/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/weaver/chl-simpl-str-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:56:22,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:56:22,207 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 15:56:22,242 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:56:22,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:56:22,243 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:56:22,244 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:56:22,244 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:56:22,248 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:56:22,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:56:22,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:56:22,252 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:56:22,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:56:22,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:56:22,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:56:22,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:56:22,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:56:22,255 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:56:22,255 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:56:22,255 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:56:22,255 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:56:22,256 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:56:22,256 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:56:22,256 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:56:22,257 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:56:22,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:56:22,257 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:56:22,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:56:22,257 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:56:22,258 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:56:22,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:56:22,259 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:56:22,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:56:22,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:56:22,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:56:22,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:56:22,524 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:56:22,524 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:56:22,525 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c [2023-11-17 15:56:23,741 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:56:23,930 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:56:23,930 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c [2023-11-17 15:56:23,937 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/135e67964/bb5cf5b1f21742b9bc5dc5b441883b3d/FLAGabd081768 [2023-11-17 15:56:23,949 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/135e67964/bb5cf5b1f21742b9bc5dc5b441883b3d [2023-11-17 15:56:23,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:56:23,952 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:56:23,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:56:23,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:56:23,957 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:56:23,958 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:56:23" (1/1) ... [2023-11-17 15:56:23,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cca7ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:23, skipping insertion in model container [2023-11-17 15:56:23,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:56:23" (1/1) ... [2023-11-17 15:56:23,979 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:56:24,123 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-simpl-str-subst.wvr.c[2614,2627] [2023-11-17 15:56:24,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:56:24,141 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:56:24,161 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-simpl-str-subst.wvr.c[2614,2627] [2023-11-17 15:56:24,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:56:24,175 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:56:24,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:24 WrapperNode [2023-11-17 15:56:24,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:56:24,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:56:24,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:56:24,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:56:24,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:24" (1/1) ... [2023-11-17 15:56:24,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:24" (1/1) ... [2023-11-17 15:56:24,214 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 175 [2023-11-17 15:56:24,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:56:24,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:56:24,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:56:24,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:56:24,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:24" (1/1) ... [2023-11-17 15:56:24,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:24" (1/1) ... [2023-11-17 15:56:24,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:24" (1/1) ... [2023-11-17 15:56:24,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:24" (1/1) ... [2023-11-17 15:56:24,237 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:24" (1/1) ... [2023-11-17 15:56:24,239 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:24" (1/1) ... [2023-11-17 15:56:24,241 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:24" (1/1) ... [2023-11-17 15:56:24,242 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:24" (1/1) ... [2023-11-17 15:56:24,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:56:24,245 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:56:24,245 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:56:24,245 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:56:24,246 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:24" (1/1) ... [2023-11-17 15:56:24,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:56:24,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:56:24,300 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 15:56:24,325 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 15:56:24,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:56:24,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:56:24,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:56:24,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:56:24,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:56:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 15:56:24,338 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 15:56:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:56:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:56:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:56:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:56:24,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:56:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:56:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:56:24,341 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 15:56:24,476 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:56:24,478 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:56:24,865 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:56:24,886 