/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-MCRwithDepranks-Lazy-NoForkJoinOpt-wrwc.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/nested_fork.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-16 05:46:28,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-16 05:46:28,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-16 05:46:28,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-16 05:46:28,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-16 05:46:28,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-16 05:46:28,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-16 05:46:28,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-16 05:46:28,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-16 05:46:28,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-16 05:46:28,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-16 05:46:28,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-16 05:46:28,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-16 05:46:28,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-16 05:46:28,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-16 05:46:28,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-16 05:46:28,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-16 05:46:28,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-16 05:46:28,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-16 05:46:28,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-16 05:46:28,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-16 05:46:28,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-16 05:46:28,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-16 05:46:28,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-16 05:46:28,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-16 05:46:28,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-16 05:46:28,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-16 05:46:28,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-16 05:46:28,642 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-MCRwithDepranks-Lazy-NoForkJoinOpt-wrwc.epf [2022-03-16 05:46:28,666 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-16 05:46:28,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-16 05:46:28,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-16 05:46:28,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-16 05:46:28,667 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-16 05:46:28,667 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-16 05:46:28,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-16 05:46:28,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-16 05:46:28,668 INFO L138 SettingsManager]: * Use SBE=true [2022-03-16 05:46:28,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-16 05:46:28,669 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-16 05:46:28,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-16 05:46:28,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-16 05:46:28,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-16 05:46:28,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-16 05:46:28,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-16 05:46:28,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-16 05:46:28,670 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-16 05:46:28,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-16 05:46:28,670 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-16 05:46:28,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-16 05:46:28,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-16 05:46:28,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-16 05:46:28,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-16 05:46:28,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-16 05:46:28,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 05:46:28,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-16 05:46:28,671 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-16 05:46:28,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-16 05:46:28,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-16 05:46:28,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-16 05:46:28,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-16 05:46:28,672 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-16 05:46:28,672 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-16 05:46:28,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-16 05:46:28,672 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-16 05:46:28,672 INFO L138 SettingsManager]: * MCR: Overapproximate write-read-write conflicts=false [2022-03-16 05:46:28,672 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-16 05:46:28,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-16 05:46:28,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-16 05:46:28,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-16 05:46:28,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-16 05:46:28,868 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-16 05:46:28,871 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-16 05:46:28,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/nested_fork.bpl [2022-03-16 05:46:28,873 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/nested_fork.bpl' [2022-03-16 05:46:28,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-16 05:46:28,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-16 05:46:28,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-16 05:46:28,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-16 05:46:28,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-16 05:46:28,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:28" (1/1) ... [2022-03-16 05:46:28,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:28" (1/1) ... [2022-03-16 05:46:28,908 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-16 05:46:28,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-16 05:46:28,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-16 05:46:28,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-16 05:46:28,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-16 05:46:28,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:28" (1/1) ... [2022-03-16 05:46:28,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:28" (1/1) ... [2022-03-16 05:46:28,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:28" (1/1) ... [2022-03-16 05:46:28,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:28" (1/1) ... [2022-03-16 05:46:28,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:28" (1/1) ... [2022-03-16 05:46:28,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:28" (1/1) ... [2022-03-16 05:46:28,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:28" (1/1) ... [2022-03-16 05:46:28,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-16 05:46:28,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-16 05:46:28,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-16 05:46:28,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-16 05:46:28,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:28" (1/1) ... [2022-03-16 05:46:28,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 05:46:28,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:46:28,950 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) [2022-03-16 05:46:28,969 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 [2022-03-16 05:46:28,985 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-16 05:46:28,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-16 