/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:19:04,535 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:19:04,618 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-SemanticLbe.epf [2023-11-17 15:19:04,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:19:04,651 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:19:04,651 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:19:04,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:19:04,652 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:19:04,653 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:19:04,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:19:04,657 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:19:04,657 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:19:04,657 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:19:04,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:19:04,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:19:04,659 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:19:04,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:19:04,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:19:04,660 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:19:04,660 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:19:04,660 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:19:04,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:19:04,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:19:04,661 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:19:04,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:19:04,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:19:04,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:19:04,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:19:04,664 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:19:04,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:19:04,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:19:04,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:19:04,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:19:04,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:19:04,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:19:04,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:19:04,932 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:19:04,933 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:19:04,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 15:19:06,162 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:19:06,396 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:19:06,397 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 15:19:06,411 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/011fd51b1/69d67d9848ea4bb18347dab483e9bace/FLAG5fb25af4d [2023-11-17 15:19:06,423 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/011fd51b1/69d67d9848ea4bb18347dab483e9bace [2023-11-17 15:19:06,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:19:06,426 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:19:06,427 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:19:06,427 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:19:06,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:19:06,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:19:06" (1/1) ... [2023-11-17 15:19:06,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68cd0dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:06, skipping insertion in model container [2023-11-17 15:19:06,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:19:06" (1/1) ... [2023-11-17 15:19:06,492 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:19:06,630 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/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-17 15:19:06,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:19:06,777 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:19:06,791 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/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-17 15:19:06,832 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:19:06,856 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:19:06,856 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:19:06,861 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:19:06,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:06 WrapperNode [2023-11-17 15:19:06,862 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:19:06,863 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:19:06,863 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:19:06,863 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:19:06,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:06" (1/1) ... [2023-11-17 15:19:06,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:06" (1/1) ... [2023-11-17 15:19:06,895 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-11-17 15:19:06,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:19:06,896 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:19:06,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:19:06,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:19:06,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:06" (1/1) ... [2023-11-17 15:19:06,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:06" (1/1) ... [2023-11-17 15:19:06,908 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:06" (1/1) ... [2023-11-17 15:19:06,909 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:06" (1/1) ... [2023-11-17 15:19:06,915 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:06" (1/1) ... [2023-11-17 15:19:06,921 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:06" (1/1) ... [2023-11-17 15:19:06,934 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:06" (1/1) ... [2023-11-17 15:19:06,935 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:06" (1/1) ... [2023-11-17 15:19:06,938 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:19:06,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:19:06,939 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:19:06,939 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:19:06,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:06" (1/1) ... [2023-11-17 15:19:06,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:19:06,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:19:07,003 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) [2023-11-17 15:19:07,004 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 [2023-11-17 15:19:07,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:19:07,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:19:07,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:19:07,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:19:07,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:19:07,024 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 15:19:07,024 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 15:19:07,024 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 15:19:07,024 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 15:19:07,024 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 15:19:07,024 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 15:19:07,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:19:07,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:19:07,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:19:07,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:19:07,026 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:19:07,133 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:19:07,134 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:19:07,254 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:19:07,263 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:19:07,263 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:19:07,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:19:07 