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:56:24,886 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:56:24,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:56:24 BoogieIcfgContainer [2023-11-17 15:56:24,889 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:56:24,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:56:24,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:56:24,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:56:24,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:56:23" (1/3) ... [2023-11-17 15:56:24,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b9fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:56:24, skipping insertion in model container [2023-11-17 15:56:24,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:24" (2/3) ... [2023-11-17 15:56:24,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b9fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:56:24, skipping insertion in model container [2023-11-17 15:56:24,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:56:24" (3/3) ... [2023-11-17 15:56:24,899 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2023-11-17 15:56:24,915 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:56:24,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:56:24,916 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:56:25,022 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 15:56:25,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 225 transitions, 471 flow [2023-11-17 15:56:25,131 INFO L124 PetriNetUnfolderBase]: 14/222 cut-off events. [2023-11-17 15:56:25,131 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:56:25,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 222 events. 14/222 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 440 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 145. Up to 2 conditions per place. [2023-11-17 15:56:25,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 225 transitions, 471 flow [2023-11-17 15:56:25,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 211 transitions, 440 flow [2023-11-17 15:56:25,149 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:56:25,162 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 211 transitions, 440 flow [2023-11-17 15:56:25,165 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 211 transitions, 440 flow [2023-11-17 15:56:25,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 211 transitions, 440 flow [2023-11-17 15:56:25,222 INFO L124 PetriNetUnfolderBase]: 14/211 cut-off events. [2023-11-17 15:56:25,223 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:56:25,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 211 events. 14/211 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 439 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 145. Up to 2 conditions per place. [2023-11-17 15:56:25,231 INFO L119 LiptonReduction]: Number of co-enabled transitions 13038 [2023-11-17 15:56:31,582 INFO L134 LiptonReduction]: Checked pairs total: 12019 [2023-11-17 15:56:31,582 INFO L136 LiptonReduction]: Total number of compositions: 256 [2023-11-17 15:56:31,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:56:31,602 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;@4f302264, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:56:31,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:56:31,608 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:56:31,608 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 15:56:31,609 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:56:31,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:56:31,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:56:31,610 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 15:56:31,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:56:31,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1403833294, now seen corresponding path program 1 times [2023-11-17 15:56:31,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:56:31,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818642358] [2023-11-17 15:56:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:56:31,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:56:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:33,489 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 15:56:33,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:56:33,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818642358] [2023-11-17 15:56:33,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818642358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:56:33,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:56:33,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:56:33,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656318108] [2023-11-17 15:56:33,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:56:33,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:56:33,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:56:33,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:56:33,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:56:33,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 481 [2023-11-17 15:56:33,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 175.2) internal successors, (876), 5 states have internal predecessors, (876), 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 15:56:33,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:56:33,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 481 [2023-11-17 15:56:33,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:56:33,905 INFO L124 PetriNetUnfolderBase]: 38/100 cut-off events. [2023-11-17 15:56:33,905 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-17 15:56:33,906 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 286 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 15:56:33,908 INFO L140 encePairwiseOnDemand]: 476/481 looper letters, 32 selfloop transitions, 6 changer transitions 7/45 dead transitions. [2023-11-17 15:56:33,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 228 flow [2023-11-17 15:56:33,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:56:33,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:56:33,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1078 transitions. [2023-11-17 15:56:33,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37352737352737353 [2023-11-17 15:56:33,932 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1078 transitions. [2023-11-17 15:56:33,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1078 transitions. [2023-11-17 15:56:33,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:56:33,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1078 transitions. [2023-11-17 15:56:33,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 179.66666666666666) internal successors, (1078), 6 states have internal predecessors, (1078), 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 15:56:33,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 481.0) internal successors, (3367), 7 states have internal predecessors, (3367), 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 15:56:33,956 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 481.0) internal successors, (3367), 7 states have internal predecessors, (3367), 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 15:56:33,958 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 1078 transitions. [2023-11-17 15:56:33,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 