/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/pthread/queue_ok_longest.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:12:02,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:12:02,330 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 11:12:02,366 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:12:02,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:12:02,368 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:12:02,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:12:02,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:12:02,369 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:12:02,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:12:02,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:12:02,374 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:12:02,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:12:02,375 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:12:02,375 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:12:02,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:12:02,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:12:02,376 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:12:02,376 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:12:02,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:12:02,377 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:12:02,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:12:02,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:12:02,378 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:12:02,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:12:02,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:12:02,380 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:12:02,380 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:12:02,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:12:02,380 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:12:02,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:12:02,382 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:12:02,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:12:02,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:12:02,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:12:02,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:12:02,680 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:12:02,680 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:12:02,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_ok_longest.i [2023-11-17 11:12:03,963 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:12:04,259 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:12:04,260 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i [2023-11-17 11:12:04,277 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5657f45f/f4284a8304a440518c5c9dec8269d309/FLAGa0c0f5cb3 [2023-11-17 11:12:04,296 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5657f45f/f4284a8304a440518c5c9dec8269d309 [2023-11-17 11:12:04,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:12:04,300 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:12:04,304 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:12:04,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:12:04,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:12:04,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:12:04" (1/1) ... [2023-11-17 11:12:04,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27315803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:12:04, skipping insertion in model container [2023-11-17 11:12:04,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:12:04" (1/1) ... [2023-11-17 11:12:04,363 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:12:04,789 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43280,43293] [2023-11-17 11:12:04,796 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43553,43566] [2023-11-17 11:12:04,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:12:04,810 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:12:04,872 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43280,43293] [2023-11-17 11:12:04,875 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43553,43566] [2023-11-17 11:12:04,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:12:04,958 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:12:04,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:12:04 WrapperNode [2023-11-17 11:12:04,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:12:04,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:12:04,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:12:04,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:12:04,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:12:04" (1/1) ... [2023-11-17 11:12:04,997 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:12:04" (1/1) ... [2023-11-17 11:12:05,066 INFO L138 Inliner]: procedures = 275, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 208 [2023-11-17 11:12:05,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:12:05,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:12:05,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:12:05,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:12:05,077 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:12:04" (1/1) ... [2023-11-17 11:12:05,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:12:04" (1/1) ... [2023-11-17 11:12:05,090 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:12:04" (1/1) ... [2023-11-17 11:12:05,091 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:12:04" (1/1) ... [2023-11-17 11:12:05,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:12:04" (1/1) ... [2023-11-17 11:12:05,103 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:12:04" (1/1) ... [2023-11-17 11:12:05,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:12:04" (1/1) ... [2023-11-17 11:12:05,107 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:12:04" (1/1) ... [2023-11-17 11:12:05,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:12:05,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:12:05,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:12:05,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:12:05,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:12:04" (1/1) ... [2023-11-17 11:12:05,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:12:05,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:12:05,141 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 11:12:05,175 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 11:12:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-17 11:12:05,187 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-17 11:12:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-17 11:12:05,187 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-17 11:12:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:12:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:12:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 11:12:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:12:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:12:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 11:12:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:12:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:12:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:12:05,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:12:05,190 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 11:12:05,367 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:12:05,370 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:12:05,647 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:12:05,931 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:12:05,931 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 11:12:05,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:12:05 BoogieIcfgContainer [2023-11-17 11:12:05,933 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:12:05,936 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:12:05,936 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:12:05,939 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:12:05,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:12:04" (1/3) ... [2023-11-17 11:12:05,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6cbbeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:12:05, skipping insertion in model container [2023-11-17 11:12:05,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:12:04" (2/3) ... [2023-11-17 11:12:05,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6cbbeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:12:05, skipping insertion in model container [2023-11-17 11:12:05,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:12:05" (3/3) ... [2023-11-17 11:12:05,942 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2023-11-17 11:12:05,957 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:12:05,957 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 11:12:05,957 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:12:06,033 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 11:12:06,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 41 transitions, 96 flow [2023-11-17 11:12:06,094 INFO L124 PetriNetUnfolderBase]: 7/39 cut-off events. [2023-11-17 11:12:06,094 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:12:06,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 39 events. 