/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-POR-NewStatesSleepPersistentFixedOrder-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-19 03:26:34,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-19 03:26:34,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-19 03:26:34,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-19 03:26:34,943 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-POR-NewStatesSleepPersistentFixedOrder-NoLbe.epf [2022-02-19 03:26:34,955 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-19 03:26:34,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-19 03:26:34,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-19 03:26:34,956 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-19 03:26:34,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-19 03:26:34,957 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-19 03:26:34,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-19 03:26:34,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-19 03:26:34,957 INFO L138 SettingsManager]: * Use SBE=true [2022-02-19 03:26:34,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-19 03:26:34,957 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-19 03:26:34,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-19 03:26:34,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-19 03:26:34,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-19 03:26:34,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-19 03:26:34,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-19 03:26:34,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-19 03:26:34,958 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-19 03:26:34,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-19 03:26:34,958 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-19 03:26:34,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-19 03:26:34,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-19 03:26:34,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-19 03:26:34,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-19 03:26:34,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-19 03:26:34,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-19 03:26:34,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-19 03:26:34,959 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-19 03:26:34,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-19 03:26:34,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-19 03:26:34,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-19 03:26:34,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-19 03:26:34,960 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-19 03:26:34,960 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-19 03:26:34,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-19 03:26:34,960 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-02-19 03:26:34,961 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-02-19 03:26:34,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-19 03:26:35,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-19 03:26:35,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-19 03:26:35,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-19 03:26:35,162 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-19 03:26:35,163 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-19 03:26:35,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl [2022-02-19 03:26:35,164 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl' [2022-02-19 03:26:35,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-19 03:26:35,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-19 03:26:35,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-19 03:26:35,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-19 03:26:35,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-19 03:26:35,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:26:35" (1/1) ... [2022-02-19 03:26:35,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:26:35" (1/1) ... [2022-02-19 03:26:35,217 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-19 03:26:35,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-19 03:26:35,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-19 03:26:35,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-19 03:26:35,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-19 03:26:35,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:26:35" (1/1) ... [2022-02-19 03:26:35,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:26:35" (1/1) ... [2022-02-19 03:26:35,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:26:35" (1/1) ... [2022-02-19 03:26:35,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:26:35" (1/1) ... [2022-02-19 03:26:35,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:26:35" (1/1) ... [2022-02-19 03:26:35,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:26:35" (1/1) ... [2022-02-19 03:26:35,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:26:35" (1/1) ... [2022-02-19 03:26:35,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-19 03:26:35,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-19 03:26:35,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-19 03:26:35,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-19 03:26:35,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:26:35" (1/1) ... [2022-02-19 03:26:35,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-19 03:26:35,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:26:35,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-19 03:26:35,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-19 03:26:35,331 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-19 03:26:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-19 03:26:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-19 03:26:35,331 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread1 given in one single declaration [2022-02-19 03:26:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure Thread1 [2022-02-19 03:26:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread1 [2022-02-19 03:26:35,332 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-19 03:26:35,363 INFO L234 CfgBuilder]: Building ICFG [2022-02-19 03:26:35,364 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-19 03:26:35,409 INFO L275 CfgBuilder]: Performing block encoding [2022-02-19 03:26:35,414 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-19 03:26:35,414 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-02-19 03:26:35,415 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:26:35 BoogieIcfgContainer [2022-02-19 03:26:35,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-19 03:26:35,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-19 03:26:35,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-19 03:26:35,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-19 03:26:35,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:26:35" (1/2) ... [2022-02-19 03:26:35,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ada7b4c and model type cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 03:26:35, skipping insertion in model container [2022-02-19 03:26:35,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:26:35" (2/2) ... [2022-02-19 03:26:35,424 INFO L111 eAbstractionObserver]: Analyzing ICFG cutoff_test.bpl [2022-02-19 03:26:35,427 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-19 03:26:35,428 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-19 03:26:35,428 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-19 03:26:35,428 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-19 03:26:35,450 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-02-19 03:26:35,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-19 03:26:35,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:26:35,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-19 03:26:35,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-19 03:26:35,530 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-02-19 03:26:35,538 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-02-19 03:26:35,538 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-19 03:26:35,651 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-19 03:26:35,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:26:35,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1119027243, now seen corresponding path program 1 times [2022-02-19 03:26:35,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:26:35,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739372097] [2022-02-19 03:26:35,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:26:35,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:26:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:26:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:26:35,752 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 03:26:35,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739372097] [2022-02-19 03:26:35,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739372097] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-19 03:26:35,753 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-19 03:26:35,753 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-19 03:26:35,754 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202420393] [2022-02-19 03:26:35,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-19 03:26:35,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-19 03:26:35,757 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 03:26:35,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-19 03:26:35,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-19 03:26:35,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:26:35,774 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 03:26:35,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-02-19 03:26:35,775 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:26:35,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 03:26:35,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-19 03:26:35,789 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-19 03:26:35,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:26:35,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1120010346, now