/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/safe015_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 15:18:31,350 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:18:31,418 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 15:18:31,440 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:18:31,441 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:18:31,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:18:31,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:18:31,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:18:31,443 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:18:31,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:18:31,448 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:18:31,448 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:18:31,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:18:31,450 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:18:31,450 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:18:31,450 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:18:31,450 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:18:31,450 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:18:31,451 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:18:31,451 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:18:31,451 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:18:31,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:18:31,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:18:31,452 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:18:31,452 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:18:31,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:18:31,453 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:18:31,453 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:18:31,454 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:18:31,454 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:18:31,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:18:31,455 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:18:31,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:18:31,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:18:31,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:18:31,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:18:31,708 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:18:31,708 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:18:31,710 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 15:18:32,969 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:18:33,241 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:18:33,242 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 15:18:33,260 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/807df1e37/7715d85318dc4e8b905ee7bef48d3bb4/FLAG5b5b4810f [2023-11-17 15:18:33,281 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/807df1e37/7715d85318dc4e8b905ee7bef48d3bb4 [2023-11-17 15:18:33,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:18:33,285 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:18:33,287 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:18:33,287 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:18:33,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:18:33,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:18:33" (1/1) ... [2023-11-17 15:18:33,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d41ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:33, skipping insertion in model container [2023-11-17 15:18:33,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:18:33" (1/1) ... [2023-11-17 15:18:33,341 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:18:33,510 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-17 15:18:33,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:18:33,693 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:18:33,707 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-17 15:18:33,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:18:33,769 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:18:33,769 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:18:33,774 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:18:33,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:33 WrapperNode [2023-11-17 15:18:33,775 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:18:33,776 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:18:33,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:18:33,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:18:33,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:33" (1/1) ... [2023-11-17 15:18:33,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:33" (1/1) ... [2023-11-17 15:18:33,838 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-11-17 15:18:33,838 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:18:33,839 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:18:33,839 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:18:33,839 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:18:33,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:33" (1/1) ... [2023-11-17 15:18:33,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:33" (1/1) ... [2023-11-17 15:18:33,864 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:33" (1/1) ... [2023-11-17 15:18:33,865 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:33" (1/1) ... [2023-11-17 15:18:33,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:33" (1/1) ... [2023-11-17 15:18:33,871 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:33" (1/1) ... [2023-11-17 15:18:33,872 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:33" (1/1) ... [2023-11-17 15:18:33,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:33" (1/1) ... [2023-11-17 15:18:33,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:18:33,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:18:33,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:18:33,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:18:33,888 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:33" (1/1) ... [2023-11-17 15:18:33,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:18:33,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:18:33,918 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 15:18:33,952 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 15:18:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:18:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:18:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:18:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:18:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:18:33,963 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 15:18:33,963 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 15:18:33,963 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 15:18:33,963 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 15:18:33,964 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 15:18:33,964 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 15:18:33,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:18:33,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:18:33,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:18:33,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:18:33,965 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 15:18:34,118 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:18:34,120 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:18:34,315 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:18:34,324 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:18:34,324 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:18:34,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:18:34 BoogieIcfgContainer [2023-11-17 15:18:34,325 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:18:34,328 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:18:34,328 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:18:34,331 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:18:34,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:18:33" (1/3) ... [2023-11-17 15:18:34,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f47763c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:18:34, skipping insertion in model container [2023-11-17 15:18:34,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:33" (2/3) ... [2023-11-17 15:18:34,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f47763c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:18:34, skipping insertion in model container [2023-11-17 15:18:34,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:18:34" (3/3) ... [2023-11-17 15:18:34,333 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 15:18:34,368 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:18:34,368 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:18:34,368 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:18:34,425 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:18:34,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 196 flow [2023-11-17 15:18:34,495 INFO L124 PetriNetUnfolderBase]: 