/usr/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-POR-NewStatesSleepPersistentFixedOrder-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-19 03:27:26,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-19 03:27:26,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-19 03:27:26,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-19 03:27:26,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-19 03:27:26,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-19 03:27:26,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-19 03:27:26,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-19 03:27:26,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-19 03:27:26,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-19 03:27:26,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-19 03:27:26,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-19 03:27:26,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-19 03:27:26,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-19 03:27:26,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-19 03:27:26,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-19 03:27:26,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-19 03:27:26,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-19 03:27:26,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-19 03:27:26,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-19 03:27:26,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-19 03:27:26,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-19 03:27:26,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-19 03:27:26,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-19 03:27:26,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-19 03:27:26,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-19 03:27:26,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-19 03:27:26,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-19 03:27:26,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-19 03:27:26,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-19 03:27:26,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-19 03:27:26,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-19 03:27:26,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-19 03:27:26,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-19 03:27:26,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-19 03:27:26,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-19 03:27:26,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-19 03:27:26,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-19 03:27:26,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-19 03:27:26,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-19 03:27:26,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-19 03:27:26,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe.epf [2022-02-19 03:27:26,434 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-19 03:27:26,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-19 03:27:26,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-19 03:27:26,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-19 03:27:26,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-19 03:27:26,436 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-19 03:27:26,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-19 03:27:26,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-19 03:27:26,436 INFO L138 SettingsManager]: * Use SBE=true [2022-02-19 03:27:26,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-19 03:27:26,437 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-19 03:27:26,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-19 03:27:26,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-19 03:27:26,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-19 03:27:26,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-19 03:27:26,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-19 03:27:26,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-19 03:27:26,438 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-19 03:27:26,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-19 03:27:26,439 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-19 03:27:26,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-19 03:27:26,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-19 03:27:26,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-19 03:27:26,439 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-19 03:27:26,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-19 03:27:26,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-19 03:27:26,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-19 03:27:26,441 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-19 03:27:26,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-19 03:27:26,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-19 03:27:26,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-19 03:27:26,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-19 03:27:26,441 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-19 03:27:26,442 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-19 03:27:26,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-19 03:27:26,442 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-02-19 03:27:26,442 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-02-19 03:27:26,442 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-19 03:27:26,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-19 03:27:26,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-19 03:27:26,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-19 03:27:26,712 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-19 03:27:26,714 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-19 03:27:26,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl [2022-02-19 03:27:26,715 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl' [2022-02-19 03:27:26,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-19 03:27:26,734 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-19 03:27:26,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-19 03:27:26,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-19 03:27:26,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-19 03:27:26,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:27:26" (1/1) ... [2022-02-19 03:27:26,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:27:26" (1/1) ... [2022-02-19 03:27:26,756 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-19 03:27:26,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-19 03:27:26,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-19 03:27:26,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-19 03:27:26,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-19 03:27:26,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:27:26" (1/1) ... [2022-02-19 03:27:26,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:27:26" (1/1) ... [2022-02-19 03:27:26,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:27:26" (1/1) ... [2022-02-19 03:27:26,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:27:26" (1/1) ... [2022-02-19 03:27:26,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:27:26" (1/1) ... [2022-02-19 03:27:26,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:27:26" (1/1) ... [2022-02-19 03:27:26,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:27:26" (1/1) ... [2022-02-19 03:27:26,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-19 03:27:26,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-19 