/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/single_assertion_test.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 16:06:10,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 16:06:11,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 16:06:11,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 16:06:11,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-10 16:06:11,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-10 16:06:11,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-10 16:06:11,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-10 16:06:11,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-10 16:06:11,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-10 16:06:11,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-10 16:06:11,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-10 16:06:11,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-10 16:06:11,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-10 16:06:11,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-10 16:06:11,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-10 16:06:11,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-10 16:06:11,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks-Lazy.epf [2022-02-10 16:06:11,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 16:06:11,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 16:06:11,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 16:06:11,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 16:06:11,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 16:06:11,116 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 16:06:11,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 16:06:11,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 16:06:11,117 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 16:06:11,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 16:06:11,117 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 16:06:11,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 16:06:11,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 16:06:11,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 16:06:11,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 16:06:11,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 16:06:11,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 16:06:11,117 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 16:06:11,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 16:06:11,118 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 16:06:11,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 16:06:11,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 16:06:11,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 16:06:11,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 16:06:11,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 16:06:11,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 16:06:11,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 16:06:11,118 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-10 16:06:11,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 16:06:11,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 16:06:11,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 16:06:11,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 16:06:11,119 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 16:06:11,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-10 16:06:11,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 16:06:11,119 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-02-10 16:06:11,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 16:06:11,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 16:06:11,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 16:06:11,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 16:06:11,334 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 16:06:11,336 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 16:06:11,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/single_assertion_test.bpl [2022-02-10 16:06:11,337 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/single_assertion_test.bpl' [2022-02-10 16:06:11,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 16:06:11,357 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 16:06:11,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 16:06:11,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 16:06:11,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 16:06:11,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:11" (1/1) ... [2022-02-10 16:06:11,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:11" (1/1) ... [2022-02-10 16:06:11,375 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 16:06:11,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 16:06:11,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 16:06:11,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 16:06:11,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 16:06:11,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:11" (1/1) ... [2022-02-10 16:06:11,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:11" (1/1) ... [2022-02-10 16:06:11,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:11" (1/1) ... [2022-02-10 16:06:11,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:11" (1/1) ... [2022-02-10 16:06:11,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:11" (1/1) ... [2022-02-10 16:06:11,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:11" (1/1) ... [2022-02-10 16:06:11,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:11" (1/1) ... [2022-02-10 16:06:11,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 16:06:11,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 16:06:11,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 16:06:11,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 16:06:11,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:11" (1/1) ... [2022-02-10 16:06:11,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 16:06:11,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 16:06:11,413 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) [2022-02-10 16:06:11,419 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 [2022-02-10 16:06:11,438 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 16:06:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 16:06:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 16:06:11,438 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2022-02-10 16:06:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-02-10 16:06:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-02-10 16:06:11,439 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 16:06:11,470 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 16:06:11,472 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 16:06:11,544 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 16:06:11,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 16:06:11,550 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-10 16:06:11,552 INFO L202 PluginConnector]: Adding new model single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 04:06:11 BoogieIcfgContainer [2022-02-10 16:06:11,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 16:06:11,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 16:06:11,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 16:06:11,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 16:06:11,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:11" (1/2) ... [2022-02-10 16:06:11,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e0541a and model type single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 04:06:11, skipping insertion in model container [2022-02-10 16:06:11,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 04:06:11" (2/2) ... [2022-02-10 16:06:11,561 INFO L111 eAbstractionObserver]: Analyzing ICFG single_assertion_test.bpl [2022-02-10 16:06:11,571 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 16:06:11,571 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 16:06:11,571 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-10 16:06:11,571 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 16:06:11,596 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:11,596 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:11,597 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:11,597 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:11,610 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 16:06:11,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-10 