/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/safe037.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:20:00,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:20:00,538 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 15:20:00,564 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:20:00,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:20:00,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:20:00,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:20:00,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:20:00,567 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:20:00,570 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:20:00,571 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:20:00,571 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:20:00,571 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:20:00,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:20:00,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:20:00,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:20:00,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:20:00,573 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:20:00,573 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:20:00,573 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:20:00,573 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:20:00,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:20:00,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:20:00,574 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:20:00,574 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:20:00,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:20:00,575 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:20:00,575 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:20:00,575 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:20:00,575 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:20:00,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:20:00,576 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:20:00,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:20:00,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:20:00,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:20:00,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:20:00,805 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:20:00,807 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:20:00,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037.i [2023-11-17 15:20:01,951 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:20:02,155 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:20:02,157 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037.i [2023-11-17 15:20:02,172 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ceabb23c/71676cd0ae3b4f068458653c759aaf36/FLAG6497dc645 [2023-11-17 15:20:02,185 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ceabb23c/71676cd0ae3b4f068458653c759aaf36 [2023-11-17 15:20:02,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:20:02,187 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:20:02,189 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:20:02,190 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:20:02,193 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:20:02,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:20:02" (1/1) ... [2023-11-17 15:20:02,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3027b073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:02, skipping insertion in model container [2023-11-17 15:20:02,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:20:02" (1/1) ... [2023-11-17 15:20:02,238 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:20:02,333 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/safe037.i[941,954] [2023-11-17 15:20:02,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:20:02,436 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:20:02,448 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/safe037.i[941,954] [2023-11-17 15:20:02,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:20:02,505 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:20:02,505 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:20:02,510 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:20:02,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:02 WrapperNode [2023-11-17 15:20:02,513 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:20:02,514 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:20:02,514 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:20:02,514 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:20:02,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:02" (1/1) ... [2023-11-17 15:20:02,529 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:02" (1/1) ... [2023-11-17 15:20:02,550 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-11-17 15:20:02,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:20:02,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:20:02,551 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:20:02,551 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:20:02,565 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:02" (1/1) ... [2023-11-17 15:20:02,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:02" (1/1) ... [2023-11-17 15:20:02,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:02" (1/1) ... [2023-11-17 15:20:02,579 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:02" (1/1) ... [2023-11-17 15:20:02,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:02" (1/1) ... [2023-11-17 15:20:02,583 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:02" (1/1) ... [2023-11-17 15:20:02,584 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:02" (1/1) ... [2023-11-17 15:20:02,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:02" (1/1) ... [2023-11-17 15:20:02,587 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:20:02,587 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:20:02,587 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:20:02,587 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:20:02,588 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:02" (1/1) ... [2023-11-17 15:20:02,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:20:02,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:20:02,635 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 15:20:02,642 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 15:20:02,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:20:02,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:20:02,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:20:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:20:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:20:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 15:20:02,661 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 15:20:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 15:20:02,661 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 15:20:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 15:20:02,661 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 15:20:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:20:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:20:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:20:02,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:20:02,663 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 15:20:02,748 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:20:02,750 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:20:02,880 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:20:02,888 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:20:02,888 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:20:02,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:20:02 BoogieIcfgContainer [2023-11-17 15:20:02,889 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:20:02,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:20:02,891 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:20:02,892 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:20:02,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:20:02" (1/3) ... [2023-11-17 