/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 --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-match-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:54:19,604 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:54:19,673 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 11:54:19,701 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:54:19,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:54:19,702 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:54:19,702 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:54:19,702 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:54:19,702 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:54:19,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:54:19,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:54:19,703 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:54:19,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:54:19,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:54:19,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:54:19,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:54:19,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:54:19,705 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:54:19,705 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:54:19,705 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:54:19,705 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:54:19,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:54:19,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:54:19,709 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:54:19,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:54:19,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:54:19,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:54:19,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:54:19,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:54:19,710 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:54:19,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:54:19,710 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:54:19,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:54:19,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:54:19,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:54:19,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:54:19,922 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:54:19,922 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:54:19,923 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-trans.wvr.c [2023-11-17 11:54:20,886 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:54:21,023 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:54:21,024 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-trans.wvr.c [2023-11-17 11:54:21,033 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fc1be2ba/4f1fdc1e25ff45618bbc9c693abd77ac/FLAG65fedde8f [2023-11-17 11:54:21,044 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fc1be2ba/4f1fdc1e25ff45618bbc9c693abd77ac [2023-11-17 11:54:21,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:54:21,047 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:54:21,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:54:21,048 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:54:21,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:54:21,055 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:54:21" (1/1) ... [2023-11-17 11:54:21,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@607cbeb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:21, skipping insertion in model container [2023-11-17 11:54:21,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:54:21" (1/1) ... [2023-11-17 11:54:21,079 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:54:21,226 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-trans.wvr.c[2993,3006] [2023-11-17 11:54:21,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:54:21,241 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:54:21,259 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-trans.wvr.c[2993,3006] [2023-11-17 11:54:21,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:54:21,270 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:54:21,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:21 WrapperNode [2023-11-17 11:54:21,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:54:21,272 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:54:21,272 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:54:21,272 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:54:21,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:21" (1/1) ... [2023-11-17 11:54:21,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:21" (1/1) ... [2023-11-17 11:54:21,303 INFO L138 Inliner]: procedures = 23, calls = 33, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 213 [2023-11-17 11:54:21,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:54:21,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:54:21,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:54:21,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:54:21,310 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:21" (1/1) ... [2023-11-17 11:54:21,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:21" (1/1) ... [2023-11-17 11:54:21,314 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:21" (1/1) ... [2023-11-17 11:54:21,314 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:21" (1/1) ... [2023-11-17 11:54:21,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:21" (1/1) ... [2023-11-17 11:54:21,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:21" (1/1) ... [2023-11-17 11:54:21,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:21" (1/1) ... [2023-11-17 11:54:21,329 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:21" (1/1) ... [2023-11-17 11:54:21,331 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:54:21,332 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:54:21,332 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:54:21,332 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:54:21,332 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:21" (1/1) ... [2023-11-17 11:54:21,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:54:21,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:54:21,374 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 11:54:21,382 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 11:54:21,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:54:21,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 11:54:21,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 11:54:21,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 11:54:21,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 11:54:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 11:54:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 11:54:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:54:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:54:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:54:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:54:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:54:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:54:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:54:21,397 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 11:54:21,473 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:54:21,474 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:54:21,724 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:54:22,022 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:54:22,022 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:54:22,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:54:22 BoogieIcfgContainer [2023-11-17 11:54:22,024 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:54:22,027 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:54:22,027 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:54:22,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:54:22,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:54:21" (1/3) ... [2023-11-17 