/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_safe-5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 14:56:16,557 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 14:56:16,623 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 14:56:16,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 14:56:16,647 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 14:56:16,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 14:56:16,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 14:56:16,648 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 14:56:16,649 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 14:56:16,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 14:56:16,652 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 14:56:16,652 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 14:56:16,653 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 14:56:16,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 14:56:16,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 14:56:16,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 14:56:16,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 14:56:16,654 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 14:56:16,654 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 14:56:16,654 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 14:56:16,655 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 14:56:16,655 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 14:56:16,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 14:56:16,656 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 14:56:16,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 14:56:16,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 14:56:16,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 14:56:16,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 14:56:16,656 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 14:56:16,657 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 14:56:16,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 14:56:16,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 14:56:16,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 14:56:16,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 14:56:16,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 14:56:16,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 14:56:16,872 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 14:56:16,872 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 14:56:16,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-5.i [2023-11-17 14:56:17,913 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 14:56:18,129 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 14:56:18,132 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-5.i [2023-11-17 14:56:18,148 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92a34ad80/8d3ae8718e304b54aabc807c219ac367/FLAG91efc2e79 [2023-11-17 14:56:18,160 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92a34ad80/8d3ae8718e304b54aabc807c219ac367 [2023-11-17 14:56:18,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 14:56:18,163 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 14:56:18,164 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 14:56:18,164 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 14:56:18,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 14:56:18,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:56:18" (1/1) ... [2023-11-17 14:56:18,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ecf3382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:18, skipping insertion in model container [2023-11-17 14:56:18,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:56:18" (1/1) ... [2023-11-17 14:56:18,202 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 14:56:18,409 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/fib_safe-5.i[30241,30254] [2023-11-17 14:56:18,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 14:56:18,434 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 14:56:18,463 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/fib_safe-5.i[30241,30254] [2023-11-17 14:56:18,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 14:56:18,499 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 14:56:18,499 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 14:56:18,504 INFO L206 MainTranslator]: Completed translation [2023-11-17 14:56:18,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:18 WrapperNode [2023-11-17 14:56:18,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 14:56:18,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 14:56:18,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 14:56:18,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 14:56:18,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:18" (1/1) ... [2023-11-17 14:56:18,519 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:18" (1/1) ... [2023-11-17 14:56:18,539 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2023-11-17 14:56:18,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 14:56:18,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 14:56:18,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 14:56:18,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 14:56:18,549 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:18" (1/1) ... [2023-11-17 14:56:18,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:18" (1/1) ... [2023-11-17 14:56:18,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:18" (1/1) ... [2023-11-17 14:56:18,553 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:18" (1/1) ... [2023-11-17 14:56:18,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:18" (1/1) ... [2023-11-17 14:56:18,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:18" (1/1) ... [2023-11-17 14:56:18,559 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:18" (1/1) ... [2023-11-17 14:56:18,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:18" (1/1) ... [2023-11-17 14:56:18,561 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 14:56:18,562 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 14:56:18,562 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 14:56:18,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 14:56:18,563 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:18" (1/1) ... [2023-11-17 14:56:18,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 14:56:18,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 14:56:18,606 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 14:56:18,609 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 14:56:18,628 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-17 14:56:18,628 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-17 14:56:18,629 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-17 14:56:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-17 14:56:18,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 14:56:18,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 14:56:18,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 14:56:18,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 14:56:18,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 14:56:18,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 14:56:18,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 14:56:18,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 