7/39 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 30. Up to 3 conditions per place. [2023-11-17 11:12:06,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 41 transitions, 96 flow [2023-11-17 11:12:06,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 37 transitions, 83 flow [2023-11-17 11:12:06,111 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:12:06,121 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 37 transitions, 83 flow [2023-11-17 11:12:06,123 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 37 transitions, 83 flow [2023-11-17 11:12:06,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 37 transitions, 83 flow [2023-11-17 11:12:06,133 INFO L124 PetriNetUnfolderBase]: 7/37 cut-off events. [2023-11-17 11:12:06,133 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:12:06,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 37 events. 7/37 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 30. Up to 3 conditions per place. [2023-11-17 11:12:06,135 INFO L119 LiptonReduction]: Number of co-enabled transitions 438 [2023-11-17 11:12:08,893 INFO L134 LiptonReduction]: Checked pairs total: 1210 [2023-11-17 11:12:08,893 INFO L136 LiptonReduction]: Total number of compositions: 25 [2023-11-17 11:12:08,914 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:12:08,921 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;@4ecf2395, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:12:08,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 11:12:08,922 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:12:08,922 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-17 11:12:08,922 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:12:08,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:12:08,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-17 11:12:08,923 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 2 more)] === [2023-11-17 11:12:08,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:12:08,928 INFO L85 PathProgramCache]: Analyzing trace with hash 606, now seen corresponding path program 1 times [2023-11-17 11:12:08,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:12:08,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180583457] [2023-11-17 11:12:08,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:12:08,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:12:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:12:09,028 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 11:12:09,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:12:09,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180583457] [2023-11-17 11:12:09,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180583457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:12:09,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:12:09,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-17 11:12:09,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115424243] [2023-11-17 11:12:09,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:12:09,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 11:12:09,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:12:09,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 11:12:09,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 11:12:09,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 66 [2023-11-17 11:12:09,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 59 flow. Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 11:12:09,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:12:09,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 66 [2023-11-17 11:12:09,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:12:09,185 INFO L124 PetriNetUnfolderBase]: 219/344 cut-off events. [2023-11-17 11:12:09,186 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-17 11:12:09,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 344 events. 219/344 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1045 event pairs, 141 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 624. Up to 345 conditions per place. [2023-11-17 11:12:09,191 INFO L140 encePairwiseOnDemand]: 65/66 looper letters, 20 selfloop transitions, 0 changer transitions 4/24 dead transitions. [2023-11-17 11:12:09,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 105 flow [2023-11-17 11:12:09,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 11:12:09,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-17 11:12:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 41 transitions. [2023-11-17 11:12:09,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2023-11-17 11:12:09,202 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 41 transitions. [2023-11-17 11:12:09,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 41 transitions. [2023-11-17 11:12:09,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:12:09,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 41 transitions. [2023-11-17 11:12:09,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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 11:12:09,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 11:12:09,212 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 11:12:09,214 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 59 flow. Second operand 2 states and 41 transitions. [2023-11-17 11:12:09,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 105 flow [2023-11-17 11:12:09,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 24 transitions, 100 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:12:09,220 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 44 flow [2023-11-17 11:12:09,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2023-11-17 11:12:09,224 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -3 predicate places. [2023-11-17 11:12:09,225 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 44 flow [2023-11-17 11:12:09,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 11:12:09,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:12:09,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:12:09,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:12:09,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:12:09,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:12:09,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1966545953, now seen corresponding path program 1 times [2023-11-17 11:12:09,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:12:09,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716574688] [2023-11-17 11:12:09,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:12:09,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:12:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:12:09,484 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 11:12:09,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:12:09,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716574688] [2023-11-17 11:12:09,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716574688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:12:09,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:12:09,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:12:09,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949282545] [2023-11-17 11:12:09,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:12:09,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:12:09,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:12:09,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:12:09,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:12:09,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 66 [2023-11-17 11:12:09,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 11:12:09,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:12:09,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 66 [2023-11-17 11:12:09,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:12:09,547 INFO L124 PetriNetUnfolderBase]: 102/189 cut-off events. [2023-11-17 11:12:09,547 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 11:12:09,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 189 events. 