BoogieIcfgContainer [2023-11-17 15:19:07,264 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:19:07,266 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:19:07,266 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:19:07,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:19:07,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:19:06" (1/3) ... [2023-11-17 15:19:07,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e9d52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:19:07, skipping insertion in model container [2023-11-17 15:19:07,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:06" (2/3) ... [2023-11-17 15:19:07,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e9d52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:19:07, skipping insertion in model container [2023-11-17 15:19:07,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:19:07" (3/3) ... [2023-11-17 15:19:07,271 INFO L112 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 15:19:07,285 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:19:07,285 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:19:07,285 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:19:07,332 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:19:07,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 194 flow [2023-11-17 15:19:07,403 INFO L124 PetriNetUnfolderBase]: 2/88 cut-off events. [2023-11-17 15:19:07,403 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:19:07,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-11-17 15:19:07,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 194 flow [2023-11-17 15:19:07,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 73 transitions, 155 flow [2023-11-17 15:19:07,416 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:19:07,452 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 73 transitions, 155 flow [2023-11-17 15:19:07,454 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 73 transitions, 155 flow [2023-11-17 15:19:07,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 73 transitions, 155 flow [2023-11-17 15:19:07,507 INFO L124 PetriNetUnfolderBase]: 1/73 cut-off events. [2023-11-17 15:19:07,507 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:19:07,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 1/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-11-17 15:19:07,509 INFO L119 LiptonReduction]: Number of co-enabled transitions 1356 [2023-11-17 15:19:09,455 INFO L134 LiptonReduction]: Checked pairs total: 1736 [2023-11-17 15:19:09,455 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-11-17 15:19:09,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:19:09,487 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=LoopHeads, 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;@4a17484f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:19:09,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:19:09,496 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:19:09,497 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-17 15:19:09,497 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:19:09,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:09,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:09,498 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)] === [2023-11-17 15:19:09,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:09,504 INFO L85 PathProgramCache]: Analyzing trace with hash -872639533, now seen corresponding path program 1 times [2023-11-17 15:19:09,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:09,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746708979] [2023-11-17 15:19:09,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:09,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:10,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:19:10,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:10,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746708979] [2023-11-17 15:19:10,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746708979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:10,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:10,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:19:10,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926567301] [2023-11-17 15:19:10,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:10,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:19:10,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:10,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:19:10,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:19:10,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 151 [2023-11-17 15:19:10,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 41 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) [2023-11-17 15:19:10,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:10,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 151 [2023-11-17 15:19:10,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:10,245 INFO L124 PetriNetUnfolderBase]: 354/582 cut-off events. [2023-11-17 15:19:10,245 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-17 15:19:10,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 582 events. 354/582 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2408 event pairs, 129 based on Foata normal form. 27/609 useless extension candidates. Maximal degree in co-relation 1192. Up to 400 conditions per place. [2023-11-17 15:19:10,256 INFO L140 encePairwiseOnDemand]: 145/151 looper letters, 23 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2023-11-17 15:19:10,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 127 flow [2023-11-17 15:19:10,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:19:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:19:10,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2023-11-17 15:19:10,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5739514348785872 [2023-11-17 15:19:10,277 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2023-11-17 15:19:10,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2023-11-17 15:19:10,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:10,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2023-11-17 15:19:10,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2023-11-17 15:19:10,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 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) [2023-11-17 15:19:10,293 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 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) [2023-11-17 15:19:10,295 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 41 flow. Second operand 3 states and 260 transitions. [2023-11-17 15:19:10,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 127 flow [2023-11-17 15:19:10,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 122 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:19:10,300 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 67 flow [2023-11-17 15:19:10,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2023-11-17 15:19:10,305 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-11-17 15:19:10,305 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 67 flow [2023-11-17 15:19:10,306 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) [2023-11-17 15:19:10,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:10,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:10,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:19:10,307 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)] === [2023-11-17 15:19:10,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:10,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1282022314, now seen corresponding path program 1 times [2023-11-17 