11:54:22,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3c746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:54:22, skipping insertion in model container [2023-11-17 11:54:22,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:21" (2/3) ... [2023-11-17 11:54:22,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3c746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:54:22, skipping insertion in model container [2023-11-17 11:54:22,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:54:22" (3/3) ... [2023-11-17 11:54:22,031 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2023-11-17 11:54:22,044 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:54:22,045 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:54:22,045 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:54:22,086 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 11:54:22,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 21 transitions, 63 flow [2023-11-17 11:54:22,139 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-11-17 11:54:22,139 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:54:22,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 18 events. 0/18 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-17 11:54:22,141 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 21 transitions, 63 flow [2023-11-17 11:54:22,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 17 transitions, 52 flow [2023-11-17 11:54:22,147 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:54:22,161 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 17 transitions, 52 flow [2023-11-17 11:54:22,164 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 17 transitions, 52 flow [2023-11-17 11:54:22,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 17 transitions, 52 flow [2023-11-17 11:54:22,175 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-11-17 11:54:22,175 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:54:22,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 17 events. 0/17 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-17 11:54:22,176 INFO L119 LiptonReduction]: Number of co-enabled transitions 36 [2023-11-17 11:54:22,211 INFO L134 LiptonReduction]: Checked pairs total: 60 [2023-11-17 11:54:22,211 INFO L136 LiptonReduction]: Total number of compositions: 1 [2023-11-17 11:54:22,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:54:22,233 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;@208aadbf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:54:22,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:54:22,241 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:54:22,241 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 11:54:22,241 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:54:22,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:22,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:22,242 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 11:54:22,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:22,245 INFO L85 PathProgramCache]: Analyzing trace with hash -2021354524, now seen corresponding path program 1 times [2023-11-17 11:54:22,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:22,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578264122] [2023-11-17 11:54:22,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:22,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:22,935 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 11:54:22,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:22,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578264122] [2023-11-17 11:54:22,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578264122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:22,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:22,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:54:22,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400230988] [2023-11-17 11:54:22,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:22,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:54:22,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:22,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:54:22,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:54:22,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2023-11-17 11:54:22,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 11:54:22,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:22,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2023-11-17 11:54:22,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:23,132 INFO L124 PetriNetUnfolderBase]: 38/100 cut-off events. [2023-11-17 11:54:23,133 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-17 11:54:23,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 279 event pairs, 2 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 169. Up to 38 conditions per place. [2023-11-17 11:54:23,137 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 32 selfloop transitions, 6 changer transitions 7/45 dead transitions. [2023-11-17 11:54:23,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 228 flow [2023-11-17 11:54:23,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:54:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:54:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2023-11-17 11:54:23,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2023-11-17 11:54:23,147 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 70 transitions. [2023-11-17 11:54:23,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 70 transitions. [2023-11-17 11:54:23,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:23,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 70 transitions. [2023-11-17 11:54:23,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 11:54:23,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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 11:54:23,156 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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 11:54:23,157 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 70 transitions. [2023-11-17 11:54:23,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 228 flow [2023-11-17 11:54:23,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 45 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 11:54:23,165 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 71 flow [2023-11-17 11:54:23,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-11-17 11:54:23,169 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-11-17 11:54:23,169 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 71 flow [2023-11-17 11:54:23,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 11:54:23,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:23,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:23,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:54:23,170 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 11:54:23,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:23,177 INFO L85 PathProgramCache]: Analyzing trace with hash -418213472, now seen corresponding path program 2 times [2023-11-17 11:54:23,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:23,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134355547] [2023-11-17 11:54:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:23,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:23,474 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 11:54:23,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:23,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134355547] [2023-11-17 11:54:23,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134355547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:23,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:23,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:54:23,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673202789] [2023-11-17 11:54:23,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:23,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:54:23,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:23,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:54:23,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:54:23,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2023-11-17 11:54:23,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 11:54:23,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:23,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2023-11-17 11:54:23,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:23,632 INFO L124 PetriNetUnfolderBase]: 38/116 cut-off events. [2023-11-17 11:54:23,632 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-17 11:54:23,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 116 events. 