/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy-NoForkJoinOpt-wrwc.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/example1.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 22:52:07,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 22:52:07,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 22:52:07,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-01 22:52:07,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-01 22:52:07,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-01 22:52:07,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-01 22:52:07,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-01 22:52:07,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-01 22:52:07,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-01 22:52:07,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-01 22:52:07,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-01 22:52:07,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-01 22:52:07,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-01 22:52:07,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-01 22:52:07,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-01 22:52:07,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-01 22:52:07,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-01 22:52:07,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-01 22:52:07,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-01 22:52:07,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-01 22:52:07,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-01 22:52:07,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-01 22:52:07,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-01 22:52:07,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-01 22:52:07,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-01 22:52:07,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-01 22:52:07,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-01 22:52:07,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-01 22:52:07,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-01 22:52:07,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-01 22:52:07,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-01 22:52:07,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-01 22:52:07,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-01 22:52:07,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-01 22:52:07,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-01 22:52:07,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-01 22:52:07,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-01 22:52:07,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 22:52:07,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 22:52:07,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 22:52:07,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy-NoForkJoinOpt-wrwc.epf [2022-03-01 22:52:07,486 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 22:52:07,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 22:52:07,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 22:52:07,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 22:52:07,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 22:52:07,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 22:52:07,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 22:52:07,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 22:52:07,489 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 22:52:07,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 22:52:07,489 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 22:52:07,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 22:52:07,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 22:52:07,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 22:52:07,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 22:52:07,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 22:52:07,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 22:52:07,490 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 22:52:07,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 22:52:07,490 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 22:52:07,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 22:52:07,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 22:52:07,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 22:52:07,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 22:52:07,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 22:52:07,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 22:52:07,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 22:52:07,492 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-01 22:52:07,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 22:52:07,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 22:52:07,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 22:52:07,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 22:52:07,492 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 22:52:07,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-01 22:52:07,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 22:52:07,493 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-01 22:52:07,493 INFO L138 SettingsManager]: * MCR: Overapproximate write-read-write conflicts=false [2022-03-01 22:52:07,493 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-01 22:52:07,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 22:52:07,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 22:52:07,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 22:52:07,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 22:52:07,692 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-01 22:52:07,693 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-01 22:52:07,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example1.bpl [2022-03-01 22:52:07,694 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example1.bpl' [2022-03-01 22:52:07,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 22:52:07,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-01 22:52:07,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 22:52:07,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 22:52:07,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 22:52:07,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:07" (1/1) ... [2022-03-01 22:52:07,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:07" (1/1) ... [2022-03-01 22:52:07,729 INFO L137 Inliner]: procedures = 3, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-01 22:52:07,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 22:52:07,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 22:52:07,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 22:52:07,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 22:52:07,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:07" (1/1) ... [2022-03-01 22:52:07,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:07" (1/1) ... [2022-03-01 22:52:07,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:07" (1/1) ... [2022-03-01 22:52:07,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:07" (1/1) ... [2022-03-01 22:52:07,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:07" (1/1) ... [2022-03-01 22:52:07,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:07" (1/1) ... [2022-03-01 22:52:07,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:07" (1/1) ... [2022-03-01 22:52:07,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 22:52:07,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 22:52:07,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 22:52:07,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 22:52:07,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:07" (1/1) ... [2022-03-01 22:52:07,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 22:52:07,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 22:52:07,769 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) [2022-03-01 22:52:07,770 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 [2022-03-01 22:52:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-03-01 22:52:07,794 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-03-01 22:52:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 22:52:07,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 22:52:07,795 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 22:52:07,824 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 22:52:07,825 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 22:52:07,876 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 22:52:07,884 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 22:52:07,885 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-01 22:52:07,888 INFO L202 PluginConnector]: Adding new model example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 10:52:07 BoogieIcfgContainer [2022-03-01 22:52:07,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 22:52:07,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 22:52:07,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 22:52:07,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 22:52:07,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:07" (1/2) ... [2022-03-01 22:52:07,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dda131 and model type example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 10:52:07, skipping insertion in model container [2022-03-01 22:52:07,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 10:52:07" (2/2) ... [2022-03-01 22:52:07,902 INFO L111 eAbstractionObserver]: Analyzing ICFG example1.bpl [2022-03-01 22:52:07,912 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 22:52:07,912 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 22:52:07,912 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 22:52:07,913 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 22:52:07,947 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-03-01 22:52:08,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-01 22:52:08,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 22:52:08,016 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) [2022-03-01 22:52:08,019 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 [2022-03-01 22:52:08,043 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 22:52:08,050 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=false, mMcrOverapproximateWrwc=false [2022-03-01 22:52:08,051 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-01 22:52:08,098 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 9 transitions and produced 10 states. [2022-03-01 22:52:08,100 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 22:52:08,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 22:52:08,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2087027823, now seen corresponding path program 1 times [2022-03-01 22:52:08,110 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 22:52:08,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906078339] [2022-03-01 22:52:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 22:52:08,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 22:52:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-01 22:52:08,195 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-01 22:52:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-01 22:52:08,218 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-01 22:52:08,219 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-01 22:52:08,220 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-03-01 22:52:08,221 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-03-01 22:52:08,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 22:52:08,228 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-03-01 22:52:08,231 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 22:52:08,231 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 22:52:08,237 INFO L202 PluginConnector]: Adding new model example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 10:52:08 BasicIcfg [2022-03-01 22:52:08,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 22:52:08,238 INFO L158 Benchmark]: Toolchain (without parser) took 527.59ms. Allocated memory is still 209.7MB. Free memory was 168.5MB in the beginning and 176.2MB in the end (delta: -7.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 22:52:08,239 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.31ms. Allocated memory is still 209.7MB. Free memory is still 169.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 22:52:08,243 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.14ms. Allocated memory is still 209.7MB. Free memory was 168.4MB in the beginning and 167.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 22:52:08,243 INFO L158 Benchmark]: Boogie Preprocessor took 9.20ms. Allocated memory is still 209.7MB. Free memory was 166.9MB in the beginning and 166.1MB in the end (delta: 738.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 22:52:08,244 INFO L158 Benchmark]: RCFGBuilder took 147.27ms. Allocated memory is still 209.7MB. Free memory was 166.0MB in the beginning and 158.6MB in the end (delta: 7.4MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-01 22:52:08,244 INFO L158 Benchmark]: TraceAbstraction took 343.84ms. Allocated memory is still 209.7MB. Free memory was 158.2MB in the beginning and 176.2MB in the end (delta: -18.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 22:52:08,248 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 0.31ms. Allocated memory is still 209.7MB. Free memory is still 169.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.14ms. Allocated memory is still 209.7MB. Free memory was 168.4MB in the beginning and 167.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 9.20ms. Allocated memory is still 209.7MB. Free memory was 166.9MB in the beginning and 166.1MB in the end (delta: 738.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 147.27ms. Allocated memory is still 209.7MB. Free memory was 166.0MB in the beginning and 158.6MB in the end (delta: 7.4MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 343.84ms. Allocated memory is still 209.7MB. Free memory was 158.2MB in the beginning and 176.2MB in the end (delta: -18.0MB). 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! [2022-03-01 22:52:08,278 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 [2022-03-01 22:52:08,484 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...