15:19:10,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:10,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494032451] [2023-11-17 15:19:10,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:10,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:19:10,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:10,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494032451] [2023-11-17 15:19:10,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494032451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:10,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:10,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:19:10,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031197161] [2023-11-17 15:19:10,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:10,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:19:10,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:10,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:19:10,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:19:10,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 151 [2023-11-17 15:19:10,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 67 flow. Second operand has 4 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) [2023-11-17 15:19:10,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:10,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 151 [2023-11-17 15:19:10,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:10,624 INFO L124 PetriNetUnfolderBase]: 333/552 cut-off events. [2023-11-17 15:19:10,625 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-17 15:19:10,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 552 events. 333/552 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2097 event pairs, 81 based on Foata normal form. 9/561 useless extension candidates. Maximal degree in co-relation 1378. Up to 271 conditions per place. [2023-11-17 15:19:10,628 INFO L140 encePairwiseOnDemand]: 145/151 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-11-17 15:19:10,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 154 flow [2023-11-17 15:19:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:19:10,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:19:10,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2023-11-17 15:19:10,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5596026490066225 [2023-11-17 15:19:10,633 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 338 transitions. [2023-11-17 15:19:10,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 338 transitions. [2023-11-17 15:19:10,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:10,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 338 transitions. [2023-11-17 15:19:10,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 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) [2023-11-17 15:19:10,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 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) [2023-11-17 15:19:10,638 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 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) [2023-11-17 15:19:10,638 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 67 flow. Second operand 4 states and 338 transitions. [2023-11-17 15:19:10,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 154 flow [2023-11-17 15:19:10,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:19:10,643 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 88 flow [2023-11-17 15:19:10,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-11-17 15:19:10,644 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-11-17 15:19:10,645 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 88 flow [2023-11-17 15:19:10,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2023-11-17 15:19:10,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:10,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:10,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:19:10,647 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)] === [2023-11-17 15:19:10,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:10,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1282022283, now seen corresponding path program 1 times [2023-11-17 15:19:10,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:10,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074990507] [2023-11-17 15:19:10,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:10,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:19:10,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:10,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074990507] [2023-11-17 15:19:10,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074990507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:10,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:10,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:19:10,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921542638] [2023-11-17 15:19:10,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:10,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:19:10,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:10,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:19:10,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:19:10,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 151 [2023-11-17 15:19:10,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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) [2023-11-17 15:19:10,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:10,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 151 [2023-11-17 15:19:10,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:10,949 INFO L124 PetriNetUnfolderBase]: 368/606 cut-off events. [2023-11-17 15:19:10,949 INFO L125 PetriNetUnfolderBase]: For 430/430 co-relation queries the response was YES. [2023-11-17 15:19:10,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1687 conditions, 606 events. 368/606 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2474 event pairs, 31 based on Foata normal form. 12/618 useless extension candidates. Maximal degree in co-relation 1673. Up to 272 conditions per place. [2023-11-17 15:19:10,954 INFO L140 encePairwiseOnDemand]: 144/151 looper letters, 36 selfloop transitions, 17 changer transitions 0/53 dead transitions. [2023-11-17 15:19:10,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 53 transitions, 321 flow [2023-11-17 15:19:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:19:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:19:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 424 transitions. [2023-11-17 15:19:10,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56158940397351 [2023-11-17 15:19:10,956 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 424 transitions. [2023-11-17 15:19:10,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 424 transitions. [2023-11-17 15:19:10,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:10,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 424 transitions. [2023-11-17 15:19:10,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:19:10,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 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) [2023-11-17 15:19:10,960 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 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) [2023-11-17 15:19:10,960 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 88 flow. Second operand 5 states and 424 transitions. [2023-11-17 15:19:10,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 53 transitions, 321 flow [2023-11-17 15:19:10,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 53 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:19:10,965 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 223 flow [2023-11-17 15:19:10,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-11-17 15:19:10,967 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-11-17 15:19:10,967 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 223 flow [2023-11-17 15:19:10,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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) [2023-11-17 15:19:10,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:10,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:10,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:19:10,968 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)] === [2023-11-17 15:19:10,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:10,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1087999099, now seen corresponding path program 1 times [2023-11-17 15:19:10,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:10,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218325261] [2023-11-17 15:19:10,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:10,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:19:11,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:11,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218325261] [2023-11-17 15:19:11,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218325261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:11,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:11,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:19:11,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673009164] [2023-11-17 15:19:11,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:11,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:19:11,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:11,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:19:11,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:19:11,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 151 [2023-11-17 15:19:11,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2023-11-17 15:19:11,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:11,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 151 [2023-11-17 15:19:11,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:11,141 INFO L124 PetriNetUnfolderBase]: 359/591 cut-off events. [2023-11-17 15:19:11,141 INFO L125 PetriNetUnfolderBase]: For 1033/1033 co-relation queries the response was YES. [2023-11-17 15:19:11,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2127 conditions, 591 events. 359/591 cut-off events. For 1033/1033 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2308 event pairs, 142 based on Foata normal form. 2/593 useless extension candidates. Maximal degree in co-relation 2109. Up to 554 conditions per place. [2023-11-17 15:19:11,147 INFO L140 encePairwiseOnDemand]: 147/151 looper letters, 33 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2023-11-17 15:19:11,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 347 flow [2023-11-17 15:19:11,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:19:11,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:19:11,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2023-11-17 15:19:11,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5960264900662252 [2023-11-17 15:19:11,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2023-11-17 15:19:11,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2023-11-17 15:19:11,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:11,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2023-11-17 15:19:11,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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) [2023-11-17 15:19:11,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 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) [2023-11-17 15:19:11,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 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) [2023-11-17 15:19:11,151 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 223 flow. Second operand 3 states and 270 transitions. [2023-11-17 15:19:11,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 347 flow [2023-11-17 15:19:11,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 347 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:19:11,159 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 273 flow [2023-11-17 15:19:11,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-11-17 15:19:11,161 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2023-11-17 15:19:11,161 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 273 flow [2023-11-17 15:19:11,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2023-11-17 15:19:11,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:11,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:11,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:19:11,162 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)] === [2023-11-17 15:19:11,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:11,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1087985676, now seen corresponding path program 1 times [2023-11-17 15:19:11,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:11,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909204714] [2023-11-17 15:19:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:11,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:19:11,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:11,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909204714] [2023-11-17 15:19:11,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909204714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:11,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:11,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:19:11,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415353410] [2023-11-17 15:19:11,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:11,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:19:11,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:11,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:19:11,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:19:11,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 151 [2023-11-17 15:19:11,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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) [2023-11-17 15:19:11,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:11,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 151 [2023-11-17 15:19:11,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:11,391 INFO L124 PetriNetUnfolderBase]: 419/704 cut-off events. [2023-11-17 15:19:11,392 INFO L125 PetriNetUnfolderBase]: For 1694/1694 co-relation queries the response was YES. [2023-11-17 15:19:11,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2543 conditions, 704 events. 