/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/example1.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-02 03:28:14,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-02 03:28:14,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-02 03:28:14,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-02 03:28:14,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-02 03:28:14,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-02 03:28:14,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-02 03:28:14,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-02 03:28:14,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-02 03:28:14,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-02 03:28:14,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-02 03:28:14,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-02 03:28:14,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-02 03:28:14,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-02 03:28:14,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-02 03:28:14,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-02 03:28:14,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-02 03:28:14,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-02 03:28:14,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-02 03:28:14,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-02 03:28:14,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-02 03:28:14,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-02 03:28:14,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-02 03:28:14,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-02 03:28:14,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-02 03:28:14,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-02 03:28:14,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-02 03:28:14,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-02 03:28:14,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-02 03:28:14,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-02 03:28:14,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-02 03:28:14,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-02 03:28:14,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-02 03:28:14,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-02 03:28:14,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-02 03:28:14,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-02 03:28:14,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-02 03:28:14,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-02 03:28:14,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-02 03:28:14,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-02 03:28:14,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-02 03:28:14,837 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 [2022-03-02 03:28:14,860 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-02 03:28:14,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-02 03:28:14,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-02 03:28:14,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-02 03:28:14,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-02 03:28:14,862 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-02 03:28:14,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-02 03:28:14,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-02 03:28:14,863 INFO L138 SettingsManager]: * Use SBE=true [2022-03-02 03:28:14,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-02 03:28:14,863 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-02 03:28:14,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-02 03:28:14,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-02 03:28:14,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-02 03:28:14,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-02 03:28:14,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-02 03:28:14,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-02 03:28:14,864 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-02 03:28:14,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-02 03:28:14,864 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-02 03:28:14,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-02 03:28:14,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-02 03:28:14,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-02 03:28:14,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-02 03:28:14,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-02 03:28:14,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-02 03:28:14,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-02 03:28:14,866 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-02 03:28:14,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-02 03:28:14,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-02 03:28:14,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-02 03:28:14,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-02 03:28:14,866 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-02 03:28:14,866 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-02 03:28:14,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-02 03:28:14,866 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-02 03:28:14,867 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-02 03:28:14,867 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-02 03:28:15,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-02 03:28:15,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-02 03:28:15,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-02 03:28:15,103 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-02 03:28:15,104 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-02 03:28:15,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example1.bpl [2022-03-02 03:28:15,105 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example1.bpl' [2022-03-02 03:28:15,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-02 03:28:15,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-02 03:28:15,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-02 03:28:15,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-02 03:28:15,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-02 03:28:15,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:28:15" (1/1) ... [2022-03-02 03:28:15,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:28:15" (1/1) ... [2022-03-02 03:28:15,143 INFO L137 Inliner]: procedures = 3, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-02 03:28:15,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-02 03:28:15,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-02 03:28:15,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-02 03:28:15,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-02 03:28:15,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:28:15" (1/1) ... [2022-03-02 03:28:15,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:28:15" (1/1) ... [2022-03-02 03:28:15,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:28:15" (1/1) ... [2022-03-02 03:28:15,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:28:15" (1/1) ... [2022-03-02 03:28:15,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:28:15" (1/1) ... [2022-03-02 03:28:15,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:28:15" (1/1) ... [2022-03-02 