102/189 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 516 event pairs, 51 based on Foata normal form. 14/175 useless extension candidates. Maximal degree in co-relation 397. Up to 110 conditions per place. [2023-11-17 11:12:09,549 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 21 selfloop transitions, 2 changer transitions 5/28 dead transitions. [2023-11-17 11:12:09,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 28 transitions, 119 flow [2023-11-17 11:12:09,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:12:09,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:12:09,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2023-11-17 11:12:09,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25252525252525254 [2023-11-17 11:12:09,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 50 transitions. [2023-11-17 11:12:09,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 50 transitions. [2023-11-17 11:12:09,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:12:09,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 50 transitions. [2023-11-17 11:12:09,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 11:12:09,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 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 11:12:09,552 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 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 11:12:09,552 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 44 flow. Second operand 3 states and 50 transitions. [2023-11-17 11:12:09,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 28 transitions, 119 flow [2023-11-17 11:12:09,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 28 transitions, 119 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:12:09,554 INFO L231 Difference]: Finished difference. Result has 24 places, 19 transitions, 50 flow [2023-11-17 11:12:09,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=24, PETRI_TRANSITIONS=19} [2023-11-17 11:12:09,554 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -3 predicate places. [2023-11-17 11:12:09,555 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 19 transitions, 50 flow [2023-11-17 11:12:09,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 11:12:09,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:12:09,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:12:09,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:12:09,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:12:09,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:12:09,556 INFO L85 PathProgramCache]: Analyzing trace with hash 892376910, now seen corresponding path program 1 times [2023-11-17 11:12:09,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:12:09,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5328586] [2023-11-17 11:12:09,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:12:09,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:12:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:12:09,645 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 11:12:09,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:12:09,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5328586] [2023-11-17 11:12:09,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5328586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:12:09,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:12:09,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:12:09,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643866875] [2023-11-17 11:12:09,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:12:09,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:12:09,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:12:09,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:12:09,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:12:09,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 66 [2023-11-17 11:12:09,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 11:12:09,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:12:09,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 66 [2023-11-17 11:12:09,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:12:09,720 INFO L124 PetriNetUnfolderBase]: 88/159 cut-off events. [2023-11-17 11:12:09,720 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-17 11:12:09,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 159 events. 88/159 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 378 event pairs, 60 based on Foata normal form. 6/149 useless extension candidates. Maximal degree in co-relation 354. Up to 148 conditions per place. [2023-11-17 11:12:09,722 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-11-17 11:12:09,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 24 transitions, 110 flow [2023-11-17 11:12:09,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:12:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:12:09,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2023-11-17 11:12:09,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2474747474747475 [2023-11-17 11:12:09,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 49 transitions. [2023-11-17 11:12:09,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 49 transitions. [2023-11-17 11:12:09,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:12:09,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 49 transitions. [2023-11-17 11:12:09,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 11:12:09,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 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 11:12:09,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 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 11:12:09,749 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 3 states and 49 transitions. [2023-11-17 11:12:09,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 24 transitions, 110 flow [2023-11-17 11:12:09,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 24 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:12:09,750 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 58 flow [2023-11-17 11:12:09,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2023-11-17 11:12:09,751 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2023-11-17 11:12:09,751 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 58 flow [2023-11-17 11:12:09,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 11:12:09,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:12:09,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:12:09,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:12:09,752 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:12:09,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:12:09,753 INFO L85 PathProgramCache]: Analyzing trace with hash 2090131673, now seen corresponding path program 1 times [2023-11-17 11:12:09,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:12:09,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069878722] [2023-11-17 11:12:09,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:12:09,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:12:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:12:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:12:09,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:12:09,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069878722] [2023-11-17 11:12:09,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069878722] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:12:09,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114177148] [2023-11-17 11:12:09,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:12:09,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:12:09,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:12:09,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:12:09,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 11:12:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:12:10,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 