15:20:02,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edf0cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:20:02, skipping insertion in model container [2023-11-17 15:20:02,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:02" (2/3) ... [2023-11-17 15:20:02,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edf0cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:20:02, skipping insertion in model container [2023-11-17 15:20:02,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:20:02" (3/3) ... [2023-11-17 15:20:02,894 INFO L112 eAbstractionObserver]: Analyzing ICFG safe037.i [2023-11-17 15:20:02,905 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:20:02,905 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:20:02,905 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:20:02,957 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:20:02,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 96 transitions, 204 flow [2023-11-17 15:20:03,017 INFO L124 PetriNetUnfolderBase]: 2/93 cut-off events. [2023-11-17 15:20:03,017 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:20:03,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2023-11-17 15:20:03,030 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 96 transitions, 204 flow [2023-11-17 15:20:03,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 78 transitions, 165 flow [2023-11-17 15:20:03,036 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:20:03,043 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 78 transitions, 165 flow [2023-11-17 15:20:03,048 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 78 transitions, 165 flow [2023-11-17 15:20:03,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 78 transitions, 165 flow [2023-11-17 15:20:03,065 INFO L124 PetriNetUnfolderBase]: 1/78 cut-off events. [2023-11-17 15:20:03,065 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:20:03,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 78 events. 1/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-17 15:20:03,067 INFO L119 LiptonReduction]: Number of co-enabled transitions 1584 [2023-11-17 15:20:04,723 INFO L134 LiptonReduction]: Checked pairs total: 1986 [2023-11-17 15:20:04,723 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-11-17 15:20:04,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:20:04,737 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;@69596521, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:20:04,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:20:04,740 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:20:04,740 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-17 15:20:04,740 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:20:04,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:04,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:04,741 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 15:20:04,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash -386567025, now seen corresponding path program 1 times [2023-11-17 15:20:04,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:04,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331234992] [2023-11-17 15:20:04,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:04,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:05,036 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 15:20:05,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:05,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331234992] [2023-11-17 15:20:05,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331234992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:05,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:05,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:20:05,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971412388] [2023-11-17 15:20:05,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:05,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:20:05,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:05,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:20:05,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:20:05,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 162 [2023-11-17 15:20:05,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 15:20:05,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:05,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 162 [2023-11-17 15:20:05,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:05,176 INFO L124 PetriNetUnfolderBase]: 261/440 cut-off events. [2023-11-17 15:20:05,176 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-17 15:20:05,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 440 events. 261/440 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1558 event pairs, 79 based on Foata normal form. 27/467 useless extension candidates. Maximal degree in co-relation 916. Up to 333 conditions per place. [2023-11-17 15:20:05,183 INFO L140 encePairwiseOnDemand]: 156/162 looper letters, 26 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2023-11-17 15:20:05,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 135 flow [2023-11-17 15:20:05,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:20:05,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:20:05,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-11-17 15:20:05,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2023-11-17 15:20:05,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-11-17 15:20:05,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-11-17 15:20:05,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:05,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-11-17 15:20:05,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 15:20:05,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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 15:20:05,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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 15:20:05,211 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 288 transitions. [2023-11-17 15:20:05,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 135 flow [2023-11-17 15:20:05,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:20:05,214 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 66 flow [2023-11-17 15:20:05,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, 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=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-11-17 15:20:05,218 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-11-17 15:20:05,218 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 66 flow [2023-11-17 15:20:05,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 15:20:05,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:05,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:05,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:20:05,219 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 15:20:05,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:05,221 INFO L85 PathProgramCache]: Analyzing trace with hash -519501923, now seen corresponding path program 1 times [2023-11-17 15:20:05,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:05,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942028380] [2023-11-17 15:20:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:05,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:05,335 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 15:20:05,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:05,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942028380] [2023-11-17 15:20:05,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942028380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:05,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:05,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:20:05,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746572850] [2023-11-17 15:20:05,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:05,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:20:05,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:05,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:20:05,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:20:05,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 162 [2023-11-17 15:20:05,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 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 15:20:05,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:05,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 162 [2023-11-17 15:20:05,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:05,413 INFO L124 PetriNetUnfolderBase]: 153/278 cut-off events. [2023-11-17 15:20:05,414 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-17 15:20:05,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 278 events. 