2/89 cut-off events. [2023-11-17 15:18:34,497 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:18:34,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-11-17 15:18:34,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 196 flow [2023-11-17 15:18:34,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2023-11-17 15:18:34,512 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:18:34,525 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 74 transitions, 157 flow [2023-11-17 15:18:34,528 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 74 transitions, 157 flow [2023-11-17 15:18:34,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 74 transitions, 157 flow [2023-11-17 15:18:34,551 INFO L124 PetriNetUnfolderBase]: 1/74 cut-off events. [2023-11-17 15:18:34,551 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:18:34,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 1/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-11-17 15:18:34,562 INFO L119 LiptonReduction]: Number of co-enabled transitions 1436 [2023-11-17 15:18:36,620 INFO L134 LiptonReduction]: Checked pairs total: 2143 [2023-11-17 15:18:36,620 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-11-17 15:18:36,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:18:36,642 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;@6c48b6ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:18:36,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:18:36,647 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:18:36,647 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 15:18:36,647 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:18:36,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:36,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:36,649 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 15:18:36,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:36,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1454163521, now seen corresponding path program 1 times [2023-11-17 15:18:36,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:36,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632861511] [2023-11-17 15:18:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:36,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:37,115 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 15:18:37,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:37,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632861511] [2023-11-17 15:18:37,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632861511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:37,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:37,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:18:37,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839018541] [2023-11-17 15:18:37,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:37,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:18:37,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:37,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:18:37,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:18:37,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 153 [2023-11-17 15:18:37,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:37,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:37,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 153 [2023-11-17 15:18:37,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:37,373 INFO L124 PetriNetUnfolderBase]: 562/908 cut-off events. [2023-11-17 15:18:37,373 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-17 15:18:37,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 908 events. 562/908 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3960 event pairs, 238 based on Foata normal form. 53/961 useless extension candidates. Maximal degree in co-relation 1862. Up to 464 conditions per place. [2023-11-17 15:18:37,385 INFO L140 encePairwiseOnDemand]: 145/153 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-11-17 15:18:37,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-11-17 15:18:37,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:18:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:18:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2023-11-17 15:18:37,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5599128540305011 [2023-11-17 15:18:37,406 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2023-11-17 15:18:37,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2023-11-17 15:18:37,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:37,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2023-11-17 15:18:37,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 15:18:37,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 15:18:37,421 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 15:18:37,423 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 257 transitions. [2023-11-17 15:18:37,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-11-17 15:18:37,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:18:37,429 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 94 flow [2023-11-17 15:18:37,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-11-17 15:18:37,434 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-17 15:18:37,435 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2023-11-17 15:18:37,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:37,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:37,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:37,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:18:37,437 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 15:18:37,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:37,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2129396967, now seen corresponding path program 1 times [2023-11-17 15:18:37,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:37,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000383284] [2023-11-17 15:18:37,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:37,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:37,673 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 15:18:37,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:37,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000383284] [2023-11-17 15:18:37,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000383284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:37,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:37,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:18:37,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680098930] [2023-11-17 15:18:37,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:37,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:37,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:37,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:37,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:37,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 153 [2023-11-17 15:18:37,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 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 15:18:37,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:37,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 153 [2023-11-17 15:18:37,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:37,801 INFO L124 PetriNetUnfolderBase]: 526/853 cut-off events. [2023-11-17 15:18:37,802 INFO L125 PetriNetUnfolderBase]: For 365/365 co-relation queries the response was YES. [2023-11-17 15:18:37,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 853 events. 526/853 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3511 event pairs, 110 based on Foata normal form. 10/863 useless extension candidates. Maximal degree in co-relation 2435. Up to 345 conditions per place. [2023-11-17 15:18:37,808 INFO L140 encePairwiseOnDemand]: 145/153 looper letters, 30 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2023-11-17 15:18:37,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 224 flow [2023-11-17 15:18:37,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:18:37,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:18:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2023-11-17 15:18:37,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545751633986928 [2023-11-17 15:18:37,812 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 334 transitions. [2023-11-17 15:18:37,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 334 transitions. [2023-11-17 15:18:37,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:37,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 334 transitions. [2023-11-17 15:18:37,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 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 15:18:37,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 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 15:18:37,818 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 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 15:18:37,819 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 334 transitions. [2023-11-17 15:18:37,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 