11:12:10,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:12:10,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:12:10,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:12:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:12:10,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114177148] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:12:10,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:12:10,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-17 11:12:10,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648525128] [2023-11-17 11:12:10,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:12:10,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:12:10,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:12:10,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:12:10,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:12:10,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 66 [2023-11-17 11:12:10,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 58 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 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 11:12:10,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:12:10,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 66 [2023-11-17 11:12:10,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:12:10,189 INFO L124 PetriNetUnfolderBase]: 106/195 cut-off events. [2023-11-17 11:12:10,190 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-17 11:12:10,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 195 events. 106/195 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 490 event pairs, 60 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 473. Up to 148 conditions per place. [2023-11-17 11:12:10,194 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 34 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2023-11-17 11:12:10,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 188 flow [2023-11-17 11:12:10,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:12:10,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:12:10,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2023-11-17 11:12:10,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.22727272727272727 [2023-11-17 11:12:10,197 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 90 transitions. [2023-11-17 11:12:10,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 90 transitions. [2023-11-17 11:12:10,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:12:10,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 90 transitions. [2023-11-17 11:12:10,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 11:12:10,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 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 11:12:10,200 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 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 11:12:10,200 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 58 flow. Second operand 6 states and 90 transitions. [2023-11-17 11:12:10,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 188 flow [2023-11-17 11:12:10,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 184 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 11:12:10,202 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 90 flow [2023-11-17 11:12:10,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=90, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-11-17 11:12:10,204 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-11-17 11:12:10,205 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 90 flow [2023-11-17 11:12:10,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 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 11:12:10,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:12:10,205 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:12:10,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 11:12:10,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:12:10,416 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:12:10,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:12:10,417 INFO L85 PathProgramCache]: Analyzing trace with hash 280764942, now seen corresponding path program 2 times [2023-11-17 11:12:10,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:12:10,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984364053] [2023-11-17 11:12:10,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:12:10,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:12:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:12:10,571 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:12:10,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:12:10,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984364053] [2023-11-17 11:12:10,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984364053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:12:10,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:12:10,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:12:10,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91395519] [2023-11-17 11:12:10,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:12:10,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:12:10,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:12:10,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:12:10,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:12:10,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 66 [2023-11-17 11:12:10,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 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 11:12:10,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:12:10,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 66 [2023-11-17 11:12:10,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:12:10,644 INFO L124 PetriNetUnfolderBase]: 68/137 cut-off events. [2023-11-17 11:12:10,644 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-17 11:12:10,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 137 events. 68/137 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 318 event pairs, 6 based on Foata normal form. 16/141 useless extension candidates. Maximal degree in co-relation 377. Up to 116 conditions per place. [2023-11-17 11:12:10,646 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 26 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2023-11-17 11:12:10,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 163 flow [2023-11-17 11:12:10,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:12:10,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:12:10,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2023-11-17 11:12:10,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25757575757575757 [2023-11-17 11:12:10,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 51 transitions. [2023-11-17 11:12:10,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 51 transitions. [2023-11-17 11:12:10,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:12:10,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 51 transitions. [2023-11-17 11:12:10,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 11:12:10,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 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 11:12:10,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 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 11:12:10,649 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 90 flow. Second operand 3 states and 51 transitions. [2023-11-17 11:12:10,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 163 flow [2023-11-17 11:12:10,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 149 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 11:12:10,651 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 82 flow [2023-11-17 11:12:10,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-11-17 11:12:10,651 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-11-17 11:12:10,652 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 82 flow [2023-11-17 11:12:10,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 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 11:12:10,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:12:10,652 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:12:10,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:12:10,652 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:12:10,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:12:10,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1167688477, now