228 flow [2023-11-17 15:56:33,962 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 15:56:33,963 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 71 flow [2023-11-17 15:56:33,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, 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 15:56:33,970 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-11-17 15:56:33,970 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 71 flow [2023-11-17 15:56:33,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.2) internal successors, (876), 5 states have internal predecessors, (876), 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 15:56:33,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:56:33,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:56:33,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:56:33,972 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 15:56:33,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:56:33,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1204398306, now seen corresponding path program 2 times [2023-11-17 15:56:33,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:56:33,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314564508] [2023-11-17 15:56:33,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:56:33,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:56:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:34,970 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 15:56:34,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:56:34,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314564508] [2023-11-17 15:56:34,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314564508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:56:34,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:56:34,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:56:34,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159227535] [2023-11-17 15:56:34,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:56:34,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:56:34,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:56:34,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:56:34,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:56:34,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 481 [2023-11-17 15:56:34,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 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 15:56:34,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:56:34,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 481 [2023-11-17 15:56:34,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:56:35,317 INFO L124 PetriNetUnfolderBase]: 38/116 cut-off events. [2023-11-17 15:56:35,317 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-17 15:56:35,320 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 404 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 15:56:35,320 INFO L140 encePairwiseOnDemand]: 476/481 looper letters, 30 selfloop transitions, 7 changer transitions 9/46 dead transitions. [2023-11-17 15:56:35,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 46 transitions, 235 flow [2023-11-17 15:56:35,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:56:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:56:35,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1208 transitions. [2023-11-17 15:56:35,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3587763587763588 [2023-11-17 15:56:35,325 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1208 transitions. [2023-11-17 15:56:35,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1208 transitions. [2023-11-17 15:56:35,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:56:35,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1208 transitions. [2023-11-17 15:56:35,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 172.57142857142858) internal successors, (1208), 7 states have internal predecessors, (1208), 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 15:56:35,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 481.0) internal successors, (3848), 8 states have internal predecessors, (3848), 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 15:56:35,335 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 481.0) internal successors, (3848), 8 states have internal predecessors, (3848), 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 15:56:35,336 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 71 flow. Second operand 7 states and 1208 transitions. [2023-11-17 15:56:35,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 46 transitions, 235 flow [2023-11-17 15:56:35,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 46 transitions, 231 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 15:56:35,339 INFO L231 Difference]: Finished difference. Result has 35 places, 21 transitions, 100 flow [2023-11-17 15:56:35,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, 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=7, PETRI_FLOW=100, PETRI_PLACES=35, PETRI_TRANSITIONS=21} [2023-11-17 15:56:35,340 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2023-11-17 15:56:35,341 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 21 transitions, 100 flow [2023-11-17 15:56:35,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 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 15:56:35,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:56:35,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:56:35,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:56:35,342 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 15:56:35,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:56:35,346 INFO L85 PathProgramCache]: Analyzing trace with hash -160661858, now seen corresponding path program 3 times [2023-11-17 15:56:35,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:56:35,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792392355] [2023-11-17 15:56:35,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:56:35,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:56:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:36,068 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 15:56:36,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:56:36,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792392355] [2023-11-17 15:56:36,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792392355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:56:36,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:56:36,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:56:36,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966321046] [2023-11-17 15:56:36,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:56:36,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:56:36,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:56:36,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:56:36,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:56:36,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 481 [2023-11-17 15:56:36,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 175.2) internal successors, (876), 5 states have internal predecessors, (876), 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 15:56:36,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:56:36,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 481 [2023-11-17 15:56:36,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:56:36,290 INFO L124 PetriNetUnfolderBase]: 33/103 cut-off events. [2023-11-17 15:56:36,290 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2023-11-17 15:56:36,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 103 events. 