14:56:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 14:56:18,631 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 14:56:18,730 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 14:56:18,732 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 14:56:18,924 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 14:56:18,932 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 14:56:18,933 INFO L307 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-17 14:56:18,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:56:18 BoogieIcfgContainer [2023-11-17 14:56:18,934 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 14:56:18,935 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 14:56:18,935 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 14:56:18,937 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 14:56:18,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 02:56:18" (1/3) ... [2023-11-17 14:56:18,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b769e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:56:18, skipping insertion in model container [2023-11-17 14:56:18,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:18" (2/3) ... [2023-11-17 14:56:18,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b769e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:56:18, skipping insertion in model container [2023-11-17 14:56:18,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:56:18" (3/3) ... [2023-11-17 14:56:18,939 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-5.i [2023-11-17 14:56:18,951 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 14:56:18,951 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 14:56:18,951 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 14:56:18,989 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 14:56:19,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 97 transitions, 202 flow [2023-11-17 14:56:19,041 INFO L124 PetriNetUnfolderBase]: 7/95 cut-off events. [2023-11-17 14:56:19,042 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 14:56:19,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 95 events. 7/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2023-11-17 14:56:19,046 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 97 transitions, 202 flow [2023-11-17 14:56:19,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 95 transitions, 196 flow [2023-11-17 14:56:19,052 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 14:56:19,059 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 95 transitions, 196 flow [2023-11-17 14:56:19,061 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 95 transitions, 196 flow [2023-11-17 14:56:19,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 95 transitions, 196 flow [2023-11-17 14:56:19,079 INFO L124 PetriNetUnfolderBase]: 7/95 cut-off events. [2023-11-17 14:56:19,079 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 14:56:19,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 95 events. 7/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2023-11-17 14:56:19,086 INFO L119 LiptonReduction]: Number of co-enabled transitions 2134 [2023-11-17 14:56:21,086 INFO L134 LiptonReduction]: Checked pairs total: 1542 [2023-11-17 14:56:21,087 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-11-17 14:56:21,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 14:56:21,125 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;@354a3867, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 14:56:21,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 14:56:21,131 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 14:56:21,131 INFO L124 PetriNetUnfolderBase]: 3/12 cut-off events. [2023-11-17 14:56:21,131 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 14:56:21,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:56:21,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 14:56:21,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 14:56:21,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:56:21,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1878456515, now seen corresponding path program 1 times [2023-11-17 14:56:21,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:56:21,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104968027] [2023-11-17 14:56:21,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:56:21,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:56:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:56:21,311 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 14:56:21,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:56:21,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104968027] [2023-11-17 14:56:21,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104968027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:56:21,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:56:21,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 14:56:21,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186972322] [2023-11-17 14:56:21,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:56:21,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 14:56:21,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:56:21,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 14:56:21,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 14:56:21,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 192 [2023-11-17 14:56:21,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 14:56:21,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:56:21,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 192 [2023-11-17 14:56:21,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:56:21,401 INFO L124 PetriNetUnfolderBase]: 97/149 cut-off events. [2023-11-17 14:56:21,401 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 14:56:21,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 149 events. 97/149 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 331 event pairs, 20 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 300. Up to 91 conditions per place. [2023-11-17 14:56:21,403 INFO L140 encePairwiseOnDemand]: 188/192 looper letters, 18 selfloop transitions, 2 changer transitions 1/21 dead transitions. [2023-11-17 14:56:21,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 21 transitions, 90 flow [2023-11-17 14:56:21,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 14:56:21,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 14:56:21,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-11-17 14:56:21,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774305555555556 [2023-11-17 14:56:21,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-11-17 14:56:21,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-11-17 14:56:21,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:56:21,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-11-17 14:56:21,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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 14:56:21,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 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 14:56:21,421 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 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 14:56:21,423 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 3 states and 275 transitions. [2023-11-17 14:56:21,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 21 