419/704 cut-off events. For 1694/1694 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3070 event pairs, 92 based on Foata normal form. 27/731 useless extension candidates. Maximal degree in co-relation 2522. Up to 322 conditions per place. [2023-11-17 15:19:11,398 INFO L140 encePairwiseOnDemand]: 147/151 looper letters, 27 selfloop transitions, 5 changer transitions 18/50 dead transitions. [2023-11-17 15:19:11,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 466 flow [2023-11-17 15:19:11,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:19:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:19:11,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 350 transitions. [2023-11-17 15:19:11,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5794701986754967 [2023-11-17 15:19:11,419 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 350 transitions. [2023-11-17 15:19:11,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 350 transitions. [2023-11-17 15:19:11,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:11,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 350 transitions. [2023-11-17 15:19:11,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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) [2023-11-17 15:19:11,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 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) [2023-11-17 15:19:11,422 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 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) [2023-11-17 15:19:11,422 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 273 flow. Second operand 4 states and 350 transitions. [2023-11-17 15:19:11,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 466 flow [2023-11-17 15:19:11,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 435 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-17 15:19:11,430 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 172 flow [2023-11-17 15:19:11,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2023-11-17 15:19:11,433 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2023-11-17 15:19:11,433 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 172 flow [2023-11-17 15:19:11,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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) [2023-11-17 15:19:11,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:11,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:11,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:19:11,434 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)] === [2023-11-17 15:19:11,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:11,434 INFO L85 PathProgramCache]: Analyzing trace with hash -372476038, now seen corresponding path program 1 times [2023-11-17 15:19:11,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:11,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937601660] [2023-11-17 15:19:11,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:11,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:11,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:19:11,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:11,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937601660] [2023-11-17 15:19:11,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937601660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:11,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:11,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:19:11,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757481027] [2023-11-17 15:19:11,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:11,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:19:11,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:11,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:19:11,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:19:11,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 151 [2023-11-17 15:19:11,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-11-17 15:19:11,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:11,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 151 [2023-11-17 15:19:11,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:11,564 INFO L124 PetriNetUnfolderBase]: 159/296 cut-off events. [2023-11-17 15:19:11,564 INFO L125 PetriNetUnfolderBase]: For 1000/1000 co-relation queries the response was YES. [2023-11-17 15:19:11,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 296 events. 159/296 cut-off events. For 1000/1000 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1061 event pairs, 44 based on Foata normal form. 14/310 useless extension candidates. Maximal degree in co-relation 1106. Up to 241 conditions per place. [2023-11-17 15:19:11,567 INFO L140 encePairwiseOnDemand]: 146/151 looper letters, 36 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-11-17 15:19:11,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 368 flow [2023-11-17 15:19:11,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:19:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:19:11,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-11-17 15:19:11,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5938189845474614 [2023-11-17 15:19:11,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-11-17 15:19:11,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-11-17 15:19:11,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:11,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-11-17 15:19:11,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2023-11-17 15:19:11,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 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) [2023-11-17 15:19:11,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 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) [2023-11-17 15:19:11,573 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 172 flow. Second operand 3 states and 269 transitions. [2023-11-17 15:19:11,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 368 flow [2023-11-17 15:19:11,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 280 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-11-17 15:19:11,576 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 143 flow [2023-11-17 15:19:11,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-11-17 15:19:11,579 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-11-17 15:19:11,579 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 143 flow [2023-11-17 15:19:11,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-11-17 15:19:11,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:11,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:11,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:19:11,580 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)] === [2023-11-17 15:19:11,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:11,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1797573226, now seen corresponding path program 1 times [2023-11-17 15:19:11,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:11,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059040471] [2023-11-17 15:19:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:11,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:19:11,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:11,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059040471] [2023-11-17 15:19:11,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059040471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:11,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:11,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:19:11,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161256562] [2023-11-17 15:19:11,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:11,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:19:11,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:11,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:19:11,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:19:11,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 151 [2023-11-17 15:19:11,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2023-11-17 15:19:11,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:11,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 151 [2023-11-17 15:19:11,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:11,745 INFO L124 PetriNetUnfolderBase]: 99/201 cut-off events. [2023-11-17 15:19:11,746 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2023-11-17 15:19:11,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 201 events. 