seen corresponding path program 1 times [2023-11-17 11:12:10,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:12:10,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751395449] [2023-11-17 11:12:10,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:12:10,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:12:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:12:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:12:10,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:12:10,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751395449] [2023-11-17 11:12:10,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751395449] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:12:10,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586428717] [2023-11-17 11:12:10,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:12:10,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:12:10,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:12:10,837 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:12:10,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 11:12:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:12:10,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 11:12:10,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:12:11,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:12:11,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:12:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:12:11,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586428717] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:12:11,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:12:11,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-17 11:12:11,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641770685] [2023-11-17 11:12:11,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:12:11,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:12:11,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:12:11,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:12:11,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:12:11,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 66 [2023-11-17 11:12:11,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 82 flow. Second operand has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 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 11:12:11,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:12:11,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 66 [2023-11-17 11:12:11,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:12:11,242 INFO L124 PetriNetUnfolderBase]: 86/179 cut-off events. [2023-11-17 11:12:11,242 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-17 11:12:11,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 179 events. 86/179 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 381 event pairs, 40 based on Foata normal form. 24/191 useless extension candidates. Maximal degree in co-relation 509. Up to 110 conditions per place. [2023-11-17 11:12:11,244 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 48 selfloop transitions, 11 changer transitions 0/59 dead transitions. [2023-11-17 11:12:11,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 59 transitions, 316 flow [2023-11-17 11:12:11,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:12:11,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:12:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2023-11-17 11:12:11,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2032828282828283 [2023-11-17 11:12:11,248 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 161 transitions. [2023-11-17 11:12:11,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 161 transitions. [2023-11-17 11:12:11,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:12:11,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 161 transitions. [2023-11-17 11:12:11,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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 11:12:11,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 66.0) internal successors, (858), 13 states have internal predecessors, (858), 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 11:12:11,252 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 66.0) internal successors, (858), 13 states have internal predecessors, (858), 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 11:12:11,252 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 82 flow. Second operand 12 states and 161 transitions. [2023-11-17 11:12:11,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 59 transitions, 316 flow [2023-11-17 11:12:11,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 59 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:12:11,258 INFO L231 Difference]: Finished difference. Result has 49 places, 29 transitions, 163 flow [2023-11-17 11:12:11,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=163, PETRI_PLACES=49, PETRI_TRANSITIONS=29} [2023-11-17 11:12:11,260 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-11-17 11:12:11,260 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 29 transitions, 163 flow [2023-11-17 11:12:11,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 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 11:12:11,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:12:11,261 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:12:11,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 11:12:11,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-17 11:12:11,468 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:12:11,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:12:11,468 INFO L85 PathProgramCache]: Analyzing trace with hash 194161037, now seen corresponding path program 2 times [2023-11-17 11:12:11,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:12:11,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90536617] [2023-11-17 11:12:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:12:11,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:12:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:12:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:12:11,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:12:11,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90536617] [2023-11-17 11:12:11,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90536617] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:12:11,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183861185] [2023-11-17 11:12:11,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:12:11,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:12:11,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:12:11,771 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:12:11,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 11:12:12,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 11:12:12,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:12:12,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 11:12:12,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:12:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:12:12,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:12:12,249 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:12:12,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183861185] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:12:12,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:12:12,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-11-17 11:12:12,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265640588] [2023-11-17 11:12:12,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:12:12,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 11:12:12,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:12:12,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 11:12:12,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-17 11:12:12,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 66 [2023-11-17 11:12:12,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 29 transitions, 163 flow. Second operand has 25 states, 25 states have (on average 9.48) internal successors, (237), 25 states have internal predecessors, (237), 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 11:12:12,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:12:12,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 66 [2023-11-17 11:12:12,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:12:12,546 INFO L124 PetriNetUnfolderBase]: 122/263 cut-off events. [2023-11-17 11:12:12,547 INFO L125 PetriNetUnfolderBase]: For 1938/1938 co-relation queries the response was YES. [2023-11-17 11:12:12,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 263 events. 