224 flow [2023-11-17 15:18:37,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:18:37,825 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 138 flow [2023-11-17 15:18:37,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-17 15:18:37,826 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-11-17 15:18:37,826 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 138 flow [2023-11-17 15:18:37,828 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 15:18:37,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:37,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:37,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:18:37,830 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 15:18:37,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:37,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2129396905, now seen corresponding path program 1 times [2023-11-17 15:18:37,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:37,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941042512] [2023-11-17 15:18:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:37,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:37,957 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 15:18:37,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:37,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941042512] [2023-11-17 15:18:37,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941042512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:37,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:37,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:18:37,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487061868] [2023-11-17 15:18:37,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:37,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:37,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:37,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:37,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:37,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 153 [2023-11-17 15:18:37,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:37,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:37,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 153 [2023-11-17 15:18:37,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:38,097 INFO L124 PetriNetUnfolderBase]: 662/1085 cut-off events. [2023-11-17 15:18:38,097 INFO L125 PetriNetUnfolderBase]: For 816/816 co-relation queries the response was YES. [2023-11-17 15:18:38,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3339 conditions, 1085 events. 662/1085 cut-off events. For 816/816 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4972 event pairs, 112 based on Foata normal form. 33/1118 useless extension candidates. Maximal degree in co-relation 3324. Up to 488 conditions per place. [2023-11-17 15:18:38,105 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 33 selfloop transitions, 5 changer transitions 16/54 dead transitions. [2023-11-17 15:18:38,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 54 transitions, 378 flow [2023-11-17 15:18:38,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:18:38,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:18:38,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2023-11-17 15:18:38,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5751633986928104 [2023-11-17 15:18:38,107 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2023-11-17 15:18:38,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2023-11-17 15:18:38,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:38,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2023-11-17 15:18:38,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:38,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 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 15:18:38,111 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 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 15:18:38,111 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 138 flow. Second operand 4 states and 352 transitions. [2023-11-17 15:18:38,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 54 transitions, 378 flow [2023-11-17 15:18:38,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 54 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:18:38,131 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 148 flow [2023-11-17 15:18:38,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-11-17 15:18:38,132 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-11-17 15:18:38,132 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 148 flow [2023-11-17 15:18:38,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:38,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:38,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:38,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:18:38,133 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 15:18:38,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:38,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1586807822, now seen corresponding path program 1 times [2023-11-17 15:18:38,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:38,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345587461] [2023-11-17 15:18:38,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:38,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:38,243 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 15:18:38,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:38,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345587461] [2023-11-17 15:18:38,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345587461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:38,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:38,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:18:38,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246196288] [2023-11-17 15:18:38,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:38,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:38,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:38,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:38,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:38,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 153 [2023-11-17 15:18:38,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:38,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:38,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 153 [2023-11-17 15:18:38,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:38,347 INFO L124 PetriNetUnfolderBase]: 384/641 cut-off events. [2023-11-17 15:18:38,347 INFO L125 PetriNetUnfolderBase]: For 618/618 co-relation queries the response was YES. [2023-11-17 15:18:38,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2108 conditions, 641 events. 384/641 cut-off events. For 618/618 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2569 event pairs, 76 based on Foata normal form. 6/647 useless extension candidates. Maximal degree in co-relation 2090. Up to 300 conditions per place. [2023-11-17 15:18:38,351 INFO L140 encePairwiseOnDemand]: 145/153 looper letters, 37 selfloop transitions, 12 changer transitions 0/49 dead transitions. [2023-11-17 15:18:38,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 49 transitions, 346 flow [2023-11-17 15:18:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:18:38,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:18:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2023-11-17 15:18:38,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-11-17 15:18:38,353 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2023-11-17 15:18:38,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2023-11-17 15:18:38,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:38,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2023-11-17 15:18:38,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 15:18:38,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 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 15:18:38,356 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 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 15:18:38,356 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 148 flow. Second operand 4 states and 340 transitions. [2023-11-17 15:18:38,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 49 transitions, 346 flow [2023-11-17 15:18:38,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 325 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-17 15:18:38,361 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 237 flow [2023-11-17 15:18:38,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=237, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-11-17 15:18:38,362 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-11-17 15:18:38,362 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 237 flow [2023-11-17 15:18:38,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:38,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:38,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:38,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:18:38,363 