16:06:11,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 16:06:11,653 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) [2022-02-10 16:06:11,654 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 [2022-02-10 16:06:11,684 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 16:06:11,694 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 [2022-02-10 16:06:11,695 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-10 16:06:11,758 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 15 transitions and produced 16 states. [2022-02-10 16:06:11,760 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-10 16:06:11,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 16:06:11,765 INFO L85 PathProgramCache]: Analyzing trace with hash 43331864, now seen corresponding path program 1 times [2022-02-10 16:06:11,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 16:06:11,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462304171] [2022-02-10 16:06:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:06:11,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 16:06:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:06:11,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:06:11,964 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 16:06:11,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462304171] [2022-02-10 16:06:11,965 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462304171] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 16:06:11,965 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430885378] [2022-02-10 16:06:11,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:06:11,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 16:06:11,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 16:06:11,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 16:06:11,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 16:06:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:06:12,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-10 16:06:12,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 16:06:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:06:12,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 16:06:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:06:12,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430885378] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 16:06:12,202 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 16:06:12,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-02-10 16:06:12,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946849207] [2022-02-10 16:06:12,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 16:06:12,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 16:06:12,211 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 16:06:12,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 16:06:12,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 16:06:12,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:06:12,268 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 16:06:12,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 16:06:12,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:06:12,312 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 18 transitions and produced 19 states. [2022-02-10 16:06:12,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 16:06:12,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 16:06:12,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-02-10 16:06:12,533 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-10 16:06:12,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 16:06:12,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1307749510, now seen corresponding path program 1 times [2022-02-10 16:06:12,534 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 16:06:12,534 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980238756] [2022-02-10 16:06:12,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:06:12,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 16:06:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 16:06:12,545 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-10 16:06:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 16:06:12,556 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-10 16:06:12,557 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-10 16:06:12,557 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2022-02-10 16:06:12,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 4 remaining) [2022-02-10 16:06:12,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 4 remaining) [2022-02-10 16:06:12,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 4 remaining) [2022-02-10 16:06:12,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 16:06:12,571 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-10 16:06:12,575 WARN L235 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-10 16:06:12,575 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-02-10 16:06:12,582 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:12,583 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:12,583 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:12,583 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:12,584 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:12,584 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:12,584 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:12,584 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:12,587 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-02-10 16:06:12,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-10 16:06:12,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 16:06:12,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-10 16:06:12,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2022-02-10 16:06:12,593 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 16:06:12,594 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 [2022-02-10 16:06:12,594 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-02-10 16:06:12,602 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 15 transitions and produced 16 states. [2022-02-10 16:06:12,602 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-10 16:06:12,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 16:06:12,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1095125660, now seen corresponding path program 1 times [2022-02-10 16:06:12,603 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 16:06:12,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699823175] [2022-02-10 16:06:12,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:06:12,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 16:06:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:06:12,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:06:12,635 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 16:06:12,635 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699823175] [2022-02-10 16:06:12,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699823175] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 16:06:12,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642204724] [2022-02-10 16:06:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:06:12,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 16:06:12,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 16:06:12,638 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 16:06:12,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 16:06:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:06:12,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-10 16:06:12,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 16:06:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:06:12,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 16:06:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:06:12,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642204724] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 16:06:12,773 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 16:06:12,773 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-02-10 16:06:12,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682406017] [2022-02-10 16:06:12,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 16:06:12,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 16:06:12,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 16:06:12,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 16:06:12,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 16:06:12,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:06:12,775 