122/263 cut-off events. For 1938/1938 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 562 event pairs, 40 based on Foata normal form. 48/299 useless extension candidates. Maximal degree in co-relation 929. Up to 110 conditions per place. [2023-11-17 11:12:12,549 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 84 selfloop transitions, 23 changer transitions 0/107 dead transitions. [2023-11-17 11:12:12,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 107 transitions, 649 flow [2023-11-17 11:12:12,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 11:12:12,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 11:12:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 311 transitions. [2023-11-17 11:12:12,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19633838383838384 [2023-11-17 11:12:12,553 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 311 transitions. [2023-11-17 11:12:12,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 311 transitions. [2023-11-17 11:12:12,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:12:12,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 311 transitions. [2023-11-17 11:12:12,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 12.958333333333334) internal successors, (311), 24 states have internal predecessors, (311), 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 11:12:12,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 66.0) internal successors, (1650), 25 states have internal predecessors, (1650), 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 11:12:12,561 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 66.0) internal successors, (1650), 25 states have internal predecessors, (1650), 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 11:12:12,562 INFO L175 Difference]: Start difference. First operand has 49 places, 29 transitions, 163 flow. Second operand 24 states and 311 transitions. [2023-11-17 11:12:12,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 107 transitions, 649 flow [2023-11-17 11:12:12,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 107 transitions, 577 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-11-17 11:12:12,568 INFO L231 Difference]: Finished difference. Result has 79 places, 41 transitions, 283 flow [2023-11-17 11:12:12,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=283, PETRI_PLACES=79, PETRI_TRANSITIONS=41} [2023-11-17 11:12:12,569 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 52 predicate places. [2023-11-17 11:12:12,569 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 41 transitions, 283 flow [2023-11-17 11:12:12,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.48) internal successors, (237), 25 states have internal predecessors, (237), 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 11:12:12,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:12:12,569 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:12:12,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 11:12:12,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:12:12,777 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:12:12,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:12:12,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1361281357, now seen corresponding path program 3 times [2023-11-17 11:12:12,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:12:12,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509830774] [2023-11-17 11:12:12,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:12:12,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:12:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:12:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:12:13,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:12:13,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509830774] [2023-11-17 11:12:13,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509830774] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:12:13,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246781313] [2023-11-17 11:12:13,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:12:13,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:12:13,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:12:13,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:12:13,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 11:15:13,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-11-17 11:15:13,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:15:13,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-17 11:15:13,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:15:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:15:13,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:15:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:15:13,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246781313] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:15:13,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:15:13,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2023-11-17 11:15:13,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829357314] [2023-11-17 11:15:13,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:15:13,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-17 11:15:13,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:15:13,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-17 11:15:13,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-11-17 11:15:13,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 66 [2023-11-17 11:15:13,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 41 transitions, 283 flow. Second operand has 49 states, 49 states have (on average 9.244897959183673) internal successors, (453), 49 states have internal predecessors, (453), 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 11:15:13,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:15:13,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 66 [2023-11-17 11:15:13,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:15:14,578 INFO L124 PetriNetUnfolderBase]: 194/431 cut-off events. [2023-11-17 11:15:14,578 INFO L125 PetriNetUnfolderBase]: For 21066/21066 co-relation queries the response was YES. [2023-11-17 11:15:14,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 431 events. 194/431 cut-off events. For 21066/21066 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 922 event pairs, 40 based on Foata normal form. 96/515 useless extension candidates. Maximal degree in co-relation 1649. Up to 157 conditions per place. [2023-11-17 11:15:14,583 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 156 selfloop transitions, 47 changer transitions 0/203 dead transitions. [2023-11-17 11:15:14,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 203 transitions, 1249 flow [2023-11-17 11:15:14,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-17 11:15:14,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-11-17 11:15:14,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 611 transitions. [2023-11-17 11:15:14,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19286616161616163 [2023-11-17 11:15:14,587 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 611 transitions. [2023-11-17 11:15:14,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 611 transitions. [2023-11-17 11:15:14,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:15:14,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 611 transitions. [2023-11-17 11:15:14,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 12.729166666666666) internal successors, (611), 48 states have internal predecessors, (611), 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 11:15:14,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 66.0) internal successors, (3234), 49 states have internal predecessors, (3234), 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 11:15:14,594 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 66.0) internal successors, (3234), 49 states have internal predecessors, (3234), 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 11:15:14,594 INFO L175 Difference]: Start difference. First operand has 79 places, 41 transitions, 283 flow. Second operand 48 states and 611 transitions. [2023-11-17 