03:27:26,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-19 03:27:26,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-19 03:27:26,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:27:26" (1/1) ... [2022-02-19 03:27:26,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-19 03:27:26,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:27:26,813 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) [2022-02-19 03:27:26,825 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 [2022-02-19 03:27:26,856 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process0 given in one single declaration [2022-02-19 03:27:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure Process0 [2022-02-19 03:27:26,857 INFO L138 BoogieDeclarations]: Found implementation of procedure Process0 [2022-02-19 03:27:26,857 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2022-02-19 03:27:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2022-02-19 03:27:26,857 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2022-02-19 03:27:26,858 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-19 03:27:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-19 03:27:26,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-19 03:27:26,859 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-19 03:27:26,906 INFO L234 CfgBuilder]: Building ICFG [2022-02-19 03:27:26,908 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-19 03:27:27,004 INFO L275 CfgBuilder]: Performing block encoding [2022-02-19 03:27:27,014 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-19 03:27:27,017 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-19 03:27:27,019 INFO L202 PluginConnector]: Adding new model PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:27:27 BoogieIcfgContainer [2022-02-19 03:27:27,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-19 03:27:27,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-19 03:27:27,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-19 03:27:27,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-19 03:27:27,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:27:26" (1/2) ... [2022-02-19 03:27:27,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d609cb and model type PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 03:27:27, skipping insertion in model container [2022-02-19 03:27:27,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:27:27" (2/2) ... [2022-02-19 03:27:27,031 INFO L111 eAbstractionObserver]: Analyzing ICFG PetersonWithBug.bpl [2022-02-19 03:27:27,041 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-19 03:27:27,042 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-19 03:27:27,042 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-19 03:27:27,042 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-19 03:27:27,090 WARN L322 ript$VariableManager]: TermVariabe Process0Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 03:27:27,090 WARN L322 ript$VariableManager]: TermVariabe Process0Thread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 03:27:27,092 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 03:27:27,092 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-19 03:27:27,092 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-19 03:27:27,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-19 03:27:27,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:27:27,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-19 03:27:27,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-19 03:27:27,199 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-02-19 03:27:27,207 INFO L339 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-02-19 03:27:27,207 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-19 03:27:27,350 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2022-02-19 03:27:27,351 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 2 remaining) [2022-02-19 03:27:27,367 INFO L732 BasicCegarLoop]: Path program histogram: [] [2022-02-19 03:27:27,368 INFO L309 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE,SAFE (1/3) [2022-02-19 03:27:27,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-19 03:27:27,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:27:27,385 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-19 03:27:27,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2022-02-19 03:27:27,390 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == Process1Thread1of1ForFork1 ======== [2022-02-19 03:27:27,392 INFO L339 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-02-19 03:27:27,392 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-19 03:27:27,450 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting Process1Err0ASSERT_VIOLATIONASSERT === [Process1Err0ASSERT_VIOLATIONASSERT] === [2022-02-19 03:27:27,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:27:27,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1805572939, now seen corresponding path program 1 times [2022-02-19 03:27:27,463 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:27:27,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199106004] [2022-02-19 03:27:27,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:27:27,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:27:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:27:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:27:27,571 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 03:27:27,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199106004] [2022-02-19 03:27:27,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199106004] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-19 03:27:27,572 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-19 03:27:27,572 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-19 03:27:27,574 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704244983] [2022-02-19 03:27:27,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-19 03:27:27,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-19 03:27:27,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 03:27:27,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-19 03:27:27,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-19 03:27:27,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:27:27,606 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 03:27:27,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-02-19 03:27:27,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:27:27,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 03:27:27,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-19 03:27:27,675 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting Process1Err0ASSERT_VIOLATIONASSERT === [Process1Err0ASSERT_VIOLATIONASSERT] === [2022-02-19 03:27:27,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:27:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash 579567833, now seen corresponding path program 1 times [2022-02-19 03:27:27,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:27:27,677 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328398117] [2022-02-19 03:27:27,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:27:27,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:27:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:27:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:27:27,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 03:27:27,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328398117] [2022-02-19 03:27:27,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328398117] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-19 