153/278 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 904 event pairs, 58 based on Foata normal form. 27/305 useless extension candidates. Maximal degree in co-relation 715. Up to 108 conditions per place. [2023-11-17 15:20:05,415 INFO L140 encePairwiseOnDemand]: 157/162 looper letters, 34 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2023-11-17 15:20:05,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 41 transitions, 202 flow [2023-11-17 15:20:05,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:20:05,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:20:05,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 382 transitions. [2023-11-17 15:20:05,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5895061728395061 [2023-11-17 15:20:05,431 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 382 transitions. [2023-11-17 15:20:05,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 382 transitions. [2023-11-17 15:20:05,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:05,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 382 transitions. [2023-11-17 15:20:05,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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 15:20:05,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 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 15:20:05,434 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 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 15:20:05,434 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 66 flow. Second operand 4 states and 382 transitions. [2023-11-17 15:20:05,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 41 transitions, 202 flow [2023-11-17 15:20:05,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 41 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:20:05,435 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 102 flow [2023-11-17 15:20:05,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-11-17 15:20:05,436 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-11-17 15:20:05,436 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 102 flow [2023-11-17 15:20:05,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 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 15:20:05,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:05,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:05,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:20:05,437 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 15:20:05,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:05,437 INFO L85 PathProgramCache]: Analyzing trace with hash 812138326, now seen corresponding path program 1 times [2023-11-17 15:20:05,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:05,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102057843] [2023-11-17 15:20:05,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:05,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:05,531 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 15:20:05,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:05,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102057843] [2023-11-17 15:20:05,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102057843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:05,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:05,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:20:05,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109638021] [2023-11-17 15:20:05,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:05,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:20:05,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:05,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:20:05,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:20:05,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 162 [2023-11-17 15:20:05,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:05,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:05,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 162 [2023-11-17 15:20:05,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:05,584 INFO L124 PetriNetUnfolderBase]: 135/242 cut-off events. [2023-11-17 15:20:05,584 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2023-11-17 15:20:05,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 242 events. 135/242 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 774 event pairs, 56 based on Foata normal form. 9/251 useless extension candidates. Maximal degree in co-relation 676. Up to 108 conditions per place. [2023-11-17 15:20:05,586 INFO L140 encePairwiseOnDemand]: 157/162 looper letters, 31 selfloop transitions, 10 changer transitions 0/41 dead transitions. [2023-11-17 15:20:05,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 226 flow [2023-11-17 15:20:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:20:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:20:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 467 transitions. [2023-11-17 15:20:05,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5765432098765432 [2023-11-17 15:20:05,588 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 467 transitions. [2023-11-17 15:20:05,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 467 transitions. [2023-11-17 15:20:05,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:05,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 467 transitions. [2023-11-17 15:20:05,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 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 15:20:05,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 15:20:05,610 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 15:20:05,610 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 102 flow. Second operand 5 states and 467 transitions. [2023-11-17 15:20:05,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 226 flow [2023-11-17 15:20:05,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 212 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 15:20:05,612 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 116 flow [2023-11-17 15:20:05,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-11-17 15:20:05,613 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-11-17 15:20:05,613 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 116 flow [2023-11-17 15:20:05,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:05,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:05,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:05,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:20:05,614 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 15:20:05,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:05,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1827921407, now seen corresponding path program 1 times [2023-11-17 15:20:05,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:05,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354447222] [2023-11-17 15:20:05,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:05,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:05,714 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 15:20:05,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:05,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354447222] [2023-11-17 15:20:05,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354447222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:05,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:05,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:20:05,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069862510] [2023-11-17 15:20:05,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:05,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:20:05,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:05,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:20:05,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:20:05,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 162 [2023-11-17 15:20:05,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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 15:20:05,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:05,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 162 [2023-11-17 15:20:05,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:05,779 INFO L124 PetriNetUnfolderBase]: 157/289 cut-off events. [2023-11-17 15:20:05,779 INFO L125 PetriNetUnfolderBase]: For 325/325 co-relation queries the response was YES. [2023-11-17 15:20:05,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 289 events. 