transitions, 90 flow [2023-11-17 14:56:21,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 14:56:21,425 INFO L231 Difference]: Finished difference. Result has 19 places, 14 transitions, 42 flow [2023-11-17 14:56:21,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=19, PETRI_TRANSITIONS=14} [2023-11-17 14:56:21,429 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2023-11-17 14:56:21,429 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 14 transitions, 42 flow [2023-11-17 14:56:21,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 14:56:21,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:56:21,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:56:21,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 14:56:21,430 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 14:56:21,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:56:21,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1897390208, now seen corresponding path program 1 times [2023-11-17 14:56:21,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:56:21,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575701349] [2023-11-17 14:56:21,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:56:21,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:56:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:56:21,484 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 14:56:21,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:56:21,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575701349] [2023-11-17 14:56:21,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575701349] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 14:56:21,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359086332] [2023-11-17 14:56:21,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:56:21,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 14:56:21,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 14:56:21,505 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 14:56:21,507 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 14:56:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:56:21,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 14:56:21,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 14:56:21,603 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 14:56:21,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 14:56:21,616 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 14:56:21,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359086332] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 14:56:21,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 14:56:21,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-17 14:56:21,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313743857] [2023-11-17 14:56:21,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 14:56:21,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 14:56:21,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:56:21,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 14:56:21,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-17 14:56:21,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 192 [2023-11-17 14:56:21,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 42 flow. Second operand has 7 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 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 14:56:21,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:56:21,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 192 [2023-11-17 14:56:21,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:56:21,703 INFO L124 PetriNetUnfolderBase]: 133/203 cut-off events. [2023-11-17 14:56:21,704 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 14:56:21,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 203 events. 133/203 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 448 event pairs, 20 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 471. Up to 64 conditions per place. [2023-11-17 14:56:21,705 INFO L140 encePairwiseOnDemand]: 189/192 looper letters, 36 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2023-11-17 14:56:21,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 41 transitions, 184 flow [2023-11-17 14:56:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 14:56:21,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 14:56:21,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 548 transitions. [2023-11-17 14:56:21,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2023-11-17 14:56:21,708 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 548 transitions. [2023-11-17 14:56:21,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 548 transitions. [2023-11-17 14:56:21,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:56:21,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 548 transitions. [2023-11-17 14:56:21,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 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 14:56:21,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 192.0) internal successors, (1344), 7 states have internal predecessors, (1344), 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 14:56:21,713 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 192.0) internal successors, (1344), 7 states have internal predecessors, (1344), 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 14:56:21,713 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 42 flow. Second operand 6 states and 548 transitions. [2023-11-17 14:56:21,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 41 transitions, 184 flow [2023-11-17 14:56:21,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 41 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 14:56:21,714 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 76 flow [2023-11-17 14:56:21,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=76, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-11-17 14:56:21,714 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 7 predicate places. [2023-11-17 14:56:21,715 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 76 flow [2023-11-17 14:56:21,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 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 14:56:21,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:56:21,715 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-17 14:56:21,734 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 14:56:21,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 14:56:21,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 14:56:21,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:56:21,921 INFO L85 PathProgramCache]: Analyzing trace with hash -912867331, now seen corresponding path program 2 times [2023-11-17 14:56:21,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:56:21,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514886417] [2023-11-17 14:56:21,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:56:21,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:56:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:56:22,040 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 14:56:22,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:56:22,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514886417] [2023-11-17 14:56:22,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514886417] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 