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 15:18:38,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:38,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1946447146, now seen corresponding path program 1 times [2023-11-17 15:18:38,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:38,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059855175] [2023-11-17 15:18:38,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:38,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:38,461 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 15:18:38,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:38,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059855175] [2023-11-17 15:18:38,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059855175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:38,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:38,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:18:38,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103077062] [2023-11-17 15:18:38,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:38,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:18:38,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:38,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:18:38,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:18:38,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 153 [2023-11-17 15:18:38,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 15:18:38,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:38,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 153 [2023-11-17 15:18:38,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:38,544 INFO L124 PetriNetUnfolderBase]: 341/584 cut-off events. [2023-11-17 15:18:38,545 INFO L125 PetriNetUnfolderBase]: For 937/939 co-relation queries the response was YES. [2023-11-17 15:18:38,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2090 conditions, 584 events. 341/584 cut-off events. For 937/939 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2417 event pairs, 118 based on Foata normal form. 2/568 useless extension candidates. Maximal degree in co-relation 2071. Up to 513 conditions per place. [2023-11-17 15:18:38,550 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 35 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2023-11-17 15:18:38,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 388 flow [2023-11-17 15:18:38,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:18:38,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:18:38,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-11-17 15:18:38,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947712418300654 [2023-11-17 15:18:38,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-11-17 15:18:38,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-11-17 15:18:38,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:38,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-11-17 15:18:38,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 15:18:38,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 15:18:38,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 15:18:38,555 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 237 flow. Second operand 3 states and 273 transitions. [2023-11-17 15:18:38,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 388 flow [2023-11-17 15:18:38,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 382 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:18:38,559 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 284 flow [2023-11-17 15:18:38,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-11-17 15:18:38,561 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-11-17 15:18:38,561 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 284 flow [2023-11-17 15:18:38,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 15:18:38,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:38,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:38,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:18:38,562 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 15:18:38,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:38,563 INFO L85 PathProgramCache]: Analyzing trace with hash -199222468, now seen corresponding path program 1 times [2023-11-17 15:18:38,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:38,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876224779] [2023-11-17 15:18:38,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:38,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:38,649 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 15:18:38,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:38,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876224779] [2023-11-17 15:18:38,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876224779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:38,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:38,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:18:38,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975333503] [2023-11-17 15:18:38,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:38,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:38,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:38,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:38,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:38,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 153 [2023-11-17 15:18:38,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:38,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:38,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 153 [2023-11-17 15:18:38,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:38,758 INFO L124 PetriNetUnfolderBase]: 343/613 cut-off events. [2023-11-17 15:18:38,759 INFO L125 PetriNetUnfolderBase]: For 2280/2299 co-relation queries the response was YES. [2023-11-17 15:18:38,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 613 events. 343/613 cut-off events. For 2280/2299 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2905 event pairs, 51 based on Foata normal form. 38/645 useless extension candidates. Maximal degree in co-relation 2282. Up to 338 conditions per place. [2023-11-17 15:18:38,762 INFO L140 encePairwiseOnDemand]: 147/153 looper letters, 65 selfloop transitions, 7 changer transitions 27/102 dead transitions. [2023-11-17 15:18:38,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 102 transitions, 1031 flow [2023-11-17 15:18:38,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:18:38,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:18:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 437 transitions. [2023-11-17 15:18:38,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5712418300653594 [2023-11-17 15:18:38,765 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 437 transitions. [2023-11-17 15:18:38,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 437 transitions. [2023-11-17 15:18:38,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:38,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 437 transitions. [2023-11-17 15:18:38,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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 15:18:38,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 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 15:18:38,769 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 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 15:18:38,769 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 284 flow. Second operand 5 states and 437 transitions. [2023-11-17 15:18:38,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 102 transitions, 1031 flow [2023-11-17 15:18:38,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 102 transitions, 1016 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:18:38,774 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 328 flow [2023-11-17 15:18:38,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-11-17 15:18:38,777 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-11-17 15:18:38,777 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 328 flow [2023-11-17 15:18:38,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:38,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:38,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:38,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:18:38,778 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 15:18:38,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:38,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1110810042, now seen corresponding path program 1 times [2023-11-17 15:18:38,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:38,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876485783] [2023-11-17 15:18:38,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:38,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:38,906 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 15:18:38,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:38,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876485783] [2023-11-17 15:18:38,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876485783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:38,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:38,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:18:38,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348533674] [2023-11-17 15:18:38,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:38,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:18:38,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:38,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:18:38,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:18:38,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 153 [2023-11-17 15:18:38,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 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 15:18:38,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:38,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 153 [2023-11-17 15:18:38,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:39,037 INFO L124 PetriNetUnfolderBase]: 279/529 cut-off events. [2023-11-17 15:18:39,037 INFO L125 PetriNetUnfolderBase]: For 2500/2550 co-relation queries the response was YES. [2023-11-17 15:18:39,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2380 conditions, 529 events. 