38/116 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 407 event pairs, 6 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 309. Up to 58 conditions per place. [2023-11-17 11:54:23,635 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 30 selfloop transitions, 7 changer transitions 9/46 dead transitions. [2023-11-17 11:54:23,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 235 flow [2023-11-17 11:54:23,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:54:23,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:54:23,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2023-11-17 11:54:23,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2023-11-17 11:54:23,639 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 70 transitions. [2023-11-17 11:54:23,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 70 transitions. [2023-11-17 11:54:23,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:23,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 70 transitions. [2023-11-17 11:54:23,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 11:54:23,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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 11:54:23,643 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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 11:54:23,643 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 71 flow. Second operand 6 states and 70 transitions. [2023-11-17 11:54:23,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 235 flow [2023-11-17 11:54:23,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 231 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 11:54:23,651 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 100 flow [2023-11-17 11:54:23,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2023-11-17 11:54:23,652 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-11-17 11:54:23,652 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 100 flow [2023-11-17 11:54:23,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 11:54:23,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:23,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:23,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:54:23,653 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 11:54:23,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:23,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1316811802, now seen corresponding path program 3 times [2023-11-17 11:54:23,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:23,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442219331] [2023-11-17 11:54:23,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:23,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:23,933 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 11:54:23,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:23,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442219331] [2023-11-17 11:54:23,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442219331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:23,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:23,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:54:23,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430314572] [2023-11-17 11:54:23,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:23,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:54:23,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:23,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:54:23,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:54:23,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2023-11-17 11:54:23,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 11:54:23,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:23,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2023-11-17 11:54:23,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:24,042 INFO L124 PetriNetUnfolderBase]: 34/106 cut-off events. [2023-11-17 11:54:24,042 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-11-17 11:54:24,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 106 events. 34/106 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 359 event pairs, 7 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 344. Up to 53 conditions per place. [2023-11-17 11:54:24,045 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 23 selfloop transitions, 8 changer transitions 10/41 dead transitions. [2023-11-17 11:54:24,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 250 flow [2023-11-17 11:54:24,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:54:24,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:54:24,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2023-11-17 11:54:24,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2023-11-17 11:54:24,047 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 58 transitions. [2023-11-17 11:54:24,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 58 transitions. [2023-11-17 11:54:24,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:24,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 58 transitions. [2023-11-17 11:54:24,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 11:54:24,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 11:54:24,048 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 11:54:24,048 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 100 flow. Second operand 5 states and 58 transitions. [2023-11-17 11:54:24,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 250 flow [2023-11-17 11:54:24,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 236 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-17 11:54:24,051 INFO L231 Difference]: Finished difference. Result has 36 places, 21 transitions, 113 flow [2023-11-17 11:54:24,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=113, PETRI_PLACES=36, PETRI_TRANSITIONS=21} [2023-11-17 11:54:24,052 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-11-17 11:54:24,053 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 21 transitions, 113 flow [2023-11-17 11:54:24,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 11:54:24,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:24,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:24,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:54:24,053 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 11:54:24,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:24,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1310709692, now seen corresponding path program 4 times [2023-11-17 11:54:24,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:24,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237992634] [2023-11-17 11:54:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:24,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:24,324 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 11:54:24,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:24,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237992634] [2023-11-17 11:54:24,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237992634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:24,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:24,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:54:24,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848915522] [2023-11-17 11:54:24,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:24,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:54:24,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:24,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:54:24,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:54:24,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2023-11-17 11:54:24,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 21 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 11:54:24,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:24,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2023-11-17 11:54:24,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:24,435 INFO L124 PetriNetUnfolderBase]: 18/62 cut-off events. [2023-11-17 11:54:24,435 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-17 11:54:24,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 62 events. 