33/103 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 337 event pairs, 2 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 334. Up to 51 conditions per place. [2023-11-17 15:56:36,291 INFO L140 encePairwiseOnDemand]: 476/481 looper letters, 27 selfloop transitions, 6 changer transitions 11/44 dead transitions. [2023-11-17 15:56:36,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 44 transitions, 257 flow [2023-11-17 15:56:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:56:36,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:56:36,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1076 transitions. [2023-11-17 15:56:36,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3728343728343728 [2023-11-17 15:56:36,295 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1076 transitions. [2023-11-17 15:56:36,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1076 transitions. [2023-11-17 15:56:36,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:56:36,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1076 transitions. [2023-11-17 15:56:36,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 179.33333333333334) internal successors, (1076), 6 states have internal predecessors, (1076), 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 15:56:36,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 481.0) internal successors, (3367), 7 states have internal predecessors, (3367), 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 15:56:36,305 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 481.0) internal successors, (3367), 7 states have internal predecessors, (3367), 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 15:56:36,305 INFO L175 Difference]: Start difference. First operand has 35 places, 21 transitions, 100 flow. Second operand 6 states and 1076 transitions. [2023-11-17 15:56:36,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 44 transitions, 257 flow [2023-11-17 15:56:36,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 242 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-17 15:56:36,307 INFO L231 Difference]: Finished difference. Result has 38 places, 20 transitions, 99 flow [2023-11-17 15:56:36,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=99, PETRI_PLACES=38, PETRI_TRANSITIONS=20} [2023-11-17 15:56:36,308 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-11-17 15:56:36,309 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 20 transitions, 99 flow [2023-11-17 15:56:36,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.2) internal successors, (876), 5 states have internal predecessors, (876), 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 15:56:36,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:56:36,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:56:36,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:56:36,310 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 15:56:36,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:56:36,310 INFO L85 PathProgramCache]: Analyzing trace with hash -459695808, now seen corresponding path program 4 times [2023-11-17 15:56:36,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:56:36,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895976836] [2023-11-17 15:56:36,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:56:36,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:56:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:37,019 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 15:56:37,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:56:37,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895976836] [2023-11-17 15:56:37,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895976836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:56:37,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:56:37,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:56:37,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588700059] [2023-11-17 15:56:37,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:56:37,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:56:37,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:56:37,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:56:37,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:56:37,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 481 [2023-11-17 15:56:37,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 20 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 175.2) internal successors, (876), 5 states have internal predecessors, (876), 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 15:56:37,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:56:37,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 481 [2023-11-17 15:56:37,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:56:37,305 INFO L124 PetriNetUnfolderBase]: 17/59 cut-off events. [2023-11-17 15:56:37,305 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-11-17 15:56:37,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 59 events. 17/59 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 132 event pairs, 0 based on Foata normal form. 1/60 useless extension candidates. Maximal degree in co-relation 205. Up to 20 conditions per place. [2023-11-17 15:56:37,306 INFO L140 encePairwiseOnDemand]: 476/481 looper letters, 18 selfloop transitions, 5 changer transitions 13/36 dead transitions. [2023-11-17 15:56:37,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 218 flow [2023-11-17 15:56:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:56:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:56:37,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1068 transitions. [2023-11-17 15:56:37,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3700623700623701 [2023-11-17 15:56:37,310 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1068 transitions. [2023-11-17 15:56:37,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1068 transitions. [2023-11-17 15:56:37,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:56:37,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1068 transitions. [2023-11-17 15:56:37,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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 15:56:37,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 481.0) internal successors, (3367), 7 states have internal predecessors, (3367), 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 15:56:37,320 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 481.0) internal successors, (3367), 7 states have internal predecessors, (3367), 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 15:56:37,320 INFO L175 Difference]: Start difference. First operand has 38 places, 20 transitions, 99 flow. Second operand 6 states and 1068 transitions. [2023-11-17 15:56:37,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 218 flow [2023-11-17 15:56:37,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 197 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-17 15:56:37,325 INFO L231 Difference]: Finished difference. Result has 36 places, 18 transitions, 78 flow [2023-11-17 15:56:37,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=18} [2023-11-17 15:56:37,326 