279/529 cut-off events. For 2500/2550 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2550 event pairs, 21 based on Foata normal form. 51/574 useless extension candidates. Maximal degree in co-relation 2354. Up to 169 conditions per place. [2023-11-17 15:18:39,040 INFO L140 encePairwiseOnDemand]: 147/153 looper letters, 71 selfloop transitions, 11 changer transitions 41/126 dead transitions. [2023-11-17 15:18:39,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 126 transitions, 1290 flow [2023-11-17 15:18:39,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:18:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:18:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 609 transitions. [2023-11-17 15:18:39,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5686274509803921 [2023-11-17 15:18:39,043 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 609 transitions. [2023-11-17 15:18:39,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 609 transitions. [2023-11-17 15:18:39,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:39,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 609 transitions. [2023-11-17 15:18:39,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:39,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 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 15:18:39,049 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 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 15:18:39,049 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 328 flow. Second operand 7 states and 609 transitions. [2023-11-17 15:18:39,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 126 transitions, 1290 flow [2023-11-17 15:18:39,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 126 transitions, 1290 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:18:39,055 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 396 flow [2023-11-17 15:18:39,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=396, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-11-17 15:18:39,057 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2023-11-17 15:18:39,057 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 396 flow [2023-11-17 15:18:39,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 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 15:18:39,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:39,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:39,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:18:39,059 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 15:18:39,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:39,059 INFO L85 PathProgramCache]: Analyzing trace with hash 143233509, now seen corresponding path program 1 times [2023-11-17 15:18:39,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:39,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597400820] [2023-11-17 15:18:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:39,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:39,173 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 15:18:39,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:39,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597400820] [2023-11-17 15:18:39,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597400820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:39,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:39,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:18:39,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009202207] [2023-11-17 15:18:39,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:39,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:18:39,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:39,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:18:39,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:18:39,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 153 [2023-11-17 15:18:39,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 396 flow. Second operand has 5 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 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 15:18:39,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:39,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 153 [2023-11-17 15:18:39,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:39,307 INFO L124 PetriNetUnfolderBase]: 347/657 cut-off events. [2023-11-17 15:18:39,308 INFO L125 PetriNetUnfolderBase]: For 2969/2969 co-relation queries the response was YES. [2023-11-17 15:18:39,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3445 conditions, 657 events. 347/657 cut-off events. For 2969/2969 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3236 event pairs, 49 based on Foata normal form. 7/664 useless extension candidates. Maximal degree in co-relation 3414. Up to 219 conditions per place. [2023-11-17 15:18:39,311 INFO L140 encePairwiseOnDemand]: 145/153 looper letters, 34 selfloop transitions, 12 changer transitions 56/102 dead transitions. [2023-11-17 15:18:39,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 102 transitions, 1020 flow [2023-11-17 15:18:39,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:18:39,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:18:39,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 502 transitions. [2023-11-17 15:18:39,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468409586056645 [2023-11-17 15:18:39,313 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 502 transitions. [2023-11-17 15:18:39,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 502 transitions. [2023-11-17 15:18:39,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:39,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 502 transitions. [2023-11-17 15:18:39,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 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 15:18:39,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 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 15:18:39,320 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 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 15:18:39,320 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 396 flow. Second operand 6 states and 502 transitions. [2023-11-17 15:18:39,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 102 transitions, 1020 flow [2023-11-17 15:18:39,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 102 transitions, 925 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-11-17 15:18:39,332 INFO L231 Difference]: Finished difference. Result has 56 places, 32 transitions, 289 flow [2023-11-17 15:18:39,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=289, PETRI_PLACES=56, PETRI_TRANSITIONS=32} [2023-11-17 15:18:39,333 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 29 predicate places. [2023-11-17 15:18:39,333 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 32 transitions, 289 flow [2023-11-17 15:18:39,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 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 15:18:39,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:39,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:39,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:18:39,335 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 15:18:39,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:39,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1055209186, now seen corresponding path program 1 times [2023-11-17 15:18:39,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:39,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562809759] [2023-11-17 15:18:39,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:39,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:39,453 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 