/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.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 10:25:06,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-16 10:25:06,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-16 10:25:06,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-16 10:25:06,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-16 10:25:06,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-16 10:25:06,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-16 10:25:06,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-16 10:25:06,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-16 10:25:06,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-16 10:25:06,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-16 10:25:06,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-16 10:25:06,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-16 10:25:06,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-16 10:25:06,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-16 10:25:06,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-16 10:25:06,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-16 10:25:06,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-16 10:25:06,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-16 10:25:06,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-16 10:25:06,348 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.epf [2022-03-16 10:25:06,371 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-16 10:25:06,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-16 10:25:06,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-16 10:25:06,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-16 10:25:06,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-16 10:25:06,373 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-16 10:25:06,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-16 10:25:06,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-16 10:25:06,373 INFO L138 SettingsManager]: * Use SBE=true [2022-03-16 10:25:06,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-16 10:25:06,373 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-16 10:25:06,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-16 10:25:06,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-16 10:25:06,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-16 10:25:06,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-16 10:25:06,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-16 10:25:06,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-16 10:25:06,374 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-16 10:25:06,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-16 10:25:06,374 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-16 10:25:06,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-16 10:25:06,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-16 10:25:06,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-16 10:25:06,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-16 10:25:06,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-16 10:25:06,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 10:25:06,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-16 10:25:06,375 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-16 10:25:06,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-16 10:25:06,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-16 10:25:06,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-16 10:25:06,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-16 10:25:06,375 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-16 10:25:06,375 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-16 10:25:06,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-16 10:25:06,375 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-16 10:25:06,375 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-16 10:25:06,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-16 10:25:06,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-16 10:25:06,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-16 10:25:06,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-16 10:25:06,605 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-16 10:25:06,606 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-16 10:25:06,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/nested_fork.bpl [2022-03-16 10:25:06,607 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/nested_fork.bpl' [2022-03-16 10:25:06,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-16 10:25:06,619 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-16 10:25:06,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-16 10:25:06,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-16 10:25:06,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-16 10:25:06,632 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 10:25:06" (1/1) ... [2022-03-16 10:25:06,635 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 10:25:06" (1/1) ... [2022-03-16 10:25:06,639 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-16 10:25:06,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-16 10:25:06,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-16 10:25:06,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-16 10:25:06,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-16 10:25:06,647 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 10:25:06" (1/1) ... [2022-03-16 10:25:06,648 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 10:25:06" (1/1) ... [2022-03-16 10:25:06,648 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 10:25:06" (1/1) ... [2022-03-16 10:25:06,648 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 10:25:06" (1/1) ... [2022-03-16 10:25:06,650 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 10:25:06" (1/1) ... [2022-03-16 10:25:06,651 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 10:25:06" (1/1) ... [2022-03-16 10:25:06,651 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 10:25:06" (1/1) ... [2022-03-16 10:25:06,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-16 10:25:06,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-16 10:25:06,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-16 10:25:06,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-16 10:25:06,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:25:06" (1/1) ... [2022-03-16 10:25:06,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 10:25:06,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 10:25:06,680 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 10:25:06,684 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 10:25:06,717 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-16 10:25:06,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-16 10:25:06,718 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-16 10:25:06,718 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-16 10:25:06,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-16 10:25:06,718 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-16 10:25:06,718 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-16 10:25:06,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-16 10:25:06,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-16 10:25:06,719 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 10:25:06,736 INFO L234 CfgBuilder]: Building ICFG [2022-03-16 10:25:06,737 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-16 10:25:06,781 INFO L275 CfgBuilder]: Performing block encoding [2022-03-16 10:25:06,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-16 10:25:06,785 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-16 10:25:06,786 INFO L202 PluginConnector]: Adding new model nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 10:25:06 BoogieIcfgContainer [2022-03-16 10:25:06,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-16 10:25:06,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-16 10:25:06,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-16 10:25:06,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-16 10:25:06,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:25:06" (1/2) ... [2022-03-16 10:25:06,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771f659d and model type nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:25:06, skipping insertion in model container [2022-03-16 10:25:06,793 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 10:25:06" (2/2) ... [2022-03-16 10:25:06,794 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_fork.bpl [2022-03-16 10:25:06,797 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-16 10:25:06,797 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-16 10:25:06,798 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-16 10:25:06,798 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-16 10:25:06,829 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-03-16 10:25:06,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 10:25:06,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 10:25:06,858 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 10:25:06,869 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 10:25:06,891 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 10:25:06,898 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=true [2022-03-16 10:25:06,898 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-16 10:25:06,940 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 8 transitions and produced 9 states. [2022-03-16 10:25:06,942 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, thread1Thread1of1ForFork1Err0INUSE_VIOLATION] === [2022-03-16 10:25:06,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 10:25:06,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1046076718, now seen corresponding path program 1 times [2022-03-16 10:25:06,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 10:25:06,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596530152] [2022-03-16 10:25:06,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 10:25:06,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 10:25:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-16 10:25:07,017 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-16 10:25:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-16 10:25:07,038 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-16 10:25:07,040 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-16 10:25:07,041 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-03-16 10:25:07,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2INUSE_VIOLATION (2 of 4 remaining) [2022-03-16 10:25:07,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-16 10:25:07,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Thread1of1ForFork1Err0INUSE_VIOLATION (0 of 4 remaining) [2022-03-16 10:25:07,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-16 10:25:07,050 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-03-16 10:25:07,054 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-16 10:25:07,054 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-16 10:25:07,060 INFO L202 PluginConnector]: Adding new model nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 10:25:07 BasicIcfg [2022-03-16 10:25:07,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-16 10:25:07,062 INFO L158 Benchmark]: Toolchain (without parser) took 442.59ms. Allocated memory is still 197.1MB. Free memory was 162.5MB in the beginning and 135.5MB in the end (delta: 27.0MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2022-03-16 10:25:07,063 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 197.1MB. Free memory is still 163.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-16 10:25:07,066 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.55ms. Allocated memory is still 197.1MB. Free memory was 162.4MB in the beginning and 160.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-16 10:25:07,066 INFO L158 Benchmark]: Boogie Preprocessor took 10.32ms. Allocated memory is still 197.1MB. Free memory was 160.9MB in the beginning and 160.0MB in the end (delta: 904.1kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-16 10:25:07,066 INFO L158 Benchmark]: RCFGBuilder took 133.78ms. Allocated memory is still 197.1MB. Free memory was 160.0MB in the beginning and 152.7MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-16 10:25:07,067 INFO L158 Benchmark]: TraceAbstraction took 273.16ms. Allocated memory is still 197.1MB. Free memory was 152.1MB in the beginning and 135.5MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-03-16 10:25:07,071 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 0.10ms. Allocated memory is still 197.1MB. Free memory is still 163.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.55ms. Allocated memory is still 197.1MB. Free memory was 162.4MB in the beginning and 160.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.32ms. Allocated memory is still 197.1MB. Free memory was 160.9MB in the beginning and 160.0MB in the end (delta: 904.1kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 133.78ms. Allocated memory is still 197.1MB. Free memory was 160.0MB in the beginning and 152.7MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 273.16ms. Allocated memory is still 197.1MB. Free memory was 152.1MB in the beginning and 135.5MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. 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 10:25:07,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2022-03-16 10:25:07,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...