18/62 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 146 event pairs, 0 based on Foata normal form. 1/63 useless extension candidates. Maximal degree in co-relation 169. Up to 22 conditions per place. [2023-11-17 11:54:24,436 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 18 selfloop transitions, 6 changer transitions 13/37 dead transitions. [2023-11-17 11:54:24,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 37 transitions, 233 flow [2023-11-17 11:54:24,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:54:24,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:54:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2023-11-17 11:54:24,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-11-17 11:54:24,438 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 60 transitions. [2023-11-17 11:54:24,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 60 transitions. [2023-11-17 11:54:24,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:24,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 60 transitions. [2023-11-17 11:54:24,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 11:54:24,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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 11:54:24,439 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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 11:54:24,439 INFO L175 Difference]: Start difference. First operand has 36 places, 21 transitions, 113 flow. Second operand 6 states and 60 transitions. [2023-11-17 11:54:24,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 37 transitions, 233 flow [2023-11-17 11:54:24,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 212 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-17 11:54:24,441 INFO L231 Difference]: Finished difference. Result has 36 places, 19 transitions, 92 flow [2023-11-17 11:54:24,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=36, PETRI_TRANSITIONS=19} [2023-11-17 11:54:24,442 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-11-17 11:54:24,442 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 19 transitions, 92 flow [2023-11-17 11:54:24,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 11:54:24,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:24,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:24,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:54:24,442 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 11:54:24,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:24,443 INFO L85 PathProgramCache]: Analyzing trace with hash 534731420, now seen corresponding path program 5 times [2023-11-17 11:54:24,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:24,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657148040] [2023-11-17 11:54:24,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:24,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:24,639 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 11:54:24,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:24,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657148040] [2023-11-17 11:54:24,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657148040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:24,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:24,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:54:24,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543857546] [2023-11-17 11:54:24,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:24,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:54:24,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:24,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:54:24,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:54:24,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2023-11-17 11:54:24,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 19 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 11:54:24,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:24,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2023-11-17 11:54:24,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:24,731 INFO L124 PetriNetUnfolderBase]: 8/40 cut-off events. [2023-11-17 11:54:24,732 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-17 11:54:24,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 40 events. 8/40 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 131. Up to 19 conditions per place. [2023-11-17 11:54:24,735 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-11-17 11:54:24,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 178 flow [2023-11-17 11:54:24,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:54:24,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:54:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2023-11-17 11:54:24,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-11-17 11:54:24,737 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 55 transitions. [2023-11-17 11:54:24,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 55 transitions. [2023-11-17 11:54:24,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:24,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 55 transitions. [2023-11-17 11:54:24,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 11:54:24,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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 11:54:24,739 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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 11:54:24,739 INFO L175 Difference]: Start difference. First operand has 36 places, 19 transitions, 92 flow. Second operand 6 states and 55 transitions. [2023-11-17 11:54:24,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 178 flow [2023-11-17 11:54:24,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 153 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-17 11:54:24,741 INFO L231 Difference]: Finished difference. Result has 34 places, 16 transitions, 60 flow [2023-11-17 11:54:24,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=60, PETRI_PLACES=34, PETRI_TRANSITIONS=16} [2023-11-17 11:54:24,743 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-11-17 11:54:24,744 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 16 transitions, 60 flow [2023-11-17 11:54:24,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 11:54:24,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:24,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:24,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:54:24,744 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 11:54:24,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:24,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1279433918, now seen corresponding path program 6 times [2023-11-17 11:54:24,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:24,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535066713] [2023-11-17 11:54:24,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:24,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:24,947 