/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-wrwc.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/example1.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-19 22:07:54,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-19 22:07:54,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-19 22:07:54,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-19 22:07:54,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-19 22:07:54,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-19 22:07:54,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-19 22:07:54,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-19 22:07:54,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-19 22:07:54,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-19 22:07:54,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-19 22:07:54,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-19 22:07:54,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-19 22:07:54,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-19 22:07:54,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-19 22:07:54,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-19 22:07:54,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-19 22:07:54,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-19 22:07:54,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-19 22:07:54,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-19 22:07:54,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-19 22:07:54,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-19 22:07:54,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-19 22:07:54,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-19 22:07:54,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-19 22:07:54,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-19 22:07:54,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-19 22:07:54,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-19 22:07:54,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-19 22:07:54,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-19 22:07:54,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-19 22:07:54,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-19 22:07:54,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-19 22:07:54,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-19 22:07:54,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-19 22:07:54,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-19 22:07:54,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-19 22:07:54,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-19 22:07:54,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-19 22:07:54,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-19 22:07:54,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-19 22:07:54,692 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-wrwc.epf [2022-02-19 22:07:54,717 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-19 22:07:54,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-19 22:07:54,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-19 22:07:54,718 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-19 22:07:54,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-19 22:07:54,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-19 22:07:54,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-19 22:07:54,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-19 22:07:54,719 INFO L138 SettingsManager]: * Use SBE=true [2022-02-19 22:07:54,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-19 22:07:54,720 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-19 22:07:54,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-19 22:07:54,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-19 22:07:54,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-19 22:07:54,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-19 22:07:54,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-19 22:07:54,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-19 22:07:54,721 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-19 22:07:54,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-19 22:07:54,721 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-19 22:07:54,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-19 22:07:54,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-19 22:07:54,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-19 22:07:54,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-19 22:07:54,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-19 22:07:54,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-19 22:07:54,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-19 22:07:54,723 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-19 22:07:54,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-19 22:07:54,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-19 22:07:54,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-19 22:07:54,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-19 22:07:54,723 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-19 22:07:54,724 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-19 22:07:54,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-19 22:07:54,724 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-19 22:07:54,724 INFO L138 SettingsManager]: * MCR: Overapproximate write-read-write conflicts=false [2022-02-19 22:07:54,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-19 22:07:54,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-19 22:07:54,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-19 22:07:54,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-19 22:07:54,941 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-19 22:07:54,942 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-19 22:07:54,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example1.bpl [2022-02-19 22:07:54,943 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example1.bpl' [2022-02-19 22:07:54,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-19 22:07:54,957 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-19 22:07:54,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-19 22:07:54,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-19 22:07:54,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-19 22:07:54,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:07:54" (1/1) ... [2022-02-19 22:07:54,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:07:54" (1/1) ... [2022-02-19 22:07:54,975 INFO L137 Inliner]: procedures = 3, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-19 22:07:54,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-19 22:07:54,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-19 22:07:54,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-19 22:07:54,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-19 22:07:54,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:07:54" (1/1) ... [2022-02-19 22:07:54,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:07:54" (1/1) ... [2022-02-19 22:07:54,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:07:54" (1/1) ... [2022-02-19 22:07:54,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:07:54" (1/1) ... [2022-02-19 22:07:54,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:07:54" (1/1) ... [2022-02-19 22:07:54,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:07:54" (1/1) ... [2022-02-19 22:07:54,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:07:54" (1/1) ... [2022-02-19 22:07:54,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-19 22:07:54,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-19 22:07:54,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-19 22:07:54,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-19 22:07:54,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:07:54" (1/1) ... [2022-02-19 22:07:54,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-19 22:07:55,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 22:07:55,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-19 22:07:55,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-19 22:07:55,083 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-02-19 22:07:55,083 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-02-19 22:07:55,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-19 22:07:55,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-19 22:07:55,084 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-19 22:07:55,114 INFO L234 CfgBuilder]: Building ICFG [2022-02-19 22:07:55,116 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-19 22:07:55,164 INFO L275 CfgBuilder]: Performing block encoding [2022-02-19 22:07:55,170 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-19 22:07:55,171 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-19 22:07:55,173 INFO L202 PluginConnector]: Adding new model example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 10:07:55 BoogieIcfgContainer [2022-02-19 22:07:55,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-19 22:07:55,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-19 22:07:55,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-19 22:07:55,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-19 22:07:55,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:07:54" (1/2) ... [2022-02-19 22:07:55,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f9baf2 and model type example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 10:07:55, skipping insertion in model container [2022-02-19 22:07:55,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 10:07:55" (2/2) ... [2022-02-19 22:07:55,182 INFO L111 eAbstractionObserver]: Analyzing ICFG example1.bpl [2022-02-19 22:07:55,187 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-19 22:07:55,188 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-19 22:07:55,188 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-19 22:07:55,188 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-19 22:07:55,211 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-02-19 22:07:55,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-19 22:07:55,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 22:07:55,254 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-19 22:07:55,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-19 22:07:55,307 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-19 22:07:55,315 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=false [2022-02-19 22:07:55,315 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-19 22:07:55,366 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 9 transitions and produced 10 states. [2022-02-19 22:07:55,368 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-19 22:07:55,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 22:07:55,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2087027823, now seen corresponding path program 1 times [2022-02-19 22:07:55,378 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 22:07:55,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944171494] [2022-02-19 22:07:55,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 22:07:55,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 22:07:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-19 22:07:55,437 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-19 22:07:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-19 22:07:55,460 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-19 22:07:55,461 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-19 22:07:55,462 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-02-19 22:07:55,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-02-19 22:07:55,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-19 22:07:55,470 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-19 22:07:55,474 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-19 22:07:55,474 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-19 22:07:55,480 INFO L202 PluginConnector]: Adding new model example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 10:07:55 BasicIcfg [2022-02-19 22:07:55,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-19 22:07:55,481 INFO L158 Benchmark]: Toolchain (without parser) took 524.06ms. Allocated memory is still 223.3MB. Free memory was 187.0MB in the beginning and 191.8MB in the end (delta: -4.8MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-19 22:07:55,482 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 223.3MB. Free memory is still 188.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-19 22:07:55,486 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.30ms. Allocated memory is still 223.3MB. Free memory was 187.0MB in the beginning and 185.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-19 22:07:55,486 INFO L158 Benchmark]: Boogie Preprocessor took 8.52ms. Allocated memory is still 223.3MB. Free memory was 185.4MB in the beginning and 184.7MB in the end (delta: 764.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-19 22:07:55,486 INFO L158 Benchmark]: RCFGBuilder took 187.27ms. Allocated memory is still 223.3MB. Free memory was 184.6MB in the beginning and 177.3MB in the end (delta: 7.2MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-19 22:07:55,486 INFO L158 Benchmark]: TraceAbstraction took 304.97ms. Allocated memory is still 223.3MB. Free memory was 176.8MB in the beginning and 191.8MB in the end (delta: -15.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-19 22:07:55,490 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 223.3MB. Free memory is still 188.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.30ms. Allocated memory is still 223.3MB. Free memory was 187.0MB in the beginning and 185.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 8.52ms. Allocated memory is still 223.3MB. Free memory was 185.4MB in the beginning and 184.7MB in the end (delta: 764.6kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 187.27ms. Allocated memory is still 223.3MB. Free memory was 184.6MB in the beginning and 177.3MB in the end (delta: 7.2MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 304.97ms. Allocated memory is still 223.3MB. Free memory was 176.8MB in the beginning and 191.8MB in the end (delta: -15.0MB). 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: 26]: assertion can be violated assertion can be violated We found a FailurePath: [L20] 0 x := 1; VAL [x=1] [L21] FORK 0 fork 1 foo(); VAL [x=1] [L22] 0 n := 2; VAL [n=2, x=1] [L34] 1 n := 1; VAL [n=1, x=1] [L24] JOIN 1 join x; VAL [n=1, x=1] [L25] 0 x := 4; VAL [n=1, x=4] [L26] 0 assert false; VAL [n=1, x=4] - UnprovableResult [Line: 21]: 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 3 procedures, 16 locations, 2 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, 8 NumberOfCodeBlocks, 8 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! [2022-02-19 22:07:55,518 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 [2022-02-19 22:07:55,741 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...