/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/sync01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:15:31,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:15:31,513 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:15:31,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:15:31,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:15:31,546 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:15:31,547 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:15:31,547 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:15:31,548 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:15:31,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:15:31,552 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:15:31,552 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:15:31,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:15:31,554 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:15:31,554 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:15:31,554 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:15:31,554 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:15:31,554 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:15:31,555 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:15:31,555 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:15:31,555 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:15:31,556 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:15:31,556 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:15:31,556 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:15:31,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:15:31,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:15:31,557 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:15:31,557 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:15:31,557 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:15:31,557 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:15:31,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:15:31,558 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:15:31,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:15:31,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:15:31,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:15:31,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:15:31,786 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:15:31,787 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:15:31,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sync01.i [2023-11-17 11:15:32,961 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:15:33,212 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:15:33,212 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i [2023-11-17 11:15:33,230 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9039eb1d/2d271d2d5b3b4fc8bad199186cd69e07/FLAGf35c8e44e [2023-11-17 11:15:33,245 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9039eb1d/2d271d2d5b3b4fc8bad199186cd69e07 [2023-11-17 11:15:33,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:15:33,249 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:15:33,250 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:15:33,250 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:15:33,254 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:15:33,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:15:33" (1/1) ... [2023-11-17 11:15:33,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26cb0483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:33, skipping insertion in model container [2023-11-17 11:15:33,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:15:33" (1/1) ... [2023-11-17 11:15:33,298 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:15:33,686 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/sync01.i[42004,42017] [2023-11-17 11:15:33,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:15:33,712 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:15:33,746 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/sync01.i[42004,42017] [2023-11-17 11:15:33,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:15:33,817 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:15:33,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:33 WrapperNode [2023-11-17 11:15:33,820 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:15:33,821 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:15:33,821 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:15:33,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:15:33,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:33" (1/1) ... [2023-11-17 11:15:33,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:33" (1/1) ... [2023-11-17 11:15:33,877 INFO L138 Inliner]: procedures = 269, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 72 [2023-11-17 11:15:33,877 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:15:33,878 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:15:33,878 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:15:33,878 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:15:33,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:33" (1/1) ... [2023-11-17 11:15:33,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:33" (1/1) ... [2023-11-17 11:15:33,889 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:33" (1/1) ... [2023-11-17 11:15:33,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:33" (1/1) ... [2023-11-17 11:15:33,893 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:33" (1/1) ... [2023-11-17 11:15:33,896 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:33" (1/1) ... [2023-11-17 11:15:33,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:33" (1/1) ... [2023-11-17 11:15:33,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:33" (1/1) ... [2023-11-17 11:15:33,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:15:33,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:15:33,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:15:33,902 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:15:33,903 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:33" (1/1) ... [2023-11-17 11:15:33,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:15:33,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:15:33,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 11:15:33,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 11:15:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:15:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:15:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 11:15:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:15:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 11:15:33,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 11:15:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 11:15:33,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 11:15:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:15:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 11:15:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:15:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:15:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:15:33,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:15:33,956 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:15:34,068 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:15:34,070 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:15:34,233 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:15:34,400 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:15:34,401 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 11:15:34,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:15:34 BoogieIcfgContainer [2023-11-17 11:15:34,403 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:15:34,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:15:34,406 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:15:34,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:15:34,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:15:33" (1/3) ... [2023-11-17 11:15:34,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4c34c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:15:34, skipping insertion in model container [2023-11-17 11:15:34,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:33" (2/3) ... [2023-11-17 11:15:34,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4c34c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:15:34, skipping insertion in model container [2023-11-17 11:15:34,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:15:34" (3/3) ... [2023-11-17 11:15:34,410 INFO L112 eAbstractionObserver]: Analyzing ICFG sync01.i [2023-11-17 11:15:34,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:15:34,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:15:34,423 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:15:34,474 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 11:15:34,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 36 transitions, 86 flow [2023-11-17 11:15:34,567 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2023-11-17 11:15:34,567 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:15:34,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 34 events. 