/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-MCRwithoutDepranks-Lazy.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-820ea7a [2022-02-20 10:51:22,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 10:51:22,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 10:51:22,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 10:51:22,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 10:51:22,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 10:51:22,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 10:51:22,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 10:51:22,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 10:51:22,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 10:51:22,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 10:51:22,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 10:51:22,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 10:51:22,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 10:51:22,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 10:51:22,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 10:51:22,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 10:51:22,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 10:51:22,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 10:51:22,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 10:51:22,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 10:51:22,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 10:51:22,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 10:51:22,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 10:51:22,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-20 10:51:22,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 10:51:22,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 10:51:22,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 10:51:22,224 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-MCRwithoutDepranks-Lazy.epf [2022-02-20 10:51:22,236 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 10:51:22,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 10:51:22,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 10:51:22,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 10:51:22,237 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 10:51:22,237 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 10:51:22,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 10:51:22,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 10:51:22,238 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 10:51:22,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 10:51:22,238 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 10:51:22,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 10:51:22,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 10:51:22,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 10:51:22,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 10:51:22,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 10:51:22,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 10:51:22,238 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 10:51:22,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 10:51:22,239 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 10:51:22,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 10:51:22,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 10:51:22,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 10:51:22,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-20 10:51:22,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 10:51:22,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 10:51:22,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 10:51:22,239 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-20 10:51:22,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 10:51:22,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 10:51:22,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 10:51:22,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 10:51:22,240 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 10:51:22,240 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-20 10:51:22,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 10:51:22,240 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-02-20 10:51:22,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-20 10:51:22,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 10:51:22,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 10:51:22,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 10:51:22,450 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-20 10:51:22,450 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-20 10:51:22,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/nested_fork.bpl [2022-02-20 10:51:22,451 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/nested_fork.bpl' [2022-02-20 10:51:22,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 10:51:22,469 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-20 10:51:22,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 10:51:22,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 10:51:22,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 10:51:22,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:51:22" (1/1) ... [2022-02-20 10:51:22,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:51:22" (1/1) ... [2022-02-20 10:51:22,493 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-20 10:51:22,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 10:51:22,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 10:51:22,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 10:51:22,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 10:51:22,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:51:22" (1/1) ... [2022-02-20 10:51:22,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:51:22" (1/1) ... [2022-02-20 10:51:22,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:51:22" (1/1) ... [2022-02-20 10:51:22,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:51:22" (1/1) ... [2022-02-20 10:51:22,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:51:22" (1/1) ... [2022-02-20 10:51:22,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:51:22" (1/1) ... [2022-02-20 10:51:22,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:51:22" (1/1) ... [2022-02-20 10:51:22,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 10:51:22,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 10:51:22,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 10:51:22,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 10:51:22,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:51:22" (1/1) ... [2022-02-20 10:51:22,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 10:51:22,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 10:51:22,525 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) [2022-02-20 10:51:22,531 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 [2022-02-20 10:51:22,552 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-20 10:51:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-20 10:51:22,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-20 10:51:22,552 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-20 10:51:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-20 10:51:22,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-20 10:51:22,552 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-20 10:51:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 10:51:22,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 10:51:22,553 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-20 10:51:22,570 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 10:51:22,571 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 10:51:22,611 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 10:51:22,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 10:51:22,615 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 10:51:22,616 INFO L202 PluginConnector]: Adding new model nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 10:51:22 BoogieIcfgContainer [2022-02-20 10:51:22,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 10:51:22,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 10:51:22,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 10:51:22,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 10:51:22,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:51:22" (1/2) ... [2022-02-20 10:51:22,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ebc267 and model type nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 10:51:22, skipping insertion in model container [2022-02-20 10:51:22,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 10:51:22" (2/2) ... [2022-02-20 10:51:22,622 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_fork.bpl [2022-02-20 10:51:22,625 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-20 10:51:22,626 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 10:51:22,626 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 10:51:22,626 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-20 10:51:22,648 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-02-20 10:51:22,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-20 10:51:22,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 10:51:22,689 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) [2022-02-20 10:51:22,690 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 [2022-02-20 10:51:22,714 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 10:51:22,726 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 [2022-02-20 10:51:22,727 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-20 10:51:22,779 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 8 transitions and produced 9 states. [2022-02-20 10:51:22,780 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, thread1Thread1of1ForFork1Err0INUSE_VIOLATION] === [2022-02-20 10:51:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 10:51:22,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1046076718, now seen corresponding path program 1 times [2022-02-20 10:51:22,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 10:51:22,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405124766] [2022-02-20 10:51:22,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 10:51:22,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 10:51:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 10:51:22,843 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 10:51:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 10:51:22,856 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 10:51:22,857 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 10:51:22,858 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-02-20 10:51:22,859 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2INUSE_VIOLATION (2 of 4 remaining) [2022-02-20 10:51:22,859 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-20 10:51:22,859 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Thread1of1ForFork1Err0INUSE_VIOLATION (0 of 4 remaining) [2022-02-20 10:51:22,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 10:51:22,864 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-20 10:51:22,867 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-20 10:51:22,867 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 10:51:22,872 INFO L202 PluginConnector]: Adding new model nested_fork.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 10:51:22 BasicIcfg [2022-02-20 10:51:22,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-20 10:51:22,872 INFO L158 Benchmark]: Toolchain (without parser) took 403.70ms. Allocated memory is still 187.7MB. Free memory was 145.6MB in the beginning and 152.7MB in the end (delta: -7.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-20 10:51:22,873 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-20 10:51:22,873 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.48ms. Allocated memory is still 187.7MB. Free memory was 145.5MB in the beginning and 144.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-20 10:51:22,873 INFO L158 Benchmark]: Boogie Preprocessor took 8.11ms. Allocated memory is still 187.7MB. Free memory was 144.0MB in the beginning and 143.2MB in the end (delta: 838.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-20 10:51:22,874 INFO L158 Benchmark]: RCFGBuilder took 112.48ms. Allocated memory is still 187.7MB. Free memory was 143.1MB in the beginning and 136.1MB in the end (delta: 7.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-20 10:51:22,874 INFO L158 Benchmark]: TraceAbstraction took 253.93ms. Allocated memory is still 187.7MB. Free memory was 135.7MB in the beginning and 152.7MB in the end (delta: -17.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-20 10:51:22,875 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 187.7MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.48ms. Allocated memory is still 187.7MB. Free memory was 145.5MB in the beginning and 144.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 8.11ms. Allocated memory is still 187.7MB. Free memory was 144.0MB in the beginning and 143.2MB in the end (delta: 838.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 112.48ms. Allocated memory is still 187.7MB. Free memory was 143.1MB in the beginning and 136.1MB in the end (delta: 7.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 253.93ms. Allocated memory is still 187.7MB. Free memory was 135.7MB in the beginning and 152.7MB in the end (delta: -17.0MB). 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! [2022-02-20 10:51:22,898 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 [2022-02-20 10:51:23,115 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...