11:15:14,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 203 transitions, 1249 flow [2023-11-17 11:15:14,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 203 transitions, 1105 flow, removed 61 selfloop flow, removed 11 redundant places. [2023-11-17 11:15:14,607 INFO L231 Difference]: Finished difference. Result has 139 places, 65 transitions, 523 flow [2023-11-17 11:15:14,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=523, PETRI_PLACES=139, PETRI_TRANSITIONS=65} [2023-11-17 11:15:14,608 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 112 predicate places. [2023-11-17 11:15:14,608 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 65 transitions, 523 flow [2023-11-17 11:15:14,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 9.244897959183673) internal successors, (453), 49 states have internal predecessors, (453), 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 11:15:14,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:15:14,608 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:15:14,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 11:15:14,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:15:14,833 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:15:14,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:15:14,834 INFO L85 PathProgramCache]: Analyzing trace with hash -169586483, now seen corresponding path program 4 times [2023-11-17 11:15:14,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:15:14,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450361160] [2023-11-17 11:15:14,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:15:14,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:15:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:17,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:15:17,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:15:17,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450361160] [2023-11-17 11:15:17,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450361160] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:15:17,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978420601] [2023-11-17 11:15:17,580 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:15:17,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:15:17,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:15:17,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:15:17,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 11:15:18,110 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:15:18,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:15:18,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 1290 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-17 11:15:18,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:15:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:15:18,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:15:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:15:20,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978420601] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:15:20,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:15:20,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2023-11-17 11:15:20,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090493883] [2023-11-17 11:15:20,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:15:20,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-11-17 11:15:20,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:15:20,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-11-17 11:15:20,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-11-17 11:15:20,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 66 [2023-11-17 11:15:20,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 65 transitions, 523 flow. Second operand has 97 states, 97 states have (on average 9.123711340206185) internal successors, (885), 97 states have internal predecessors, (885), 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 11:15:20,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:15:20,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 66 [2023-11-17 11:15:20,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:15:22,889 INFO L124 PetriNetUnfolderBase]: 338/767 cut-off events. [2023-11-17 11:15:22,889 INFO L125 PetriNetUnfolderBase]: For 194106/194106 co-relation queries the response was YES. [2023-11-17 11:15:22,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3142 conditions, 767 events. 338/767 cut-off events. For 194106/194106 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1642 event pairs, 40 based on Foata normal form. 192/947 useless extension candidates. Maximal degree in co-relation 3089. Up to 301 conditions per place. [2023-11-17 11:15:22,897 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 300 selfloop transitions, 95 changer transitions 0/395 dead transitions. [2023-11-17 11:15:22,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 395 transitions, 2449 flow [2023-11-17 11:15:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-17 11:15:22,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2023-11-17 11:15:22,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 1211 transitions. [2023-11-17 11:15:22,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.1911300505050505 [2023-11-17 11:15:22,904 INFO L72 ComplementDD]: Start complementDD. Operand 96 states and 1211 transitions. [2023-11-17 11:15:22,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 96 states and 1211 transitions. [2023-11-17 11:15:22,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:15:22,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 96 states and 1211 transitions. [2023-11-17 11:15:22,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 97 states, 96 states have (on average 12.614583333333334) internal successors, (1211), 96 states have internal predecessors, (1211), 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 11:15:22,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 97 states, 97 states have (on average 66.0) internal successors, (6402), 97 states have internal predecessors, (6402), 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 11:15:22,917 INFO L81 ComplementDD]: Finished complementDD. Result has 97 states, 97 states have (on average 66.0) internal successors, (6402), 97 states have internal predecessors, (6402), 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 11:15:22,918 INFO L175 Difference]: Start difference. First operand has 139 places, 65 transitions, 523 flow. Second operand 96 states and 1211 transitions. [2023-11-17 11:15:22,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 395 transitions, 2449 flow [2023-11-17 11:15:22,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 395 transitions, 2161 flow, removed 121 selfloop flow, removed 23 redundant places. [2023-11-17 11:15:22,962 INFO L231 Difference]: Finished difference. Result has 259 places, 113 transitions, 1003 flow [2023-11-17 11:15:22,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=1003, PETRI_PLACES=259, PETRI_TRANSITIONS=113} [2023-11-17 11:15:22,963 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 232 predicate places. [2023-11-17 11:15:22,963 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 113 transitions, 1003 flow [2023-11-17 11:15:22,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 9.123711340206185) internal successors, (885), 97 states have internal predecessors, (885), 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 11:15:22,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:15:22,964 INFO L208 CegarLoopForPetriNet]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:15:22,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 11:15:23,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:15:23,174 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:15:23,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:15:23,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1373474867, now seen corresponding path program 5 times [2023-11-17 11:15:23,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:15:23,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609177104] [2023-11-17 11:15:23,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:15:23,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:15:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:15:31,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:15:31,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609177104] [2023-11-17 