05:46:28,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-16 05:46:28,985 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-16 05:46:28,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-16 05:46:28,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-16 05:46:28,986 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-16 05:46:28,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-16 05:46:28,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-16 05:46:28,986 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-16 05:46:29,006 INFO L234 CfgBuilder]: Building ICFG [2022-03-16 05:46:29,008 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-16 05:46:29,056 INFO L275 CfgBuilder]: Performing block encoding [2022-03-16 05:46:29,060 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-16 05:46:29,060 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-16 05:46:29,061 INFO L202 PluginConnector]: Adding new model nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 05:46:29 BoogieIcfgContainer [2022-03-16 05:46:29,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-16 05:46:29,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-16 05:46:29,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-16 05:46:29,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-16 05:46:29,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:28" (1/2) ... [2022-03-16 05:46:29,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253238b4 and model type nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 05:46:29, skipping insertion in model container [2022-03-16 05:46:29,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 05:46:29" (2/2) ... [2022-03-16 05:46:29,067 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_fork.bpl [2022-03-16 05:46:29,071 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-16 05:46:29,071 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-16 05:46:29,071 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-16 05:46:29,071 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-16 05:46:29,101 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-03-16 05:46:29,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 05:46:29,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:46:29,155 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) [2022-03-16 05:46:29,170 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 [2022-03-16 05:46:29,187 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 05:46:29,198 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=false, mMcrOverapproximateWrwc=false [2022-03-16 05:46:29,198 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-16 05:46:29,244 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 8 transitions and produced 9 states. [2022-03-16 05:46:29,261 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, thread1Thread1of1ForFork1Err0INUSE_VIOLATION] === [2022-03-16 05:46:29,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:46:29,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1046076718, now seen corresponding path program 1 times [2022-03-16 05:46:29,273 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:46:29,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59131706] [2022-03-16 05:46:29,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:46:29,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:46:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-16 05:46:29,336 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-16 05:46:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-16 05:46:29,359 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-16 05:46:29,361 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-16 05:46:29,362 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-03-16 05:46:29,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2INUSE_VIOLATION (2 of 4 remaining) [2022-03-16 05:46:29,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-16 05:46:29,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Thread1of1ForFork1Err0INUSE_VIOLATION (0 of 4 remaining) [2022-03-16 05:46:29,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-16 05:46:29,372 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-03-16 05:46:29,376 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-16 05:46:29,376 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-16 05:46:29,383 INFO L202 PluginConnector]: Adding new model nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 05:46:29 BasicIcfg [2022-03-16 05:46:29,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-16 05:46:29,384 INFO L158 Benchmark]: Toolchain (without parser) took 494.79ms. Allocated memory is still 194.0MB. Free memory was 153.8MB in the beginning and 160.0MB in the end (delta: -6.2MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-16 05:46:29,385 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.29ms. Allocated memory is still 194.0MB. Free memory is still 154.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-16 05:46:29,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.99ms. Allocated memory is still 194.0MB. Free memory was 153.7MB in the beginning and 152.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-16 05:46:29,388 INFO L158 Benchmark]: Boogie Preprocessor took 8.85ms. Allocated memory is still 194.0MB. Free memory was 152.2MB in the beginning and 151.4MB in the end (delta: 816.5kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-16 05:46:29,389 INFO L158 Benchmark]: RCFGBuilder took 141.24ms. Allocated memory is still 194.0MB. Free memory was 151.3MB in the beginning and 144.1MB in the end (delta: 7.1MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-16 05:46:29,389 INFO L158 Benchmark]: TraceAbstraction took 320.04ms. Allocated memory is still 194.0MB. Free memory was 143.6MB in the beginning and 160.0MB in the end (delta: -16.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-16 05:46:29,392 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 0.29ms. Allocated memory is still 194.0MB. Free memory is still 154.7MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.99ms. Allocated memory is still 194.0MB. Free memory was 153.7MB in the beginning and 152.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 8.85ms. Allocated memory is still 194.0MB. Free memory was 152.2MB in the beginning and 151.4MB in the end (delta: 816.5kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 141.24ms. Allocated memory is still 194.0MB. Free memory was 151.3MB in the beginning and 144.1MB in the end (delta: 7.1MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 320.04ms. Allocated memory is still 194.0MB. Free memory was 143.6MB in the beginning and 160.0MB in the end (delta: -16.5MB). 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: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - 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: 17]: assertion can be violated assertion can be violated We found a FailurePath: [L14] FORK 0 fork 1 thread1(); [L21] FORK 1 fork 2, 2 thread2(); [L22] JOIN 2 join 2, 2; [L16] JOIN 1 join 1; [L17] 0 assert false; - UnprovableResult [Line: 20]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 21 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, 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: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2022-03-16 05:46:29,422 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 [2022-03-16 05:46:29,632 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...