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-11-17 15:56:37,326 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 18 transitions, 78 flow [2023-11-17 15:56:37,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.2) internal successors, (876), 5 states have internal predecessors, (876), 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 15:56:37,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:56:37,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:56:37,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:56:37,327 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 15:56:37,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:56:37,328 INFO L85 PathProgramCache]: Analyzing trace with hash 964540976, now seen corresponding path program 5 times [2023-11-17 15:56:37,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:56:37,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939771697] [2023-11-17 15:56:37,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:56:37,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:56:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:38,277 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 15:56:38,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:56:38,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939771697] [2023-11-17 15:56:38,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939771697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:56:38,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:56:38,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:56:38,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813224564] [2023-11-17 15:56:38,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:56:38,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:56:38,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:56:38,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:56:38,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:56:38,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 481 [2023-11-17 15:56:38,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 18 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 175.2) internal successors, (876), 5 states have internal predecessors, (876), 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 15:56:38,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:56:38,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 481 [2023-11-17 15:56:38,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:56:38,776 INFO L124 PetriNetUnfolderBase]: 8/40 cut-off events. [2023-11-17 15:56:38,776 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-17 15:56:38,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 40 events. 8/40 cut-off events. For 30/30 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 133. Up to 19 conditions per place. [2023-11-17 15:56:38,777 INFO L140 encePairwiseOnDemand]: 476/481 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-11-17 15:56:38,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 30 transitions, 174 flow [2023-11-17 15:56:38,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:56:38,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:56:38,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1063 transitions. [2023-11-17 15:56:38,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3683298683298683 [2023-11-17 15:56:38,780 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1063 transitions. [2023-11-17 15:56:38,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1063 transitions. [2023-11-17 15:56:38,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:56:38,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1063 transitions. [2023-11-17 15:56:38,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 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 15:56:38,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 481.0) internal successors, (3367), 7 states have internal predecessors, (3367), 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 15:56:38,787 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 481.0) internal successors, (3367), 7 states have internal predecessors, (3367), 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 15:56:38,788 INFO L175 Difference]: Start difference. First operand has 36 places, 18 transitions, 78 flow. Second operand 6 states and 1063 transitions. [2023-11-17 15:56:38,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 30 transitions, 174 flow [2023-11-17 15:56:38,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 144 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-11-17 15:56:38,789 INFO L231 Difference]: Finished difference. Result has 33 places, 16 transitions, 56 flow [2023-11-17 15:56:38,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=56, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2023-11-17 15:56:38,790 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-11-17 15:56:38,790 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 16 transitions, 56 flow [2023-11-17 15:56:38,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.2) internal successors, (876), 5 states have internal predecessors, (876), 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 15:56:38,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:56:38,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:56:38,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:56:38,791 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 15:56:38,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:56:38,791 INFO L85 PathProgramCache]: Analyzing trace with hash -524864020, now seen corresponding path program 6 times [2023-11-17 15:56:38,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:56:38,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626884335] [2023-11-17 15:56:38,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:56:38,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:56:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:39,569 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 15:56:39,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:56:39,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626884335] [2023-11-17 15:56:39,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626884335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:56:39,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:56:39,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:56:39,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064141023] [2023-11-17 15:56:39,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:56:39,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:56:39,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:56:39,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:56:39,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:56:39,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 481 [2023-11-17 15:56:39,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 16 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 175.2) internal successors, (876), 5 states have internal predecessors, (876), 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 15:56:39,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:56:39,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 481 [2023-11-17 15:56:39,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:56:39,867 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-17 15:56:39,867 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 