03:27:27,779 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-19 03:27:27,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-19 03:27:27,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831972374] [2022-02-19 03:27:27,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-19 03:27:27,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-19 03:27:27,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 03:27:27,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-19 03:27:27,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-19 03:27:27,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:27:27,781 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 03:27:27,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-02-19 03:27:27,781 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 03:27:27,781 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:27:27,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 03:27:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:27:27,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-19 03:27:27,874 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting Process1Err0ASSERT_VIOLATIONASSERT === [Process1Err0ASSERT_VIOLATIONASSERT] === [2022-02-19 03:27:27,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:27:27,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1532417930, now seen corresponding path program 1 times [2022-02-19 03:27:27,875 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:27:27,875 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400348769] [2022-02-19 03:27:27,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:27:27,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:27:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-19 03:27:27,886 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-19 03:27:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-19 03:27:27,910 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-19 03:27:27,910 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-19 03:27:27,910 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location Process1Err0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-02-19 03:27:27,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-19 03:27:27,913 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-19 03:27:27,913 INFO L309 ceAbstractionStarter]: Result for error location Process1Thread1of1ForFork1 was UNSAFE (2/3) [2022-02-19 03:27:27,915 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-19 03:27:27,916 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-19 03:27:27,928 INFO L202 PluginConnector]: Adding new model PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 03:27:27 BasicIcfg [2022-02-19 03:27:27,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-19 03:27:27,929 INFO L158 Benchmark]: Toolchain (without parser) took 1195.48ms. Allocated memory was 182.5MB in the beginning and 253.8MB in the end (delta: 71.3MB). Free memory was 141.2MB in the beginning and 213.3MB in the end (delta: -72.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-19 03:27:27,930 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 182.5MB. Free memory is still 142.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-19 03:27:27,930 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.32ms. Allocated memory is still 182.5MB. Free memory was 141.0MB in the beginning and 139.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-19 03:27:27,930 INFO L158 Benchmark]: Boogie Preprocessor took 19.29ms. Allocated memory is still 182.5MB. Free memory was 139.5MB in the beginning and 138.6MB in the end (delta: 905.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-19 03:27:27,931 INFO L158 Benchmark]: RCFGBuilder took 238.92ms. Allocated memory is still 182.5MB. Free memory was 138.5MB in the beginning and 130.5MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-19 03:27:27,931 INFO L158 Benchmark]: TraceAbstraction took 907.79ms. Allocated memory was 182.5MB in the beginning and 253.8MB in the end (delta: 71.3MB). Free memory was 130.0MB in the beginning and 213.3MB in the end (delta: -83.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-19 03:27:27,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13ms. Allocated memory is still 182.5MB. Free memory is still 142.2MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.32ms. Allocated memory is still 182.5MB. Free memory was 141.0MB in the beginning and 139.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.29ms. Allocated memory is still 182.5MB. Free memory was 139.5MB in the beginning and 138.6MB in the end (delta: 905.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 238.92ms. Allocated memory is still 182.5MB. Free memory was 138.5MB in the beginning and 130.5MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 907.79ms. Allocated memory was 182.5MB in the beginning and 253.8MB in the end (delta: 71.3MB). Free memory was 130.0MB in the beginning and 213.3MB in the end (delta: -83.3MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 95, positive: 92, positive conditional: 2, positive unconditional: 90, negative: 3, negative conditional: 1, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 94, positive: 92, positive conditional: 2, positive unconditional: 90, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 94, positive: 92, positive conditional: 2, positive unconditional: 90, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 94, positive: 92, positive conditional: 0, positive unconditional: 92, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 94, positive: 92, positive conditional: 0, positive unconditional: 92, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 94, positive: 92, positive conditional: 0, positive unconditional: 92, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 92, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 92, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 62, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 94, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 92, unknown conditional: 0, unknown unconditional: 92] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 90, Positive conditional cache size: 0, Positive unconditional cache size: 90, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 1 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 3, Number of trivial persistent sets: 2, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 92, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 95, positive: 92, positive conditional: 2, positive unconditional: 90, negative: 3, negative conditional: 1, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 94, positive: 92, positive conditional: 2, positive unconditional: 90, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 94, positive: 92, positive conditional: 2, positive unconditional: 90, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 94, positive: 92, positive conditional: 0, positive unconditional: 92, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 94, positive: 92, positive conditional: 0, positive unconditional: 92, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 94, positive: 92, positive conditional: 0, positive unconditional: 92, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 92, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 92, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 62, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 94, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 