157/289 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1097 event pairs, 15 based on Foata normal form. 1/290 useless extension candidates. Maximal degree in co-relation 868. Up to 202 conditions per place. [2023-11-17 15:20:05,781 INFO L140 encePairwiseOnDemand]: 157/162 looper letters, 40 selfloop transitions, 4 changer transitions 4/48 dead transitions. [2023-11-17 15:20:05,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 348 flow [2023-11-17 15:20:05,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:20:05,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:20:05,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2023-11-17 15:20:05,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5540123456790124 [2023-11-17 15:20:05,782 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 359 transitions. [2023-11-17 15:20:05,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 359 transitions. [2023-11-17 15:20:05,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:05,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 359 transitions. [2023-11-17 15:20:05,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 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 15:20:05,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 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 15:20:05,785 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 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 15:20:05,785 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 116 flow. Second operand 4 states and 359 transitions. [2023-11-17 15:20:05,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 348 flow [2023-11-17 15:20:05,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 48 transitions, 292 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-17 15:20:05,788 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 119 flow [2023-11-17 15:20:05,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-11-17 15:20:05,788 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-11-17 15:20:05,788 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 119 flow [2023-11-17 15:20:05,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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 15:20:05,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:05,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:05,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:20:05,789 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 15:20:05,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:05,790 INFO L85 PathProgramCache]: Analyzing trace with hash 418448857, now seen corresponding path program 2 times [2023-11-17 15:20:05,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:05,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852042262] [2023-11-17 15:20:05,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:05,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:05,878 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 15:20:05,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:05,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852042262] [2023-11-17 15:20:05,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852042262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:05,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:05,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:20:05,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196534407] [2023-11-17 15:20:05,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:05,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:20:05,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:05,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:20:05,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:20:05,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 162 [2023-11-17 15:20:05,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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 15:20:05,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:05,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 162 [2023-11-17 15:20:05,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:05,952 INFO L124 PetriNetUnfolderBase]: 193/362 cut-off events. [2023-11-17 15:20:05,954 INFO L125 PetriNetUnfolderBase]: For 375/375 co-relation queries the response was YES. [2023-11-17 15:20:05,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 362 events. 193/362 cut-off events. For 375/375 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1454 event pairs, 21 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 1185. Up to 222 conditions per place. [2023-11-17 15:20:05,959 INFO L140 encePairwiseOnDemand]: 157/162 looper letters, 42 selfloop transitions, 5 changer transitions 6/53 dead transitions. [2023-11-17 15:20:05,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 53 transitions, 356 flow [2023-11-17 15:20:05,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:20:05,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:20:05,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2023-11-17 15:20:05,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5540123456790124 [2023-11-17 15:20:05,960 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 359 transitions. [2023-11-17 15:20:05,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 359 transitions. [2023-11-17 15:20:05,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:05,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 359 transitions. [2023-11-17 15:20:05,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 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 15:20:05,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 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 15:20:05,964 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 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 15:20:05,964 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 119 flow. Second operand 4 states and 359 transitions. [2023-11-17 15:20:05,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 53 transitions, 356 flow [2023-11-17 15:20:05,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:20:05,967 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 167 flow [2023-11-17 15:20:05,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2023-11-17 15:20:05,969 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-11-17 15:20:05,970 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 167 flow [2023-11-17 15:20:05,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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 15:20:05,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:05,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:05,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:20:05,970 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 15:20:05,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:05,971 INFO L85 PathProgramCache]: Analyzing trace with hash -982775985, now seen corresponding path program 3 times [2023-11-17 15:20:05,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:05,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111526481] [2023-11-17 15:20:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:05,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:06,096 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 