seen corresponding path program 1 times [2022-02-19 03:26:35,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:26:35,790 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87295585] [2022-02-19 03:26:35,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:26:35,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:26:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:26:35,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:26:35,815 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 03:26:35,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87295585] [2022-02-19 03:26:35,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87295585] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-19 03:26:35,815 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-19 03:26:35,815 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-19 03:26:35,815 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531362885] [2022-02-19 03:26:35,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-19 03:26:35,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-19 03:26:35,816 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 03:26:35,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-19 03:26:35,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-19 03:26:35,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:26:35,817 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 03:26:35,817 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) [2022-02-19 03:26:35,817 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-19 03:26:35,817 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:26:35,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-19 03:26:35,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:26:35,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-19 03:26:35,846 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-19 03:26:35,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:26:35,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1294287696, now seen corresponding path program 2 times [2022-02-19 03:26:35,847 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:26:35,847 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490577117] [2022-02-19 03:26:35,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:26:35,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:26:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-19 03:26:35,852 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-19 03:26:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-19 03:26:35,863 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-19 03:26:35,863 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-19 03:26:35,864 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-02-19 03:26:35,865 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-02-19 03:26:35,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-19 03:26:35,891 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1] [2022-02-19 03:26:35,905 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-19 03:26:35,905 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-19 03:26:35,912 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 03:26:35 BasicIcfg [2022-02-19 03:26:35,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-19 03:26:35,913 INFO L158 Benchmark]: Toolchain (without parser) took 716.13ms. Allocated memory was 200.3MB in the beginning and 289.4MB in the end (delta: 89.1MB). Free memory was 159.6MB in the beginning and 263.3MB in the end (delta: -103.7MB). Peak memory consumption was 6.6MB. Max. memory is 8.0GB. [2022-02-19 03:26:35,913 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 160.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-19 03:26:35,914 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.87ms. Allocated memory is still 200.3MB. Free memory was 159.5MB in the beginning and 157.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-19 03:26:35,914 INFO L158 Benchmark]: Boogie Preprocessor took 12.62ms. Allocated memory is still 200.3MB. Free memory was 157.9MB in the beginning and 157.0MB in the end (delta: 917.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-19 03:26:35,914 INFO L158 Benchmark]: RCFGBuilder took 181.79ms. Allocated memory is still 200.3MB. Free memory was 157.0MB in the beginning and 149.2MB in the end (delta: 7.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-19 03:26:35,932 INFO L158 Benchmark]: TraceAbstraction took 495.73ms. Allocated memory was 200.3MB in the beginning and 289.4MB in the end (delta: 89.1MB). Free memory was 148.7MB in the beginning and 263.3MB in the end (delta: -114.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-19 03:26:35,936 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 0.12ms. Allocated memory is still 200.3MB. Free memory is still 160.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.87ms. Allocated memory is still 200.3MB. Free memory was 159.5MB in the beginning and 157.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.62ms. Allocated memory is still 200.3MB. Free memory was 157.9MB in the beginning and 157.0MB in the end (delta: 917.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 181.79ms. Allocated memory is still 200.3MB. Free memory was 157.0MB in the beginning and 149.2MB in the end (delta: 7.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 495.73ms. Allocated memory was 200.3MB in the beginning and 289.4MB in the end (delta: 89.1MB). Free memory was 148.7MB in the beginning and 263.3MB in the end (delta: -114.5MB). 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: 56, positive: 37, positive conditional: 17, positive unconditional: 20, negative: 19, negative conditional: 16, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 41, positive: 37, positive conditional: 17, positive unconditional: 20, negative: 4, negative conditional: 1, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 41, positive: 37, positive conditional: 17, positive unconditional: 20, negative: 4, negative conditional: 1, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 43, positive: 37, positive conditional: 9, positive unconditional: 28, negative: 6, negative conditional: 2, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 43, positive: 37, positive conditional: 9, positive unconditional: 28, negative: 6, negative conditional: 2, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 43, positive: 37, positive conditional: 9, positive unconditional: 28, negative: 6, negative conditional: 2, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 26, positive: 21, positive conditional: 1, positive unconditional: 20, negative: 5, negative conditional: 2, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 26, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 2, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 49, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 49, negative conditional: 5, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 43, positive: 16, positive conditional: 8, positive unconditional: 8, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 26, unknown conditional: 3, unknown unconditional: 23] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 21, Positive conditional cache size: 1, Positive unconditional cache size: 20, Negative cache size: 5, Negative conditional cache size: 2, Negative unconditional cache size: 3, Eliminated conditions: 0, Maximal queried relation: 2, Independence queries for same thread: 15 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 13, Number of trivial persistent sets: 13, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 23, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 56, positive: 37, positive conditional: 17, positive unconditional: 20, negative: 19, negative conditional: 16, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 41, positive: 37, positive conditional: 17, positive unconditional: 20, negative: 4, negative conditional: 1, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 41, positive: 37, positive conditional: 17, positive unconditional: 20, negative: 4, negative conditional: 1, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 43, positive: 37, positive conditional: 9, positive unconditional: 28, negative: 6, negative conditional: 2, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 43, positive: 37, positive conditional: 9, positive unconditional: 28, negative: 6, negative conditional: 2, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 43, positive: 37, positive conditional: 9, positive unconditional: 28, negative: 6, negative conditional: 2, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 26, positive: 21, positive conditional: 1, positive unconditional: 20, negative: 5, negative conditional: 2, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 26, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 2, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 49, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 49, negative conditional: 5, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 43, positive: 16, positive conditional: 8, positive unconditional: 8, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 26, unknown conditional: 3, unknown unconditional: 23] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 21, Positive conditional cache size: 1, Positive unconditional cache size: 20, Negative cache size: 5, Negative conditional cache size: 2, Negative unconditional cache size: 3, Eliminated conditions: 0, Maximal queried relation: 2, Independence queries for same thread: 15 - 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] FORK 0 fork 1 Thread1(); [L22] 0 x := 0; VAL [x=0] [L37] 1 x := x + 1; VAL [x=1] [L23] 0 x := 2 * x; VAL [x=2] [L25] JOIN 1 join 1; VAL [x=2] [L26] 0 assert x != 2; VAL [x=2] - UnprovableResult [Line: 17]: 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 2, 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: 7, 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, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-02-19 03:26:35,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-02-19 03:26:36,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...