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 11:54:24,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:24,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535066713] [2023-11-17 11:54:24,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535066713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:24,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:24,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:54:24,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115105381] [2023-11-17 11:54:24,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:24,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:54:24,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:24,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:54:24,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:54:24,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2023-11-17 11:54:24,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 16 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 11:54:24,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:24,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2023-11-17 11:54:24,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:25,018 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-17 11:54:25,018 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-17 11:54:25,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 21 events. 3/21 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 65. Up to 8 conditions per place. [2023-11-17 11:54:25,019 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-11-17 11:54:25,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 18 transitions, 98 flow [2023-11-17 11:54:25,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:54:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:54:25,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2023-11-17 11:54:25,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32575757575757575 [2023-11-17 11:54:25,020 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 43 transitions. [2023-11-17 11:54:25,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 43 transitions. [2023-11-17 11:54:25,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:25,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 43 transitions. [2023-11-17 11:54:25,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 11:54:25,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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 11:54:25,021 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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 11:54:25,021 INFO L175 Difference]: Start difference. First operand has 34 places, 16 transitions, 60 flow. Second operand 6 states and 43 transitions. [2023-11-17 11:54:25,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 18 transitions, 98 flow [2023-11-17 11:54:25,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 79 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-17 11:54:25,022 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-11-17 11:54:25,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2023-11-17 11:54:25,024 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-11-17 11:54:25,024 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-11-17 11:54:25,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 11:54:25,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 11:54:25,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 11:54:25,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 11:54:25,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 11:54:25,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:54:25,027 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-11-17 11:54:25,029 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:54:25,029 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:54:25,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:54:25 BasicIcfg [2023-11-17 11:54:25,031 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:54:25,032 INFO L158 Benchmark]: Toolchain (without parser) took 3985.04ms. Allocated memory was 174.1MB in the beginning and 297.8MB in the end (delta: 123.7MB). Free memory was 121.8MB in the beginning and 113.3MB in the end (delta: 8.5MB). Peak memory consumption was 132.6MB. Max. memory is 8.0GB. [2023-11-17 11:54:25,034 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 174.1MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:54:25,035 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.57ms. Allocated memory is still 174.1MB. Free memory was 121.6MB in the beginning and 110.0MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 11:54:25,035 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.67ms. Allocated memory is still 174.1MB. Free memory was 109.8MB in the beginning and 107.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:54:25,035 INFO L158 Benchmark]: Boogie Preprocessor took 27.29ms. Allocated memory is still 174.1MB. Free memory was 107.3MB in the beginning and 105.7MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:54:25,036 INFO L158 Benchmark]: RCFGBuilder took 692.53ms. Allocated memory was 174.1MB in the beginning and 237.0MB in the end (delta: 62.9MB). Free memory was 105.7MB in the beginning and 143.6MB in the end (delta: -37.9MB). Peak memory consumption was 37.4MB. Max. memory is 8.0GB. [2023-11-17 11:54:25,036 INFO L158 Benchmark]: TraceAbstraction took 3004.43ms. Allocated memory was 237.0MB in the beginning and 297.8MB in the end (delta: 60.8MB). Free memory was 143.0MB in the beginning and 113.3MB in the end (delta: 29.7MB). Peak memory consumption was 90.0MB. Max. memory is 8.0GB. [2023-11-17 11:54:25,045 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 174.1MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 223.57ms. Allocated memory is still 174.1MB. Free memory was 121.6MB in the beginning and 110.0MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.67ms. Allocated memory is still 174.1MB. Free memory was 109.8MB in the beginning and 107.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.29ms. Allocated memory is still 174.1MB. Free memory was 107.3MB in the beginning and 105.7MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 692.53ms. Allocated memory was 174.1MB in the beginning and 237.0MB in the end (delta: 62.9MB). Free memory was 105.7MB in the beginning and 143.6MB in the end (delta: -37.9MB). Peak memory consumption was 37.4MB. Max. memory is 8.0GB. * TraceAbstraction took 3004.43ms. Allocated memory was 237.0MB in the beginning and 297.8MB in the end (delta: 60.8MB). Free memory was 143.0MB in the beginning and 113.3MB in the end (delta: 29.7MB). Peak memory consumption was 90.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 27 PlacesBefore, 26 PlacesAfterwards, 17 TransitionsBefore, 16 TransitionsAfterwards, 36 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 60 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 60, independent: 60, independent conditional: 0, independent unconditional: 60, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 30, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 30, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 60, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 30, unknown conditional: 0, unknown unconditional: 30] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 88]: 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, 31 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: 2.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 187 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 187 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 407 IncrementalHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 0 mSDtfsCounter, 407 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=3, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 886 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 11:54:25,061 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...