14:56:22,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552464764] [2023-11-17 14:56:22,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 14:56:22,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 14:56:22,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 14:56:22,062 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 14:56:22,104 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 14:56:22,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 14:56:22,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 14:56:22,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 14:56:22,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 14:56:22,167 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 14:56:22,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 14:56:22,206 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 14:56:22,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552464764] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 14:56:22,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 14:56:22,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-17 14:56:22,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322848720] [2023-11-17 14:56:22,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 14:56:22,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 14:56:22,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:56:22,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 14:56:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-17 14:56:22,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 192 [2023-11-17 14:56:22,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 76 flow. Second operand has 13 states, 13 states have (on average 85.38461538461539) internal successors, (1110), 13 states have internal predecessors, (1110), 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 14:56:22,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:56:22,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 192 [2023-11-17 14:56:22,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:56:22,348 INFO L124 PetriNetUnfolderBase]: 241/365 cut-off events. [2023-11-17 14:56:22,348 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2023-11-17 14:56:22,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 365 events. 241/365 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 847 event pairs, 20 based on Foata normal form. 54/339 useless extension candidates. Maximal degree in co-relation 993. Up to 109 conditions per place. [2023-11-17 14:56:22,351 INFO L140 encePairwiseOnDemand]: 189/192 looper letters, 72 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2023-11-17 14:56:22,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 83 transitions, 398 flow [2023-11-17 14:56:22,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 14:56:22,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 14:56:22,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1097 transitions. [2023-11-17 14:56:22,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4761284722222222 [2023-11-17 14:56:22,354 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1097 transitions. [2023-11-17 14:56:22,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1097 transitions. [2023-11-17 14:56:22,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:56:22,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1097 transitions. [2023-11-17 14:56:22,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 91.41666666666667) internal successors, (1097), 12 states have internal predecessors, (1097), 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 14:56:22,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 192.0) internal successors, (2496), 13 states have internal predecessors, (2496), 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 14:56:22,360 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 192.0) internal successors, (2496), 13 states have internal predecessors, (2496), 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 14:56:22,360 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 76 flow. Second operand 12 states and 1097 transitions. [2023-11-17 14:56:22,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 83 transitions, 398 flow [2023-11-17 14:56:22,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 83 transitions, 384 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 14:56:22,362 INFO L231 Difference]: Finished difference. Result has 41 places, 23 transitions, 146 flow [2023-11-17 14:56:22,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=146, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2023-11-17 14:56:22,363 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 23 predicate places. [2023-11-17 14:56:22,363 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 146 flow [2023-11-17 14:56:22,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 85.38461538461539) internal successors, (1110), 13 states have internal predecessors, (1110), 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 14:56:22,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:56:22,364 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-11-17 14:56:22,379 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 14:56:22,569 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,SelfDestructingSolverStorable2 [2023-11-17 14:56:22,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 14:56:22,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:56:22,570 INFO L85 PathProgramCache]: Analyzing trace with hash 32956701, now seen corresponding path program 3 times [2023-11-17 14:56:22,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:56:22,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063610401] [2023-11-17 14:56:22,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:56:22,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:56:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:56:22,866 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 14:56:22,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:56:22,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063610401] [2023-11-17 14:56:22,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063610401] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 14:56:22,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381894978] [2023-11-17 14:56:22,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 14:56:22,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 14:56:22,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 14:56:22,881 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 14:56:22,931 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 14:56:22,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-17 14:56:22,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 14:56:22,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 14:56:22,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 14:56:23,015 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 14:56:23,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 14:56:23,094 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 14:56:23,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381894978] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 14:56:23,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 14:56:23,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2023-11-17 