15:20:06,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:06,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111526481] [2023-11-17 15:20:06,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111526481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:06,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:06,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:20:06,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178589071] [2023-11-17 15:20:06,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:06,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:20:06,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:06,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:20:06,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:20:06,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 162 [2023-11-17 15:20:06,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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 15:20:06,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:06,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 162 [2023-11-17 15:20:06,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:06,174 INFO L124 PetriNetUnfolderBase]: 211/395 cut-off events. [2023-11-17 15:20:06,174 INFO L125 PetriNetUnfolderBase]: For 719/719 co-relation queries the response was YES. [2023-11-17 15:20:06,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 395 events. 211/395 cut-off events. For 719/719 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1575 event pairs, 77 based on Foata normal form. 1/396 useless extension candidates. Maximal degree in co-relation 1482. Up to 185 conditions per place. [2023-11-17 15:20:06,177 INFO L140 encePairwiseOnDemand]: 157/162 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2023-11-17 15:20:06,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 408 flow [2023-11-17 15:20:06,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:20:06,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:20:06,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2023-11-17 15:20:06,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2023-11-17 15:20:06,179 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2023-11-17 15:20:06,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2023-11-17 15:20:06,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:06,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2023-11-17 15:20:06,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 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 15:20:06,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 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 15:20:06,183 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 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 15:20:06,183 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 167 flow. Second operand 4 states and 354 transitions. [2023-11-17 15:20:06,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 408 flow [2023-11-17 15:20:06,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 402 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 15:20:06,186 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-11-17 15:20:06,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-11-17 15:20:06,188 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-11-17 15:20:06,188 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-11-17 15:20:06,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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 15:20:06,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 15:20:06,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 15:20:06,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 15:20:06,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 15:20:06,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:20:06,193 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2023-11-17 15:20:06,196 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:20:06,196 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:20:06,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:20:06 BasicIcfg [2023-11-17 15:20:06,199 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:20:06,201 INFO L158 Benchmark]: Toolchain (without parser) took 4011.93ms. Allocated memory was 212.9MB in the beginning and 255.9MB in the end (delta: 43.0MB). Free memory was 158.5MB in the beginning and 178.9MB in the end (delta: -20.4MB). Peak memory consumption was 23.7MB. Max. memory is 8.0GB. [2023-11-17 15:20:06,204 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 166.7MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:20:06,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.24ms. Allocated memory is still 212.9MB. Free memory was 158.5MB in the beginning and 138.1MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 15:20:06,206 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.43ms. Allocated memory is still 212.9MB. Free memory was 138.1MB in the beginning and 136.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:20:06,206 INFO L158 Benchmark]: Boogie Preprocessor took 35.50ms. Allocated memory is still 212.9MB. Free memory was 136.0MB in the beginning and 134.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:20:06,207 INFO L158 Benchmark]: RCFGBuilder took 301.85ms. Allocated memory is still 212.9MB. Free memory was 134.4MB in the beginning and 119.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-11-17 15:20:06,207 INFO L158 Benchmark]: TraceAbstraction took 3308.56ms. Allocated memory was 212.9MB in the beginning and 255.9MB in the end (delta: 43.0MB). Free memory was 119.2MB in the beginning and 178.9MB in the end (delta: -59.7MB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:20:06,208 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 166.7MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 324.24ms. Allocated memory is still 212.9MB. Free memory was 158.5MB in the beginning and 138.1MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.43ms. Allocated memory is still 212.9MB. Free memory was 138.1MB in the beginning and 136.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.50ms. Allocated memory is still 212.9MB. Free memory was 136.0MB in the beginning and 134.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 301.85ms. Allocated memory is still 212.9MB. Free memory was 134.4MB in the beginning and 119.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 3308.56ms. Allocated memory was 212.9MB in the beginning and 255.9MB in the end (delta: 43.0MB). Free memory was 119.2MB in the beginning and 178.9MB in the end (delta: -59.7MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 87 PlacesBefore, 27 PlacesAfterwards, 78 TransitionsBefore, 18 TransitionsAfterwards, 1584 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 66 TotalNumberOfCompositions, 1986 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1392, independent: 1326, independent conditional: 0, independent unconditional: 1326, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1098, independent: 1061, independent conditional: 0, independent unconditional: 1061, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1098, independent: 1053, independent conditional: 0, independent unconditional: 1053, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 64, independent: 17, independent conditional: 0, independent unconditional: 17, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1392, independent: 265, independent conditional: 0, independent unconditional: 265, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 1098, unknown conditional: 0, unknown unconditional: 1098] , Statistics on independence cache: Total cache size (in pairs): 76, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, 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, 125 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 333 IncrementalHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 333 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=5, InterpolantAutomatonStates: 24, 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, 0.6s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 342 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 15:20:06,240 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...