11:15:31,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609177104] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:15:31,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495033957] [2023-11-17 11:15:31,287 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 11:15:31,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:15:31,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:15:31,293 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:15:31,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Received shutdown request... [2023-11-17 11:21:32,613 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 11:21:32,613 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 11:21:33,629 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 [2023-11-17 11:21:33,824 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2023-11-17 11:21:33,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 137 [2023-11-17 11:21:33,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 11:21:33,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:21:33,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2023-11-17 11:21:33,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455302992] [2023-11-17 11:21:33,845 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-17 11:21:33,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-11-17 11:21:33,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:21:33,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-11-17 11:21:33,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-11-17 11:21:33,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 66 [2023-11-17 11:21:33,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 113 transitions, 1003 flow. Second operand has 97 states, 97 states have (on average 9.092783505154639) internal successors, (882), 97 states have internal predecessors, (882), 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 11:21:33,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:21:33,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 66 [2023-11-17 11:21:33,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:21:33,871 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-17 11:21:33,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 11:21:33,871 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-11-17 11:21:33,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-17 11:21:33,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-17 11:21:33,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-17 11:21:33,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-17 11:21:33,874 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1] [2023-11-17 11:21:33,879 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:21:33,879 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:21:33,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:21:33 BasicIcfg [2023-11-17 11:21:33,882 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:21:33,882 INFO L158 Benchmark]: Toolchain (without parser) took 569582.07ms. Allocated memory was 197.1MB in the beginning and 440.4MB in the end (delta: 243.3MB). Free memory was 150.2MB in the beginning and 383.7MB in the end (delta: -233.6MB). Peak memory consumption was 272.1MB. Max. memory is 8.0GB. [2023-11-17 11:21:33,882 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 197.1MB. Free memory is still 156.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:21:33,883 INFO L158 Benchmark]: CACSL2BoogieTranslator took 655.33ms. Allocated memory is still 197.1MB. Free memory was 149.8MB in the beginning and 119.7MB in the end (delta: 30.1MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-11-17 11:21:33,883 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.70ms. Allocated memory is still 197.1MB. Free memory was 119.7MB in the beginning and 172.8MB in the end (delta: -53.1MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. [2023-11-17 11:21:33,883 INFO L158 Benchmark]: Boogie Preprocessor took 42.50ms. Allocated memory is still 197.1MB. Free memory was 172.8MB in the beginning and 170.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:21:33,883 INFO L158 Benchmark]: RCFGBuilder took 822.48ms. Allocated memory is still 197.1MB. Free memory was 170.2MB in the beginning and 108.3MB in the end (delta: 61.9MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. [2023-11-17 11:21:33,884 INFO L158 Benchmark]: TraceAbstraction took 567945.52ms. Allocated memory was 197.1MB in the beginning and 440.4MB in the end (delta: 243.3MB). Free memory was 107.8MB in the beginning and 383.7MB in the end (delta: -275.9MB). Peak memory consumption was 229.1MB. Max. memory is 8.0GB. [2023-11-17 11:21:33,885 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 197.1MB. Free memory is still 156.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 655.33ms. Allocated memory is still 197.1MB. Free memory was 149.8MB in the beginning and 119.7MB in the end (delta: 30.1MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 106.70ms. Allocated memory is still 197.1MB. Free memory was 119.7MB in the beginning and 172.8MB in the end (delta: -53.1MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.50ms. Allocated memory is still 197.1MB. Free memory was 172.8MB in the beginning and 170.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 822.48ms. Allocated memory is still 197.1MB. Free memory was 170.2MB in the beginning and 108.3MB in the end (delta: 61.9MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. * TraceAbstraction took 567945.52ms. Allocated memory was 197.1MB in the beginning and 440.4MB in the end (delta: 243.3MB). Free memory was 107.8MB in the beginning and 383.7MB in the end (delta: -275.9MB). Peak memory consumption was 229.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 37 PlacesBefore, 27 PlacesAfterwards, 37 TransitionsBefore, 25 TransitionsAfterwards, 438 CoEnabledTransitionPairs, 3 FixpointIterations, 5 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 3 ConcurrentYvCompositions, 2 ChoiceCompositions, 25 TotalNumberOfCompositions, 1210 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 738, independent: 667, independent conditional: 0, independent unconditional: 667, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 309, independent: 284, independent conditional: 0, independent unconditional: 284, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 309, independent: 277, independent conditional: 0, independent unconditional: 277, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 32, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 145, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 19, unknown conditional: 0, unknown unconditional: 19] ], Cache Queries: [ total: 738, independent: 383, independent conditional: 0, independent unconditional: 383, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 312, unknown conditional: 0, unknown unconditional: 312] , Statistics on independence cache: Total cache size (in pairs): 111, Positive cache size: 100, Positive conditional cache size: 0, Positive unconditional cache size: 100, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 1, Unknown conditional cache size: 0, Unknown unconditional cache size: 1 - TimeoutResultAtElement [Line: 1033]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1049]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1052]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1053]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 58 locations, 5 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: 567.8s, OverallIterations: 10, TraceHistogramMax: 94, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1656 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1656 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1319 IncrementalHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 1319 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 477 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1003occurred in iteration=9, InterpolantAutomatonStates: 197, 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: 0.3s SsaConstructionTime, 179.9s SatisfiabilityAnalysisTime, 15.9s InterpolantComputationTime, 425 NumberOfCodeBlocks, 425 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 547 ConstructedInterpolants, 0 QuantifiedInterpolants, 1361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2916 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 10/8675 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown