26,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 23:08:26,877 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 23:08:26,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:26,878 INFO L85 PathProgramCache]: Analyzing trace with hash -954009263, now seen corresponding path program 1 times [2023-08-23 23:08:26,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:26,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924037521] [2023-08-23 23:08:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:26,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:27,007 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 23:08:27,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:27,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924037521] [2023-08-23 23:08:27,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924037521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:27,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:27,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:08:27,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825886108] [2023-08-23 23:08:27,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:27,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:08:27,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:27,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:08:27,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:08:27,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-08-23 23:08:27,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:27,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-08-23 23:08:27,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:27,194 INFO L124 PetriNetUnfolderBase]: 652/1107 cut-off events. [2023-08-23 23:08:27,194 INFO L125 PetriNetUnfolderBase]: For 1100/1100 co-relation queries the response was YES. [2023-08-23 23:08:27,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3103 conditions, 1107 events. 652/1107 cut-off events. For 1100/1100 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5387 event pairs, 103 based on Foata normal form. 36/1143 useless extension candidates. Maximal degree in co-relation 3086. Up to 296 conditions per place. [2023-08-23 23:08:27,199 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 31 selfloop transitions, 8 changer transitions 23/62 dead transitions. [2023-08-23 23:08:27,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 373 flow [2023-08-23 23:08:27,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:08:27,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:08:27,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 543 transitions. [2023-08-23 23:08:27,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424575424575424 [2023-08-23 23:08:27,201 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 543 transitions. [2023-08-23 23:08:27,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 543 transitions. [2023-08-23 23:08:27,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:27,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 543 transitions. [2023-08-23 23:08:27,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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 23:08:27,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,206 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,206 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 117 flow. Second operand 7 states and 543 transitions. [2023-08-23 23:08:27,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 373 flow [2023-08-23 23:08:27,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 62 transitions, 350 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-23 23:08:27,213 INFO L231 Difference]: Finished difference. Result has 40 places, 23 transitions, 125 flow [2023-08-23 23:08:27,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=125, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2023-08-23 23:08:27,214 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-08-23 23:08:27,214 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 23 transitions, 125 flow [2023-08-23 23:08:27,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:27,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:27,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-23 23:08:27,215 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:08:27,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1296776372, now seen corresponding path program 1 times [2023-08-23 23:08:27,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:27,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054526535] [2023-08-23 23:08:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:27,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:27,327 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 23:08:27,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:27,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054526535] [2023-08-23 23:08:27,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054526535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:27,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:27,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:08:27,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707421941] [2023-08-23 23:08:27,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:27,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:08:27,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:27,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:08:27,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:08:27,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-08-23 23:08:27,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 23 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:27,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-08-23 23:08:27,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:27,429 INFO L124 PetriNetUnfolderBase]: 309/620 cut-off events. [2023-08-23 23:08:27,430 INFO L125 PetriNetUnfolderBase]: For 790/790 co-relation queries the response was YES. [2023-08-23 23:08:27,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 620 events. 309/620 cut-off events. For 790/790 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3158 event pairs, 79 based on Foata normal form. 24/636 useless extension candidates. Maximal degree in co-relation 1656. Up to 318 conditions per place. [2023-08-23 23:08:27,432 INFO L140 encePairwiseOnDemand]: 140/143 looper letters, 18 selfloop transitions, 3 changer transitions 11/35 dead transitions. [2023-08-23 23:08:27,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 220 flow [2023-08-23 23:08:27,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:08:27,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:08:27,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2023-08-23 23:08:27,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2023-08-23 23:08:27,434 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 325 transitions. [2023-08-23 23:08:27,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 325 transitions. [2023-08-23 23:08:27,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:27,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 325 transitions. [2023-08-23 23:08:27,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 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 23:08:27,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,438 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,438 INFO L175 Difference]: Start difference. First operand has 40 places, 23 transitions, 125 flow. Second operand 4 states and 325 transitions. [2023-08-23 23:08:27,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 220 flow [2023-08-23 23:08:27,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 206 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-23 23:08:27,440 INFO L231 Difference]: Finished difference. Result has 38 places, 19 transitions, 92 flow [2023-08-23 23:08:27,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=19} [2023-08-23 23:08:27,443 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-23 23:08:27,443 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 19 transitions, 92 flow [2023-08-23 23:08:27,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:27,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:27,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-23 23:08:27,444 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 23:08:27,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:27,444 INFO L85 PathProgramCache]: Analyzing trace with hash 489017960, now seen corresponding path program 1 times [2023-08-23 23:08:27,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:27,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176820703] [2023-08-23 23:08:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:27,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:27,533 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 23:08:27,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:27,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176820703] [2023-08-23 23:08:27,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176820703] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:27,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:27,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 23:08:27,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105691838] [2023-08-23 23:08:27,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:27,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:08:27,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:27,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:08:27,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:08:27,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 143 [2023-08-23 23:08:27,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 19 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 23:08:27,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:27,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 143 [2023-08-23 23:08:27,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:27,573 INFO L124 PetriNetUnfolderBase]: 114/229 cut-off events. [2023-08-23 23:08:27,574 INFO L125 PetriNetUnfolderBase]: For 206/207 co-relation queries the response was YES. [2023-08-23 23:08:27,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 229 events. 114/229 cut-off events. For 206/207 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 874 event pairs, 50 based on Foata normal form. 2/222 useless extension candidates. Maximal degree in co-relation 602. Up to 129 conditions per place. [2023-08-23 23:08:27,575 INFO L140 encePairwiseOnDemand]: 140/143 looper letters, 15 selfloop transitions, 2 changer transitions 4/23 dead transitions. [2023-08-23 23:08:27,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 23 transitions, 145 flow [2023-08-23 23:08:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:08:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:08:27,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-08-23 23:08:27,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578088578088578 [2023-08-23 23:08:27,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-08-23 23:08:27,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-08-23 23:08:27,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:27,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-08-23 23:08:27,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 23:08:27,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,579 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,579 INFO L175 Difference]: Start difference. First operand has 38 places, 19 transitions, 92 flow. Second operand 3 states and 248 transitions. [2023-08-23 23:08:27,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 23 transitions, 145 flow [2023-08-23 23:08:27,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 23 transitions, 133 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-23 23:08:27,582 INFO L231 Difference]: Finished difference. Result has 36 places, 17 transitions, 73 flow [2023-08-23 23:08:27,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=36, PETRI_TRANSITIONS=17} [2023-08-23 23:08:27,584 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-08-23 23:08:27,584 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 17 transitions, 73 flow [2023-08-23 23:08:27,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 23:08:27,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:27,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:27,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-23 23:08:27,586 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 23:08:27,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:27,587 INFO L85 PathProgramCache]: Analyzing trace with hash 2140472578, now seen corresponding path program 1 times [2023-08-23 23:08:27,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:27,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708626768] [2023-08-23 23:08:27,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:27,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:27,683 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 23:08:27,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:27,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708626768] [2023-08-23 23:08:27,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708626768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:27,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:27,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:08:27,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697647582] [2023-08-23 23:08:27,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:27,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:08:27,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:27,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:08:27,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:08:27,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-08-23 23:08:27,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 17 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:27,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-08-23 23:08:27,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:27,721 INFO L124 PetriNetUnfolderBase]: 55/128 cut-off events. [2023-08-23 23:08:27,721 INFO L125 PetriNetUnfolderBase]: For 81/85 co-relation queries the response was YES. [2023-08-23 23:08:27,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 128 events. 