3/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2023-11-17 11:15:34,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 36 transitions, 86 flow [2023-11-17 11:15:34,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 31 transitions, 74 flow [2023-11-17 11:15:34,585 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:15:34,601 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 31 transitions, 74 flow [2023-11-17 11:15:34,605 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 31 transitions, 74 flow [2023-11-17 11:15:34,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 31 transitions, 74 flow [2023-11-17 11:15:34,625 INFO L124 PetriNetUnfolderBase]: 2/31 cut-off events. [2023-11-17 11:15:34,625 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:15:34,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 31 events. 2/31 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2023-11-17 11:15:34,626 INFO L119 LiptonReduction]: Number of co-enabled transitions 320 [2023-11-17 11:15:34,978 INFO L134 LiptonReduction]: Checked pairs total: 713 [2023-11-17 11:15:34,978 INFO L136 LiptonReduction]: Total number of compositions: 10 [2023-11-17 11:15:34,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:15:35,005 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;@1c03100, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:15:35,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 11:15:35,015 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:15:35,016 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2023-11-17 11:15:35,016 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:15:35,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:15:35,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:15:35,017 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 11:15:35,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:15:35,022 INFO L85 PathProgramCache]: Analyzing trace with hash -475497165, now seen corresponding path program 1 times [2023-11-17 11:15:35,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:15:35,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82389771] [2023-11-17 11:15:35,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:15:35,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:15:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:35,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:15:35,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:15:35,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82389771] [2023-11-17 11:15:35,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82389771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:15:35,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:15:35,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:15:35,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711447769] [2023-11-17 11:15:35,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:15:35,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:15:35,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:15:35,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:15:35,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:15:35,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 46 [2023-11-17 11:15:35,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:15:35,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:15:35,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 46 [2023-11-17 11:15:35,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:15:35,511 INFO L124 PetriNetUnfolderBase]: 55/109 cut-off events. [2023-11-17 11:15:35,512 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-17 11:15:35,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 109 events. 55/109 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 254 event pairs, 23 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 208. Up to 73 conditions per place. [2023-11-17 11:15:35,515 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-11-17 11:15:35,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 22 transitions, 100 flow [2023-11-17 11:15:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:15:35,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:15:35,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2023-11-17 11:15:35,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31521739130434784 [2023-11-17 11:15:35,528 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 58 transitions. [2023-11-17 11:15:35,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 58 transitions. [2023-11-17 11:15:35,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:15:35,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 58 transitions. [2023-11-17 11:15:35,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:15:35,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:15:35,539 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:15:35,541 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 4 states and 58 transitions. [2023-11-17 11:15:35,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 22 transitions, 100 flow [2023-11-17 11:15:35,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 22 transitions, 92 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 11:15:35,544 INFO L231 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2023-11-17 11:15:35,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2023-11-17 11:15:35,549 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -4 predicate places. [2023-11-17 11:15:35,549 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2023-11-17 11:15:35,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:15:35,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 11:15:35,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 11:15:35,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 11:15:35,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:15:35,553 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-17 11:15:35,556 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:15:35,556 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:15:35,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:15:35 BasicIcfg [2023-11-17 11:15:35,565 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:15:35,565 INFO L158 Benchmark]: Toolchain (without parser) took 2316.58ms. Allocated memory is still 298.8MB. Free memory was 251.6MB in the beginning and 189.8MB in the end (delta: 61.8MB). Peak memory consumption was 62.2MB. Max. memory is 8.0GB. [2023-11-17 11:15:35,566 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 190.8MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:15:35,566 INFO L158 Benchmark]: CACSL2BoogieTranslator took 570.05ms. Allocated memory is still 298.8MB. Free memory was 251.2MB in the beginning and 222.8MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2023-11-17 11:15:35,567 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.65ms. Allocated memory is still 298.8MB. Free memory was 222.8MB in the beginning and 220.1MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 11:15:35,568 INFO L158 Benchmark]: Boogie Preprocessor took 23.30ms. Allocated memory is still 298.8MB. Free memory was 220.1MB in the beginning and 218.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:15:35,570 INFO L158 Benchmark]: RCFGBuilder took 501.51ms. Allocated memory is still 298.8MB. Free memory was 218.7MB in the beginning and 267.4MB in the end (delta: -48.7MB). Peak memory consumption was 34.9MB. Max. memory is 8.0GB. [2023-11-17 11:15:35,570 INFO L158 Benchmark]: TraceAbstraction took 1158.96ms. Allocated memory is still 298.8MB. Free memory was 266.3MB in the beginning and 189.8MB in the end (delta: 76.5MB). Peak memory consumption was 76.5MB. Max. memory is 8.0GB. [2023-11-17 11:15:35,578 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 190.8MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 570.05ms. Allocated memory is still 298.8MB. Free memory was 251.2MB in the beginning and 222.8MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.65ms. Allocated memory is still 298.8MB. Free memory was 222.8MB in the beginning and 220.1MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.30ms. Allocated memory is still 298.8MB. Free memory was 220.1MB in the beginning and 218.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 501.51ms. Allocated memory is still 298.8MB. Free memory was 218.7MB in the beginning and 267.4MB in the end (delta: -48.7MB). Peak memory consumption was 34.9MB. Max. memory is 8.0GB. * TraceAbstraction took 1158.96ms. Allocated memory is still 298.8MB. Free memory was 266.3MB in the beginning and 189.8MB in the end (delta: 76.5MB). Peak memory consumption was 76.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4s, 36 PlacesBefore, 26 PlacesAfterwards, 31 TransitionsBefore, 21 TransitionsAfterwards, 320 CoEnabledTransitionPairs, 2 FixpointIterations, 2 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 713 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 445, independent: 399, independent conditional: 0, independent unconditional: 399, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 245, independent: 213, independent conditional: 0, independent unconditional: 213, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 245, independent: 201, independent conditional: 0, independent unconditional: 201, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 103, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 445, independent: 186, independent conditional: 0, independent unconditional: 186, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 245, unknown conditional: 0, unknown unconditional: 245] , Statistics on independence cache: Total cache size (in pairs): 82, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 966]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 56 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: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 11:15:35,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...