14:56:23,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283188133] [2023-11-17 14:56:23,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 14:56:23,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 14:56:23,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:56:23,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 14:56:23,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2023-11-17 14:56:23,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 192 [2023-11-17 14:56:23,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 146 flow. Second operand has 15 states, 15 states have (on average 85.4) internal successors, (1281), 15 states have internal predecessors, (1281), 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 14:56:23,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:56:23,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 192 [2023-11-17 14:56:23,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:56:23,221 INFO L124 PetriNetUnfolderBase]: 277/419 cut-off events. [2023-11-17 14:56:23,221 INFO L125 PetriNetUnfolderBase]: For 963/963 co-relation queries the response was YES. [2023-11-17 14:56:23,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 419 events. 277/419 cut-off events. For 963/963 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 980 event pairs, 20 based on Foata normal form. 18/345 useless extension candidates. Maximal degree in co-relation 1308. Up to 100 conditions per place. [2023-11-17 14:56:23,223 INFO L140 encePairwiseOnDemand]: 189/192 looper letters, 84 selfloop transitions, 13 changer transitions 0/97 dead transitions. [2023-11-17 14:56:23,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 97 transitions, 500 flow [2023-11-17 14:56:23,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 14:56:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 14:56:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1275 transitions. [2023-11-17 14:56:23,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47433035714285715 [2023-11-17 14:56:23,227 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1275 transitions. [2023-11-17 14:56:23,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1275 transitions. [2023-11-17 14:56:23,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:56:23,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1275 transitions. [2023-11-17 14:56:23,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 91.07142857142857) internal successors, (1275), 14 states have internal predecessors, (1275), 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 14:56:23,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 192.0) internal successors, (2880), 15 states have internal predecessors, (2880), 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 14:56:23,238 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 192.0) internal successors, (2880), 15 states have internal predecessors, (2880), 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 14:56:23,238 INFO L175 Difference]: Start difference. First operand has 41 places, 23 transitions, 146 flow. Second operand 14 states and 1275 transitions. [2023-11-17 14:56:23,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 97 transitions, 500 flow [2023-11-17 14:56:23,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 97 transitions, 448 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-11-17 14:56:23,245 INFO L231 Difference]: Finished difference. Result has 51 places, 25 transitions, 146 flow [2023-11-17 14:56:23,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=146, PETRI_PLACES=51, PETRI_TRANSITIONS=25} [2023-11-17 14:56:23,246 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 33 predicate places. [2023-11-17 14:56:23,247 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 25 transitions, 146 flow [2023-11-17 14:56:23,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 85.4) internal successors, (1281), 15 states have internal predecessors, (1281), 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 14:56:23,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:56:23,248 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 1, 1, 1, 1, 1, 1] [2023-11-17 14:56:23,262 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 14:56:23,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 14:56:23,453 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 14:56:23,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:56:23,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1606619517, now seen corresponding path program 4 times [2023-11-17 14:56:23,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:56:23,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712911209] [2023-11-17 14:56:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:56:23,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:56:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:56:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:56:24,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:56:24,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712911209] [2023-11-17 14:56:24,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712911209] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 14:56:24,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497184520] [2023-11-17 14:56:24,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 14:56:24,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 14:56:24,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 14:56:24,017 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 14:56:24,064 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 14:56:24,109 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 14:56:24,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 14:56:24,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-17 14:56:24,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 14:56:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:56:24,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 14:56:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:56:25,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497184520] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 14:56:25,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 14:56:25,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2023-11-17 14:56:25,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549729491] [2023-11-17 14:56:25,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 14:56:25,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-17 14:56:25,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:56:25,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-17 14:56:25,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1321, Unknown=0, NotChecked=0, Total=1640 [2023-11-17 14:56:25,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 192 [2023-11-17 14:56:25,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 25 transitions, 146 flow. Second operand has 41 states, 41 states have (on average 78.3170731707317) internal successors, (3211), 41 states have internal predecessors, (3211), 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 14:56:25,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:56:25,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 192 [2023-11-17 14:56:25,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:56:31,060 INFO L124 PetriNetUnfolderBase]: 12971/19464 cut-off events. [2023-11-17 14:56:31,060 INFO L125 PetriNetUnfolderBase]: For 54948/54948 co-relation queries the response was YES. [2023-11-17 14:56:31,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61138 conditions, 19464 events. 