55/128 cut-off events. For 81/85 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 427 event pairs, 15 based on Foata normal form. 6/130 useless extension candidates. Maximal degree in co-relation 331. Up to 100 conditions per place. [2023-08-23 23:08:27,722 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2023-08-23 23:08:27,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 24 transitions, 139 flow [2023-08-23 23:08:27,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:08:27,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:08:27,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-23 23:08:27,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5687645687645687 [2023-08-23 23:08:27,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-23 23:08:27,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-23 23:08:27,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:27,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-23 23:08:27,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,725 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,726 INFO L175 Difference]: Start difference. First operand has 36 places, 17 transitions, 73 flow. Second operand 3 states and 244 transitions. [2023-08-23 23:08:27,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 24 transitions, 139 flow [2023-08-23 23:08:27,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 127 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-23 23:08:27,727 INFO L231 Difference]: Finished difference. Result has 34 places, 19 transitions, 84 flow [2023-08-23 23:08:27,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=34, PETRI_TRANSITIONS=19} [2023-08-23 23:08:27,728 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-23 23:08:27,728 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 19 transitions, 84 flow [2023-08-23 23:08:27,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:27,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:27,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-23 23:08:27,729 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 23:08:27,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:27,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1477974888, now seen corresponding path program 1 times [2023-08-23 23:08:27,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:27,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319830097] [2023-08-23 23:08:27,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:27,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:27,852 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 23:08:27,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:27,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319830097] [2023-08-23 23:08:27,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319830097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:27,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:27,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:08:27,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665133539] [2023-08-23 23:08:27,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:27,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:08:27,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:27,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:08:27,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:08:27,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-08-23 23:08:27,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 19 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:27,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-08-23 23:08:27,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:27,894 INFO L124 PetriNetUnfolderBase]: 26/78 cut-off events. [2023-08-23 23:08:27,894 INFO L125 PetriNetUnfolderBase]: For 39/48 co-relation queries the response was YES. [2023-08-23 23:08:27,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 78 events. 26/78 cut-off events. For 39/48 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 224 event pairs, 5 based on Foata normal form. 13/89 useless extension candidates. Maximal degree in co-relation 251. Up to 36 conditions per place. [2023-08-23 23:08:27,895 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 16 selfloop transitions, 5 changer transitions 5/29 dead transitions. [2023-08-23 23:08:27,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 175 flow [2023-08-23 23:08:27,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:08:27,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:08:27,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 323 transitions. [2023-08-23 23:08:27,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5646853146853147 [2023-08-23 23:08:27,897 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 323 transitions. [2023-08-23 23:08:27,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 323 transitions. [2023-08-23 23:08:27,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:27,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 323 transitions. [2023-08-23 23:08:27,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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 23:08:27,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,899 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,899 INFO L175 Difference]: Start difference. First operand has 34 places, 19 transitions, 84 flow. Second operand 4 states and 323 transitions. [2023-08-23 23:08:27,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 175 flow [2023-08-23 23:08:27,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:08:27,906 INFO L231 Difference]: Finished difference. Result has 37 places, 19 transitions, 99 flow [2023-08-23 23:08:27,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=81, 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=4, PETRI_FLOW=99, PETRI_PLACES=37, PETRI_TRANSITIONS=19} [2023-08-23 23:08:27,908 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-23 23:08:27,908 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 19 transitions, 99 flow [2023-08-23 23:08:27,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:27,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:27,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-23 23:08:27,909 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 23:08:27,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:27,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1029223890, now seen corresponding path program 1 times [2023-08-23 23:08:27,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:27,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782841868] [2023-08-23 23:08:27,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:27,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:28,059 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 23:08:28,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:28,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782841868] [2023-08-23 23:08:28,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782841868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:28,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:28,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:08:28,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713452042] [2023-08-23 23:08:28,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:28,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:08:28,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:28,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:08:28,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:08:28,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-08-23 23:08:28,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 19 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:28,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:28,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-08-23 23:08:28,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:28,099 INFO L124 PetriNetUnfolderBase]: 18/55 cut-off events. [2023-08-23 23:08:28,099 INFO L125 PetriNetUnfolderBase]: For 92/104 co-relation queries the response was YES. [2023-08-23 23:08:28,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 55 events. 