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 16:06:12,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 16:06:12,776 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:06:12,820 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 28 transitions and produced 29 states. [2022-02-10 16:06:12,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 16:06:12,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 16:06:13,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 16:06:13,044 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-10 16:06:13,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 16:06:13,045 INFO L85 PathProgramCache]: Analyzing trace with hash 490899392, now seen corresponding path program 1 times [2022-02-10 16:06:13,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 16:06:13,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560142242] [2022-02-10 16:06:13,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:06:13,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 16:06:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:06:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:06:13,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 16:06:13,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560142242] [2022-02-10 16:06:13,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560142242] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 16:06:13,075 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 16:06:13,075 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 16:06:13,075 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279888705] [2022-02-10 16:06:13,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 16:06:13,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 16:06:13,076 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 16:06:13,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 16:06:13,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 16:06:13,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:06:13,076 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 16:06:13,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 16:06:13,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-02-10 16:06:13,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:06:13,115 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 28 transitions and produced 29 states. [2022-02-10 16:06:13,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 16:06:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 16:06:13,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 16:06:13,116 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-10 16:06:13,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 16:06:13,118 INFO L85 PathProgramCache]: Analyzing trace with hash 490900353, now seen corresponding path program 1 times [2022-02-10 16:06:13,118 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 16:06:13,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290101957] [2022-02-10 16:06:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:06:13,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 16:06:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 16:06:13,128 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-10 16:06:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 16:06:13,134 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-10 16:06:13,134 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-10 16:06:13,134 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONASSERT (4 of 5 remaining) [2022-02-10 16:06:13,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 5 remaining) [2022-02-10 16:06:13,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 5 remaining) [2022-02-10 16:06:13,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 5 remaining) [2022-02-10 16:06:13,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 5 remaining) [2022-02-10 16:06:13,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-10 16:06:13,136 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-10 16:06:13,140 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-02-10 16:06:13,140 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 16:06:13,154 INFO L202 PluginConnector]: Adding new model single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 04:06:13 BasicIcfg [2022-02-10 16:06:13,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 16:06:13,155 INFO L158 Benchmark]: Toolchain (without parser) took 1797.46ms. Allocated memory was 203.4MB in the beginning and 318.8MB in the end (delta: 115.3MB). Free memory was 173.3MB in the beginning and 257.0MB in the end (delta: -83.6MB). Peak memory consumption was 31.2MB. Max. memory is 8.0GB. [2022-02-10 16:06:13,155 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 203.4MB. Free memory is still 174.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 16:06:13,156 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.51ms. Allocated memory is still 203.4MB. Free memory was 173.3MB in the beginning and 171.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 16:06:13,156 INFO L158 Benchmark]: Boogie Preprocessor took 10.03ms. Allocated memory is still 203.4MB. Free memory was 171.8MB in the beginning and 170.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 16:06:13,156 INFO L158 Benchmark]: RCFGBuilder took 165.76ms. Allocated memory is still 203.4MB. Free memory was 170.8MB in the beginning and 162.7MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-10 16:06:13,157 INFO L158 Benchmark]: TraceAbstraction took 1600.08ms. Allocated memory was 203.4MB in the beginning and 318.8MB in the end (delta: 115.3MB). Free memory was 162.2MB in the beginning and 257.0MB in the end (delta: -94.7MB). Peak memory consumption was 19.6MB. Max. memory is 8.0GB. [2022-02-10 16:06:13,158 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 203.4MB. Free memory is still 174.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.51ms. Allocated memory is still 203.4MB. Free memory was 173.3MB in the beginning and 171.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.03ms. Allocated memory is still 203.4MB. Free memory was 171.8MB in the beginning and 170.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 165.76ms. Allocated memory is still 203.4MB. Free memory was 170.8MB in the beginning and 162.7MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1600.08ms. Allocated memory was 203.4MB in the beginning and 318.8MB in the end (delta: 115.3MB). Free memory was 162.2MB in the beginning and 257.0MB in the end (delta: -94.7MB). Peak memory consumption was 19.6MB. 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 - 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: 41]: assertion can be violated assertion can be violated We found a FailurePath: [L19] 0 x := 0; VAL [x=0] [L21] 0 i := 0; VAL [i=0, x=0] [L22] COND TRUE 0 i < 2 VAL [i=0, x=0] [L24] FORK 0 fork i thread(i); VAL [i=0, i=0, x=0] [L25] 0 i := i + 1; VAL [i=1, i=0, x=0] [L22] COND TRUE 0 i < 2 VAL [i=1, i=0, x=0] [L38] 1 x := x + 1; VAL [i=0, i=1, x=1] [L41] 1 assert i == 0; VAL [i=0, i=1, x=1] [L24] FORK 0 fork i thread(i); VAL [i=1, i=1, x=1] [L25] 0 i := i + 1; VAL [i=1, i=2, x=1] [L22] COND FALSE 0 !(i < 2) VAL [i=2, i=1, x=1] [L38] 2 x := x + 1; VAL [i=2, i=1, x=2] [L41] 2 assert i == 0; VAL [i=2, i=1, x=2] - UnprovableResult [Line: 32]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 24]: 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, 22 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, 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: 5, 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, 0.3s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 153 SizeOfPredicates, 1 NumberOfNonLiveVariables, 17 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 3 InterpolantComputations, 0 PerfectInterpolantSequences, 0/3 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 27 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, 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: 10, 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, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 186 SizeOfPredicates, 1 NumberOfNonLiveVariables, 17 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 5/8 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! [2022-02-10 16:06:13,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Ended with exit code 0 [2022-02-10 16:06:13,384 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 [2022-02-10 16:06:13,588 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...