12971/19464 cut-off events. For 54948/54948 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 120194 event pairs, 63 based on Foata normal form. 113/14727 useless extension candidates. Maximal degree in co-relation 61114. Up to 4060 conditions per place. [2023-11-17 14:56:31,173 INFO L140 encePairwiseOnDemand]: 187/192 looper letters, 529 selfloop transitions, 925 changer transitions 0/1454 dead transitions. [2023-11-17 14:56:31,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 1454 transitions, 11283 flow [2023-11-17 14:56:31,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-11-17 14:56:31,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2023-11-17 14:56:31,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 9007 transitions. [2023-11-17 14:56:31,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44256092767295596 [2023-11-17 14:56:31,189 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 9007 transitions. [2023-11-17 14:56:31,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 9007 transitions. [2023-11-17 14:56:31,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:56:31,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 9007 transitions. [2023-11-17 14:56:31,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 84.97169811320755) internal successors, (9007), 106 states have internal predecessors, (9007), 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 14:56:31,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 192.0) internal successors, (20544), 107 states have internal predecessors, (20544), 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 14:56:31,228 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 192.0) internal successors, (20544), 107 states have internal predecessors, (20544), 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 14:56:31,228 INFO L175 Difference]: Start difference. First operand has 51 places, 25 transitions, 146 flow. Second operand 106 states and 9007 transitions. [2023-11-17 14:56:31,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 1454 transitions, 11283 flow [2023-11-17 14:56:31,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 1454 transitions, 9145 flow, removed 597 selfloop flow, removed 11 redundant places. [2023-11-17 14:56:31,529 INFO L231 Difference]: Finished difference. Result has 161 places, 950 transitions, 5765 flow [2023-11-17 14:56:31,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=5765, PETRI_PLACES=161, PETRI_TRANSITIONS=950} [2023-11-17 14:56:31,530 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 143 predicate places. [2023-11-17 14:56:31,530 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 950 transitions, 5765 flow [2023-11-17 14:56:31,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 78.3170731707317) internal successors, (3211), 41 states have internal predecessors, (3211), 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 14:56:31,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:56:31,531 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:56:31,537 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 14:56:31,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 14:56:31,732 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 14:56:31,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:56:31,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1282301993, now seen corresponding path program 1 times [2023-11-17 14:56:31,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:56:31,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091247167] [2023-11-17 14:56:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:56:31,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:56:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:56:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:56:32,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:56:32,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091247167] [2023-11-17 14:56:32,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091247167] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 14:56:32,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595270951] [2023-11-17 14:56:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:56:32,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 14:56:32,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 14:56:32,248 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 14:56:32,251 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 14:56:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:56:32,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-17 14:56:32,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 14:56:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 37 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:56:32,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 14:56:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:56:33,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595270951] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 14:56:33,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 14:56:33,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2023-11-17 14:56:33,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187287420] [2023-11-17 14:56:33,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 14:56:33,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-17 14:56:33,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:56:33,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-17 14:56:33,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2023-11-17 14:56:33,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 192 [2023-11-17 14:56:33,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 950 transitions, 5765 flow. Second operand has 47 states, 47 states have (on average 78.34042553191489) internal successors, (3682), 47 states have internal predecessors, (3682), 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 14:56:33,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:56:33,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 192 [2023-11-17 14:56:33,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:24,743 INFO L124 PetriNetUnfolderBase]: 180647/270850 cut-off events. [2023-11-17 14:57:24,743 INFO L125 PetriNetUnfolderBase]: For 6127359/6127359 co-relation queries the response was YES. [2023-11-17 14:57:26,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127796 conditions, 270850 events. 