15:18:39,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:39,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562809759] [2023-11-17 15:18:39,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562809759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:39,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:39,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:18:39,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958827051] [2023-11-17 15:18:39,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:39,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:18:39,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:39,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:18:39,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:18:39,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 153 [2023-11-17 15:18:39,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 32 transitions, 289 flow. Second operand has 6 states, 6 states have (on average 80.33333333333333) internal successors, (482), 6 states have internal predecessors, (482), 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 15:18:39,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:39,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 153 [2023-11-17 15:18:39,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:39,532 INFO L124 PetriNetUnfolderBase]: 111/222 cut-off events. [2023-11-17 15:18:39,533 INFO L125 PetriNetUnfolderBase]: For 1217/1226 co-relation queries the response was YES. [2023-11-17 15:18:39,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 222 events. 111/222 cut-off events. For 1217/1226 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 785 event pairs, 18 based on Foata normal form. 7/224 useless extension candidates. Maximal degree in co-relation 1107. Up to 82 conditions per place. [2023-11-17 15:18:39,534 INFO L140 encePairwiseOnDemand]: 147/153 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2023-11-17 15:18:39,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 694 flow [2023-11-17 15:18:39,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:18:39,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:18:39,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 589 transitions. [2023-11-17 15:18:39,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5499533146591971 [2023-11-17 15:18:39,536 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 589 transitions. [2023-11-17 15:18:39,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 589 transitions. [2023-11-17 15:18:39,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:39,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 589 transitions. [2023-11-17 15:18:39,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.14285714285714) internal successors, (589), 7 states have internal predecessors, (589), 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 15:18:39,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 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 15:18:39,541 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 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 15:18:39,541 INFO L175 Difference]: Start difference. First operand has 56 places, 32 transitions, 289 flow. Second operand 7 states and 589 transitions. [2023-11-17 15:18:39,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 694 flow [2023-11-17 15:18:39,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 62 transitions, 616 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-17 15:18:39,544 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-11-17 15:18:39,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-11-17 15:18:39,545 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-11-17 15:18:39,545 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-11-17 15:18:39,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.33333333333333) internal successors, (482), 6 states have internal predecessors, (482), 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 15:18:39,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 15:18:39,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 15:18:39,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 15:18:39,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 15:18:39,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:18:39,552 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:39,555 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:18:39,555 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:18:39,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:18:39 BasicIcfg [2023-11-17 15:18:39,559 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:18:39,560 INFO L158 Benchmark]: Toolchain (without parser) took 6275.16ms. Allocated memory was 222.3MB in the beginning and 310.4MB in the end (delta: 88.1MB). Free memory was 173.0MB in the beginning and 115.0MB in the end (delta: 58.0MB). Peak memory consumption was 146.4MB. Max. memory is 8.0GB. [2023-11-17 15:18:39,560 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 222.3MB. Free memory is still 175.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:18:39,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.73ms. Allocated memory is still 222.3MB. Free memory was 173.0MB in the beginning and 152.4MB in the end (delta: 20.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 15:18:39,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.90ms. Allocated memory is still 222.3MB. Free memory was 152.4MB in the beginning and 150.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:18:39,561 INFO L158 Benchmark]: Boogie Preprocessor took 36.48ms. Allocated memory is still 222.3MB. Free memory was 150.3MB in the beginning and 148.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:18:39,561 INFO L158 Benchmark]: RCFGBuilder took 449.59ms. Allocated memory is still 222.3MB. Free memory was 148.9MB in the beginning and 135.6MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-11-17 15:18:39,561 INFO L158 Benchmark]: TraceAbstraction took 5231.61ms. Allocated memory was 222.3MB in the beginning and 310.4MB in the end (delta: 88.1MB). Free memory was 134.9MB in the beginning and 115.0MB in the end (delta: 19.9MB). Peak memory consumption was 108.7MB. Max. memory is 8.0GB. [2023-11-17 15:18:39,562 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 222.3MB. Free memory is still 175.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 487.73ms. Allocated memory is still 222.3MB. Free memory was 173.0MB in the beginning and 152.4MB in the end (delta: 20.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.90ms. Allocated memory is still 222.3MB. Free memory was 152.4MB in the beginning and 150.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.48ms. Allocated memory is still 222.3MB. Free memory was 150.3MB in the beginning and 148.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 449.59ms. Allocated memory is still 222.3MB. Free memory was 148.9MB in the beginning and 135.6MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 5231.61ms. Allocated memory was 222.3MB in the beginning and 310.4MB in the end (delta: 88.1MB). Free memory was 134.9MB in the beginning and 115.0MB in the end (delta: 19.9MB). Peak memory consumption was 108.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 83 PlacesBefore, 27 PlacesAfterwards, 74 TransitionsBefore, 17 TransitionsAfterwards, 1436 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2143 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1457, independent: 1384, independent conditional: 0, independent unconditional: 1384, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1042, independent: 992, independent conditional: 0, independent unconditional: 992, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1042, independent: 977, independent conditional: 0, independent unconditional: 977, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 65, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 175, independent: 55, independent conditional: 0, independent unconditional: 55, dependent: 121, dependent conditional: 0, dependent unconditional: 121, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1457, independent: 392, independent conditional: 0, independent unconditional: 392, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 1042, unknown conditional: 0, unknown unconditional: 1042] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 72, Positive conditional cache size: 0, Positive unconditional cache size: 72, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, 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, 119 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: 5.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 161 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 503 IncrementalHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 6 mSDtfsCounter, 503 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=396occurred in iteration=7, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 434 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 15:18:39,588 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...