92, unknown conditional: 0, unknown unconditional: 92] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 90, Positive conditional cache size: 0, Positive unconditional cache size: 90, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 1 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 609, positive: 539, positive conditional: 212, positive unconditional: 327, negative: 70, negative conditional: 50, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 575, positive: 539, positive conditional: 212, positive unconditional: 327, negative: 36, negative conditional: 16, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 575, positive: 539, positive conditional: 212, positive unconditional: 327, negative: 36, negative conditional: 16, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 599, positive: 539, positive conditional: 177, positive unconditional: 362, negative: 60, negative conditional: 24, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 599, positive: 539, positive conditional: 32, positive unconditional: 507, negative: 60, negative conditional: 4, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 599, positive: 539, positive conditional: 32, positive unconditional: 507, negative: 60, negative conditional: 4, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 309, positive: 286, positive conditional: 1, positive unconditional: 285, negative: 23, negative conditional: 3, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 309, positive: 268, positive conditional: 0, positive unconditional: 268, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 41, positive: 18, positive conditional: 1, positive unconditional: 17, negative: 23, negative conditional: 3, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 85, positive: 27, positive conditional: 1, positive unconditional: 26, negative: 58, negative conditional: 6, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 599, positive: 253, positive conditional: 31, positive unconditional: 222, negative: 37, negative conditional: 1, negative unconditional: 36, unknown: 309, unknown conditional: 4, unknown unconditional: 305] , Statistics on independence cache: Total cache size (in pairs): 309, Positive cache size: 286, Positive conditional cache size: 1, Positive unconditional cache size: 285, Negative cache size: 23, Negative conditional cache size: 3, Negative unconditional cache size: 20, Eliminated conditions: 165, Maximal queried relation: 2, Independence queries for same thread: 34 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 85, Number of trivial persistent sets: 75, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 347, positive: 327, positive conditional: 0, positive unconditional: 327, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 609, positive: 539, positive conditional: 212, positive unconditional: 327, negative: 70, negative conditional: 50, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 575, positive: 539, positive conditional: 212, positive unconditional: 327, negative: 36, negative conditional: 16, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 575, positive: 539, positive conditional: 212, positive unconditional: 327, negative: 36, negative conditional: 16, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 599, positive: 539, positive conditional: 177, positive unconditional: 362, negative: 60, negative conditional: 24, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 599, positive: 539, positive conditional: 32, positive unconditional: 507, negative: 60, negative conditional: 4, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 599, positive: 539, positive conditional: 32, positive unconditional: 507, negative: 60, negative conditional: 4, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 309, positive: 286, positive conditional: 1, positive unconditional: 285, negative: 23, negative conditional: 3, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 309, positive: 268, positive conditional: 0, positive unconditional: 268, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 41, positive: 18, positive conditional: 1, positive unconditional: 17, negative: 23, negative conditional: 3, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 85, positive: 27, positive conditional: 1, positive unconditional: 26, negative: 58, negative conditional: 6, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 599, positive: 253, positive conditional: 31, positive unconditional: 222, negative: 37, negative conditional: 1, negative unconditional: 36, unknown: 309, unknown conditional: 4, unknown unconditional: 305] , Statistics on independence cache: Total cache size (in pairs): 309, Positive cache size: 286, Positive conditional cache size: 1, Positive unconditional cache size: 285, Negative cache size: 23, Negative conditional cache size: 3, Negative unconditional cache size: 20, Eliminated conditions: 165, Maximal queried relation: 2, Independence queries for same thread: 34 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 59]: assertion can be violated assertion can be violated We found a FailurePath: [L25] 0 critical := 0; VAL [critical=0] [L26] FORK 0 fork 0 Process0(); VAL [critical=0] [L37] 1 turn := 1; VAL [critical=0, turn=1] [L38] 1 flag0 := 1; VAL [critical=0, flag0=1, turn=1] [L27] FORK 0 fork 1 Process1(); VAL [critical=0, flag0=1, turn=1] [L56] 2 flag1 := 1; VAL [critical=0, flag0=1, flag1=1, turn=1] [L57] 2 turn := 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L39] 1 assume flag1 == 0 || turn == 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L40] 1 assert critical == 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L41] 1 critical := 1; VAL [critical=1, flag0=1, flag1=1, turn=0] [L42] 1 critical := 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L43] 1 flag0 := 0; VAL [critical=0, flag0=0, flag1=1, turn=0] [L58] 2 assume flag0 == 0 || turn == 1; VAL [critical=0, flag0=0, flag1=1, turn=0] [L59] 2 assert critical == 0; VAL [critical=0, flag0=0, flag1=1, turn=0] [L60] 2 critical := 1; VAL [critical=1, flag0=0, flag1=1, turn=0] [L61] 2 critical := 0; VAL [critical=0, flag0=0, flag1=1, turn=0] [L62] 2 flag1 := 0; VAL [critical=0, flag0=0, flag1=0, turn=0] [L56] 2 flag1 := 1; VAL [critical=0, flag0=0, flag1=1, turn=0] [L37] 1 turn := 1; VAL [critical=0, flag0=0, flag1=1, turn=1] [L57] 2 turn := 0; VAL [critical=0, flag0=0, flag1=1, turn=0] [L58] 2 assume flag0 == 0 || turn == 1; VAL [critical=0, flag0=0, flag1=1, turn=0] [L38] 1 flag0 := 1; VAL [critical=0, flag0=1, flag1=1, turn=0] [L39] 1 assume flag1 == 0 || turn == 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L40] 1 assert critical == 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L41] 1 critical := 1; VAL [critical=1, flag0=1, flag1=1, turn=0] [L59] 2 assert critical == 0; VAL [critical=1, flag0=1, flag1=1, turn=0] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 47 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 0, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, 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: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: Process1Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 47 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 RESULT: Ultimate proved your program to be incorrect! [2022-02-19 03:27:27,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Ended with exit code 0 [2022-02-19 03:27:28,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-02-19 03:27:28,387 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...