99/201 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 662 event pairs, 21 based on Foata normal form. 21/222 useless extension candidates. Maximal degree in co-relation 721. Up to 89 conditions per place. [2023-11-17 15:19:11,747 INFO L140 encePairwiseOnDemand]: 146/151 looper letters, 43 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2023-11-17 15:19:11,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 368 flow [2023-11-17 15:19:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:19:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:19:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2023-11-17 15:19:11,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5927152317880795 [2023-11-17 15:19:11,749 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 358 transitions. [2023-11-17 15:19:11,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 358 transitions. [2023-11-17 15:19:11,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:11,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 358 transitions. [2023-11-17 15:19:11,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-11-17 15:19:11,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 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) [2023-11-17 15:19:11,751 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 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) [2023-11-17 15:19:11,752 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 143 flow. Second operand 4 states and 358 transitions. [2023-11-17 15:19:11,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 368 flow [2023-11-17 15:19:11,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 50 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:19:11,754 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 179 flow [2023-11-17 15:19:11,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2023-11-17 15:19:11,754 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2023-11-17 15:19:11,754 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 179 flow [2023-11-17 15:19:11,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2023-11-17 15:19:11,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:11,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:11,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:19:11,755 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)] === [2023-11-17 15:19:11,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:11,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1059156924, now seen corresponding path program 1 times [2023-11-17 15:19:11,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:11,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239684966] [2023-11-17 15:19:11,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:11,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:11,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:19:11,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:11,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239684966] [2023-11-17 15:19:11,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239684966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:11,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:11,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:19:11,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571907679] [2023-11-17 15:19:11,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:11,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:19:11,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:11,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:19:11,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:19:11,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 151 [2023-11-17 15:19:11,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 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) [2023-11-17 15:19:11,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:11,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 151 [2023-11-17 15:19:11,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:11,891 INFO L124 PetriNetUnfolderBase]: 84/168 cut-off events. [2023-11-17 15:19:11,891 INFO L125 PetriNetUnfolderBase]: For 292/292 co-relation queries the response was YES. [2023-11-17 15:19:11,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 168 events. 84/168 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 515 event pairs, 18 based on Foata normal form. 11/179 useless extension candidates. Maximal degree in co-relation 665. Up to 70 conditions per place. [2023-11-17 15:19:11,893 INFO L140 encePairwiseOnDemand]: 146/151 looper letters, 33 selfloop transitions, 10 changer transitions 7/50 dead transitions. [2023-11-17 15:19:11,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 392 flow [2023-11-17 15:19:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:19:11,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:19:11,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 438 transitions. [2023-11-17 15:19:11,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801324503311258 [2023-11-17 15:19:11,894 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 438 transitions. [2023-11-17 15:19:11,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 438 transitions. [2023-11-17 15:19:11,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:11,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 438 transitions. [2023-11-17 15:19:11,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 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) [2023-11-17 15:19:11,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 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) [2023-11-17 15:19:11,898 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 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) [2023-11-17 15:19:11,898 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 179 flow. Second operand 5 states and 438 transitions. [2023-11-17 15:19:11,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 392 flow [2023-11-17 15:19:11,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 368 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-17 15:19:11,900 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 186 flow [2023-11-17 15:19:11,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-11-17 15:19:11,902 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-11-17 15:19:11,902 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 186 flow [2023-11-17 15:19:11,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 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) [2023-11-17 15:19:11,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:11,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:11,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:19:11,903 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)] === [2023-11-17 15:19:11,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1918117477, now seen corresponding path program 1 times [2023-11-17 15:19:11,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:11,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382500667] [2023-11-17 15:19:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:11,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:12,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:19:12,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:12,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382500667] [2023-11-17 15:19:12,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382500667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:12,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:12,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:19:12,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403459686] [2023-11-17 15:19:12,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:12,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:19:12,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:12,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:19:12,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:19:12,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 151 [2023-11-17 15:19:12,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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) [2023-11-17 15:19:12,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:12,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 151 [2023-11-17 15:19:12,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:12,110 INFO L124 PetriNetUnfolderBase]: 100/199 cut-off events. [2023-11-17 15:19:12,110 INFO L125 PetriNetUnfolderBase]: For 379/379 co-relation queries the response was YES. [2023-11-17 15:19:12,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 199 events. 