18/55 cut-off events. For 92/104 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 128 event pairs, 4 based on Foata normal form. 12/65 useless extension candidates. Maximal degree in co-relation 189. Up to 22 conditions per place. [2023-08-23 23:08:28,099 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2023-08-23 23:08:28,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 23 transitions, 152 flow [2023-08-23 23:08:28,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:08:28,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:08:28,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 391 transitions. [2023-08-23 23:08:28,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468531468531469 [2023-08-23 23:08:28,101 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 391 transitions. [2023-08-23 23:08:28,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 391 transitions. [2023-08-23 23:08:28,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:28,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 391 transitions. [2023-08-23 23:08:28,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:28,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:28,104 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:28,104 INFO L175 Difference]: Start difference. First operand has 37 places, 19 transitions, 99 flow. Second operand 5 states and 391 transitions. [2023-08-23 23:08:28,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 23 transitions, 152 flow [2023-08-23 23:08:28,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 23 transitions, 133 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-23 23:08:28,105 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-08-23 23:08:28,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-08-23 23:08:28,106 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-08-23 23:08:28,107 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-08-23 23:08:28,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:28,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-23 23:08:28,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-23 23:08:28,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-23 23:08:28,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-23 23:08:28,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-23 23:08:28,111 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:28,115 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 23:08:28,116 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 23:08:28,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 11:08:28 BasicIcfg [2023-08-23 23:08:28,120 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 23:08:28,121 INFO L158 Benchmark]: Toolchain (without parser) took 5715.89ms. Allocated memory was 339.7MB in the beginning and 434.1MB in the end (delta: 94.4MB). Free memory was 314.6MB in the beginning and 389.8MB in the end (delta: -75.2MB). Peak memory consumption was 20.7MB. Max. memory is 16.0GB. [2023-08-23 23:08:28,121 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 339.7MB. Free memory is still 316.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:08:28,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 497.83ms. Allocated memory is still 339.7MB. Free memory was 314.2MB in the beginning and 294.1MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-23 23:08:28,122 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.91ms. Allocated memory is still 339.7MB. Free memory was 294.1MB in the beginning and 292.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:08:28,122 INFO L158 Benchmark]: Boogie Preprocessor took 21.38ms. Allocated memory is still 339.7MB. Free memory was 292.0MB in the beginning and 290.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:08:28,122 INFO L158 Benchmark]: RCFGBuilder took 393.71ms. Allocated memory is still 339.7MB. Free memory was 290.6MB in the beginning and 276.9MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-23 23:08:28,122 INFO L158 Benchmark]: TraceAbstraction took 4754.23ms. Allocated memory was 339.7MB in the beginning and 434.1MB in the end (delta: 94.4MB). Free memory was 276.0MB in the beginning and 389.8MB in the end (delta: -113.8MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:08:28,126 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 339.7MB. Free memory is still 316.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 497.83ms. Allocated memory is still 339.7MB. Free memory was 314.2MB in the beginning and 294.1MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.91ms. Allocated memory is still 339.7MB. Free memory was 294.1MB in the beginning and 292.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.38ms. Allocated memory is still 339.7MB. Free memory was 292.0MB in the beginning and 290.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 393.71ms. Allocated memory is still 339.7MB. Free memory was 290.6MB in the beginning and 276.9MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4754.23ms. Allocated memory was 339.7MB in the beginning and 434.1MB in the end (delta: 94.4MB). Free memory was 276.0MB in the beginning and 389.8MB in the end (delta: -113.8MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 58 TotalNumberOfCompositions, 2098 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1269, independent: 1185, independent conditional: 0, independent unconditional: 1185, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 586, independent: 562, independent conditional: 0, independent unconditional: 562, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1269, independent: 623, independent conditional: 0, independent unconditional: 623, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 586, unknown conditional: 0, unknown unconditional: 586] , Statistics on independence cache: Total cache size (in pairs): 54, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 110 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 350 IncrementalHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 12 mSDtfsCounter, 350 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=4, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 280 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 23:08:28,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...