15:56:39,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 62. Up to 8 conditions per place. [2023-11-17 15:56:39,868 INFO L140 encePairwiseOnDemand]: 476/481 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-11-17 15:56:39,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 94 flow [2023-11-17 15:56:39,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:56:39,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:56:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1051 transitions. [2023-11-17 15:56:39,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36417186417186415 [2023-11-17 15:56:39,872 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1051 transitions. [2023-11-17 15:56:39,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1051 transitions. [2023-11-17 15:56:39,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:56:39,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1051 transitions. [2023-11-17 15:56:39,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.16666666666666) internal successors, (1051), 6 states have internal predecessors, (1051), 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 15:56:39,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 481.0) internal successors, (3367), 7 states have internal predecessors, (3367), 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 15:56:39,880 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 481.0) internal successors, (3367), 7 states have internal predecessors, (3367), 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 15:56:39,880 INFO L175 Difference]: Start difference. First operand has 33 places, 16 transitions, 56 flow. Second operand 6 states and 1051 transitions. [2023-11-17 15:56:39,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 94 flow [2023-11-17 15:56:39,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 82 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-17 15:56:39,881 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-11-17 15:56:39,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, 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=29, PETRI_TRANSITIONS=0} [2023-11-17 15:56:39,883 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-11-17 15:56:39,884 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-11-17 15:56:39,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.2) internal successors, (876), 5 states have internal predecessors, (876), 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 15:56:39,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 15:56:39,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 15:56:39,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 15:56:39,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 15:56:39,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:56:39,888 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-11-17 15:56:39,891 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:56:39,891 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:56:39,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:56:39 BasicIcfg [2023-11-17 15:56:39,896 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:56:39,899 INFO L158 Benchmark]: Toolchain (without parser) took 15944.39ms. Allocated memory was 286.3MB in the beginning and 496.0MB in the end (delta: 209.7MB). Free memory was 244.4MB in the beginning and 279.2MB in the end (delta: -34.9MB). Peak memory consumption was 175.9MB. Max. memory is 8.0GB. [2023-11-17 15:56:39,903 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 194.0MB. Free memory is still 139.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:56:39,903 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.04ms. Allocated memory is still 286.3MB. Free memory was 243.9MB in the beginning and 232.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-11-17 15:56:39,903 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.53ms. Allocated memory is still 286.3MB. Free memory was 232.3MB in the beginning and 230.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:56:39,904 INFO L158 Benchmark]: Boogie Preprocessor took 29.74ms. Allocated memory is still 286.3MB. Free memory was 230.2MB in the beginning and 228.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:56:39,904 INFO L158 Benchmark]: RCFGBuilder took 643.94ms. Allocated memory is still 286.3MB. Free memory was 228.6MB in the beginning and 209.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-11-17 15:56:39,906 INFO L158 Benchmark]: TraceAbstraction took 15003.56ms. Allocated memory was 286.3MB in the beginning and 496.0MB in the end (delta: 209.7MB). Free memory was 209.2MB in the beginning and 279.2MB in the end (delta: -70.0MB). Peak memory consumption was 140.3MB. Max. memory is 8.0GB. [2023-11-17 15:56:39,908 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 194.0MB. Free memory is still 139.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 223.04ms. Allocated memory is still 286.3MB. Free memory was 243.9MB in the beginning and 232.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.53ms. Allocated memory is still 286.3MB. Free memory was 232.3MB in the beginning and 230.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.74ms. Allocated memory is still 286.3MB. Free memory was 230.2MB in the beginning and 228.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 643.94ms. Allocated memory is still 286.3MB. Free memory was 228.6MB in the beginning and 209.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 15003.56ms. Allocated memory was 286.3MB in the beginning and 496.0MB in the end (delta: 209.7MB). Free memory was 209.2MB in the beginning and 279.2MB in the end (delta: -70.0MB). Peak memory consumption was 140.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.4s, 207 PlacesBefore, 26 PlacesAfterwards, 211 TransitionsBefore, 16 TransitionsAfterwards, 13038 CoEnabledTransitionPairs, 7 FixpointIterations, 62 TrivialSequentialCompositions, 118 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 56 ConcurrentYvCompositions, 14 ChoiceCompositions, 256 TotalNumberOfCompositions, 12019 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12019, independent: 12019, independent conditional: 0, independent unconditional: 12019, 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: 10432, independent: 10432, independent conditional: 0, independent unconditional: 10432, 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: 10432, independent: 10432, independent conditional: 0, independent unconditional: 10432, 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: 12019, independent: 1587, independent conditional: 0, independent unconditional: 1587, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 10432, unknown conditional: 0, unknown unconditional: 10432] , 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: 81]: 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, 329 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: 14.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 201 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 201 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 430 IncrementalHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 430 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=2, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2798 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 15:56:39,933 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...