180647/270850 cut-off events. For 6127359/6127359 co-relation queries the response was YES. Maximal size of possible extension queue 12524. Compared 2405977 event pairs, 3593 based on Foata normal form. 4316/275166 useless extension candidates. Maximal degree in co-relation 1127756. Up to 51905 conditions per place. [2023-11-17 14:57:27,375 INFO L140 encePairwiseOnDemand]: 187/192 looper letters, 1865 selfloop transitions, 25312 changer transitions 0/27177 dead transitions. [2023-11-17 14:57:27,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 27177 transitions, 212206 flow [2023-11-17 14:57:27,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2023-11-17 14:57:27,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2023-11-17 14:57:27,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 20657 transitions. [2023-11-17 14:57:27,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43735179539295393 [2023-11-17 14:57:27,398 INFO L72 ComplementDD]: Start complementDD. Operand 246 states and 20657 transitions. [2023-11-17 14:57:27,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 246 states and 20657 transitions. [2023-11-17 14:57:27,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:27,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 246 states and 20657 transitions. [2023-11-17 14:57:27,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 247 states, 246 states have (on average 83.97154471544715) internal successors, (20657), 246 states have internal predecessors, (20657), 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 14:57:27,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 247 states, 247 states have (on average 192.0) internal successors, (47424), 247 states have internal predecessors, (47424), 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 14:57:27,496 INFO L81 ComplementDD]: Finished complementDD. Result has 247 states, 247 states have (on average 192.0) internal successors, (47424), 247 states have internal predecessors, (47424), 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 14:57:27,497 INFO L175 Difference]: Start difference. First operand has 161 places, 950 transitions, 5765 flow. Second operand 246 states and 20657 transitions. [2023-11-17 14:57:27,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 27177 transitions, 212206 flow Received shutdown request... [2023-11-17 15:05:49,291 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 15:05:49,317 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 15:05:49,763 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 15:05:49,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-17 15:05:49,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:05:49,969 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-11-17 15:05:49,970 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 15:05:49,970 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 15:05:49,970 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-11-17 15:05:49,972 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:05:49,973 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:05:49,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:05:49 BasicIcfg [2023-11-17 15:05:49,974 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:05:49,975 INFO L158 Benchmark]: Toolchain (without parser) took 571812.22ms. Allocated memory was 283.1MB in the beginning and 7.4GB in the end (delta: 7.1GB). Free memory was 228.2MB in the beginning and 1.6GB in the end (delta: -1.3GB). Peak memory consumption was 6.6GB. Max. memory is 8.0GB. [2023-11-17 15:05:49,975 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 229.6MB. Free memory is still 180.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:05:49,975 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.08ms. Allocated memory is still 283.1MB. Free memory was 228.0MB in the beginning and 208.7MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-11-17 15:05:49,975 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.74ms. Allocated memory is still 283.1MB. Free memory was 208.7MB in the beginning and 206.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:05:49,975 INFO L158 Benchmark]: Boogie Preprocessor took 21.79ms. Allocated memory is still 283.1MB. Free memory was 206.7MB in the beginning and 205.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:05:49,976 INFO L158 Benchmark]: RCFGBuilder took 372.05ms. Allocated memory is still 283.1MB. Free memory was 205.2MB in the beginning and 241.3MB in the end (delta: -36.1MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2023-11-17 15:05:49,976 INFO L158 Benchmark]: TraceAbstraction took 571039.33ms. Allocated memory was 283.1MB in the beginning and 7.4GB in the end (delta: 7.1GB). Free memory was 240.8MB in the beginning and 1.6GB in the end (delta: -1.3GB). Peak memory consumption was 6.6GB. Max. memory is 8.0GB. [2023-11-17 15:05:49,979 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 229.6MB. Free memory is still 180.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 341.08ms. Allocated memory is still 283.1MB. Free memory was 228.0MB in the beginning and 208.7MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.74ms. Allocated memory is still 283.1MB. Free memory was 208.7MB in the beginning and 206.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.79ms. Allocated memory is still 283.1MB. Free memory was 206.7MB in the beginning and 205.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 372.05ms. Allocated memory is still 283.1MB. Free memory was 205.2MB in the beginning and 241.3MB in the end (delta: -36.1MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. * TraceAbstraction took 571039.33ms. Allocated memory was 283.1MB in the beginning and 7.4GB in the end (delta: 7.1GB). Free memory was 240.8MB in the beginning and 1.6GB in the end (delta: -1.3GB). Peak memory consumption was 6.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 95 PlacesBefore, 18 PlacesAfterwards, 95 TransitionsBefore, 14 TransitionsAfterwards, 2134 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 95 TotalNumberOfCompositions, 1542 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1472, independent: 1465, independent conditional: 0, independent unconditional: 1465, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1360, independent: 1355, independent conditional: 0, independent unconditional: 1355, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1360, independent: 1355, independent conditional: 0, independent unconditional: 1355, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1472, independent: 110, independent conditional: 0, independent unconditional: 110, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 1360, unknown conditional: 0, unknown unconditional: 1360] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 681]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 721]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 720]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 113 locations, 3 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: 570.9s, OverallIterations: 6, TraceHistogramMax: 12, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 563.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3012 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3012 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 728 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5370 IncrementalHoareTripleChecker+Invalid, 6098 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 728 mSolverCounterUnsat, 0 mSDtfsCounter, 5370 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 501 GetRequests, 61 SyntacticMatches, 10 SemanticMatches, 430 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38122 ImplicationChecksByTransitivity, 18.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5765occurred in iteration=5, InterpolantAutomatonStates: 141, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 206 ConstructedInterpolants, 0 QuantifiedInterpolants, 1953 SizeOfPredicates, 22 NumberOfNonLiveVariables, 947 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 92/669 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