03:28:15,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:28:15" (1/1) ... [2022-03-02 03:28:15,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-02 03:28:15,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-02 03:28:15,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-02 03:28:15,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-02 03:28:15,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:28:15" (1/1) ... [2022-03-02 03:28:15,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-02 03:28:15,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 03:28:15,187 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) [2022-03-02 03:28:15,206 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 [2022-03-02 03:28:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-03-02 03:28:15,226 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-03-02 03:28:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-02 03:28:15,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-02 03:28:15,227 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-02 03:28:15,256 INFO L234 CfgBuilder]: Building ICFG [2022-03-02 03:28:15,257 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-02 03:28:15,300 INFO L275 CfgBuilder]: Performing block encoding [2022-03-02 03:28:15,304 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-02 03:28:15,305 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-02 03:28:15,306 INFO L202 PluginConnector]: Adding new model example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.03 03:28:15 BoogieIcfgContainer [2022-03-02 03:28:15,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-02 03:28:15,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-02 03:28:15,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-02 03:28:15,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-02 03:28:15,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 03:28:15" (1/2) ... [2022-03-02 03:28:15,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d81e1a1 and model type example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.03 03:28:15, skipping insertion in model container [2022-03-02 03:28:15,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.03 03:28:15" (2/2) ... [2022-03-02 03:28:15,311 INFO L111 eAbstractionObserver]: Analyzing ICFG example1.bpl [2022-03-02 03:28:15,315 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-02 03:28:15,315 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-02 03:28:15,315 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-02 03:28:15,315 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-02 03:28:15,329 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-03-02 03:28:15,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-02 03:28:15,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 03:28:15,365 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) [2022-03-02 03:28:15,392 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 [2022-03-02 03:28:15,422 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-02 03:28:15,432 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 [2022-03-02 03:28:15,432 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-02 03:28:15,507 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 9 transitions and produced 10 states. [2022-03-02 03:28:15,509 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-02 03:28:15,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 03:28:15,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2087027823, now seen corresponding path program 1 times [2022-03-02 03:28:15,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 03:28:15,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041804598] [2022-03-02 03:28:15,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 03:28:15,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 03:28:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-02 03:28:15,577 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-02 03:28:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-02 03:28:15,599 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-02 03:28:15,601 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-02 03:28:15,601 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-03-02 03:28:15,603 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-03-02 03:28:15,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-02 03:28:15,610 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-03-02 03:28:15,613 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-02 03:28:15,613 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-02 03:28:15,621 INFO L202 PluginConnector]: Adding new model example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.03 03:28:15 BasicIcfg [2022-03-02 03:28:15,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-02 03:28:15,622 INFO L158 Benchmark]: Toolchain (without parser) took 498.66ms. Allocated memory is still 185.6MB. Free memory was 150.6MB in the beginning and 156.9MB in the end (delta: -6.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-02 03:28:15,623 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 185.6MB. Free memory is still 151.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-02 03:28:15,626 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.78ms. Allocated memory is still 185.6MB. Free memory was 150.4MB in the beginning and 149.0MB in the end (delta: 1.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-02 03:28:15,626 INFO L158 Benchmark]: Boogie Preprocessor took 12.24ms. Allocated memory is still 185.6MB. Free memory was 148.9MB in the beginning and 148.1MB in the end (delta: 797.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-02 03:28:15,626 INFO L158 Benchmark]: RCFGBuilder took 146.47ms. Allocated memory is still 185.6MB. Free memory was 148.1MB in the beginning and 140.7MB in the end (delta: 7.4MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-02 03:28:15,626 INFO L158 Benchmark]: TraceAbstraction took 313.54ms. Allocated memory is still 185.6MB. Free memory was 140.2MB in the beginning and 156.9MB in the end (delta: -16.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-02 03:28:15,630 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 185.6MB. Free memory is still 151.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.78ms. Allocated memory is still 185.6MB. Free memory was 150.4MB in the beginning and 149.0MB in the end (delta: 1.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.24ms. Allocated memory is still 185.6MB. Free memory was 148.9MB in the beginning and 148.1MB in the end (delta: 797.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 146.47ms. Allocated memory is still 185.6MB. Free memory was 148.1MB in the beginning and 140.7MB in the end (delta: 7.4MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 313.54ms. Allocated memory is still 185.6MB. Free memory was 140.2MB in the beginning and 156.9MB in the end (delta: -16.7MB). 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: 0.3s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: 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! [2022-03-02 03:28:15,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-03-02 03:28:15,875 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...