100/199 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 669 event pairs, 7 based on Foata normal form. 1/200 useless extension candidates. Maximal degree in co-relation 801. Up to 96 conditions per place. [2023-11-17 15:19:12,111 INFO L140 encePairwiseOnDemand]: 144/151 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2023-11-17 15:19:12,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 368 flow [2023-11-17 15:19:12,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:19:12,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:19:12,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 410 transitions. [2023-11-17 15:19:12,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543046357615894 [2023-11-17 15:19:12,113 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 410 transitions. [2023-11-17 15:19:12,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 410 transitions. [2023-11-17 15:19:12,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:12,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 410 transitions. [2023-11-17 15:19:12,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-17 15:19:12,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 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) [2023-11-17 15:19:12,116 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 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) [2023-11-17 15:19:12,116 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 186 flow. Second operand 5 states and 410 transitions. [2023-11-17 15:19:12,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 368 flow [2023-11-17 15:19:12,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 331 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-17 15:19:12,118 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-11-17 15:19:12,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-11-17 15:19:12,119 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-11-17 15:19:12,119 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-11-17 15:19:12,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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) [2023-11-17 15:19:12,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 15:19:12,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 15:19:12,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 15:19:12,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 15:19:12,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:19:12,123 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:12,125 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:19:12,125 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:19:12,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:19:12 BasicIcfg [2023-11-17 15:19:12,128 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:19:12,129 INFO L158 Benchmark]: Toolchain (without parser) took 5703.21ms. Allocated memory was 282.1MB in the beginning and 338.7MB in the end (delta: 56.6MB). Free memory was 228.9MB in the beginning and 143.2MB in the end (delta: 85.7MB). Peak memory consumption was 142.7MB. Max. memory is 8.0GB. [2023-11-17 15:19:12,129 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 177.2MB. Free memory was 128.8MB in the beginning and 128.7MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:19:12,129 INFO L158 Benchmark]: CACSL2BoogieTranslator took 435.45ms. Allocated memory is still 282.1MB. Free memory was 228.5MB in the beginning and 208.3MB in the end (delta: 20.2MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 15:19:12,130 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.25ms. Allocated memory is still 282.1MB. Free memory was 208.3MB in the beginning and 206.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:19:12,130 INFO L158 Benchmark]: Boogie Preprocessor took 41.42ms. Allocated memory is still 282.1MB. Free memory was 206.2MB in the beginning and 204.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:19:12,130 INFO L158 Benchmark]: RCFGBuilder took 326.07ms. Allocated memory is still 282.1MB. Free memory was 204.8MB in the beginning and 191.1MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-17 15:19:12,130 INFO L158 Benchmark]: TraceAbstraction took 4862.13ms. Allocated memory was 282.1MB in the beginning and 338.7MB in the end (delta: 56.6MB). Free memory was 190.5MB in the beginning and 143.2MB in the end (delta: 47.3MB). Peak memory consumption was 104.9MB. Max. memory is 8.0GB. [2023-11-17 15:19:12,131 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 177.2MB. Free memory was 128.8MB in the beginning and 128.7MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 435.45ms. Allocated memory is still 282.1MB. Free memory was 228.5MB in the beginning and 208.3MB in the end (delta: 20.2MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.25ms. Allocated memory is still 282.1MB. Free memory was 208.3MB in the beginning and 206.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.42ms. Allocated memory is still 282.1MB. Free memory was 206.2MB in the beginning and 204.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 326.07ms. Allocated memory is still 282.1MB. Free memory was 204.8MB in the beginning and 191.1MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4862.13ms. Allocated memory was 282.1MB in the beginning and 338.7MB in the end (delta: 56.6MB). Free memory was 190.5MB in the beginning and 143.2MB in the end (delta: 47.3MB). Peak memory consumption was 104.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 82 PlacesBefore, 26 PlacesAfterwards, 73 TransitionsBefore, 16 TransitionsAfterwards, 1356 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 1736 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1224, independent: 1163, independent conditional: 0, independent unconditional: 1163, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 921, independent: 887, independent conditional: 0, independent unconditional: 887, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 921, independent: 876, independent conditional: 0, independent unconditional: 876, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, independent: 11, independent conditional: 0, independent unconditional: 11, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 137, independent: 42, independent conditional: 0, independent unconditional: 42, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1224, independent: 276, independent conditional: 0, independent unconditional: 276, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 921, unknown conditional: 0, unknown unconditional: 921] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 117 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: 4.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 340 IncrementalHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 0 mSDtfsCounter, 340 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=273occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 388 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! [2023-11-17 15:19:12,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...