/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/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/ring_2w1r-1.line438.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-04 02:31:02,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-04 02:31:02,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-04 02:31:02,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-04 02:31:02,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-04 02:31:02,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-04 02:31:02,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-04 02:31:02,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-04 02:31:02,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-04 02:31:02,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-04 02:31:02,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-04 02:31:02,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-04 02:31:02,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-04 02:31:02,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-04 02:31:02,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-04 02:31:02,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-04 02:31:02,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-04 02:31:02,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-04 02:31:02,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-04 02:31:02,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-04 02:31:02,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-04 02:31:02,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-04 02:31:02,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-04 02:31:02,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-04 02:31:02,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-04 02:31:02,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-04 02:31:02,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-04 02:31:02,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-04 02:31:02,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-04 02:31:02,631 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-04 02:31:02,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-04 02:31:02,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-04 02:31:02,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-04 02:31:02,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-04 02:31:02,632 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-04 02:31:02,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-04 02:31:02,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-04 02:31:02,633 INFO L138 SettingsManager]: * Use SBE=true [2022-10-04 02:31:02,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-04 02:31:02,633 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-04 02:31:02,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-04 02:31:02,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-04 02:31:02,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-04 02:31:02,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-04 02:31:02,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-04 02:31:02,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-04 02:31:02,634 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-04 02:31:02,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-04 02:31:02,634 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-04 02:31:02,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-04 02:31:02,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-04 02:31:02,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-04 02:31:02,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-04 02:31:02,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-04 02:31:02,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-04 02:31:02,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-04 02:31:02,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-04 02:31:02,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-04 02:31:02,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-04 02:31:02,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-04 02:31:02,636 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-04 02:31:02,636 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-04 02:31:02,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-04 02:31:02,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-04 02:31:02,636 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-04 02:31:02,637 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-04 02:31:02,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-04 02:31:02,637 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-04 02:31:02,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-04 02:31:02,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-04 02:31:02,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-04 02:31:02,873 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-04 02:31:02,874 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-04 02:31:02,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/ring_2w1r-1.line438.bpl [2022-10-04 02:31:02,875 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/ring_2w1r-1.line438.bpl' [2022-10-04 02:31:02,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-04 02:31:02,916 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-04 02:31:02,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-04 02:31:02,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-04 02:31:02,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-04 02:31:02,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:31:02" (1/1) ... [2022-10-04 02:31:02,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:31:02" (1/1) ... [2022-10-04 02:31:02,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:31:02" (1/1) ... [2022-10-04 02:31:02,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:31:02" (1/1) ... [2022-10-04 02:31:02,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:31:02" (1/1) ... [2022-10-04 02:31:02,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:31:02" (1/1) ... [2022-10-04 02:31:02,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:31:02" (1/1) ... [2022-10-04 02:31:02,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-04 02:31:02,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-04 02:31:02,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-04 02:31:02,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-04 02:31:02,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:31:02" (1/1) ... [2022-10-04 02:31:02,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-04 02:31:02,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 02:31:03,010 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) [2022-10-04 02:31:03,022 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 [2022-10-04 02:31:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-10-04 02:31:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-10-04 02:31:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-10-04 02:31:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-10-04 02:31:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-04 02:31:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-04 02:31:03,050 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-04 02:31:03,204 INFO L234 CfgBuilder]: Building ICFG [2022-10-04 02:31:03,205 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-04 02:31:03,727 INFO L275 CfgBuilder]: Performing block encoding [2022-10-04 02:31:03,744 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-04 02:31:03,744 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-04 02:31:03,747 INFO L202 PluginConnector]: Adding new model ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:31:03 BoogieIcfgContainer [2022-10-04 02:31:03,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-04 02:31:03,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-04 02:31:03,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-04 02:31:03,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-04 02:31:03,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:31:02" (1/2) ... [2022-10-04 02:31:03,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46122525 and model type ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 02:31:03, skipping insertion in model container [2022-10-04 02:31:03,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:31:03" (2/2) ... [2022-10-04 02:31:03,754 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.line438.bpl [2022-10-04 02:31:03,760 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-04 02:31:03,767 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-04 02:31:03,767 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-04 02:31:03,767 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-04 02:31:03,894 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-04 02:31:03,952 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 02:31:03,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 02:31:03,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 02:31:03,956 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) [2022-10-04 02:31:03,958 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 [2022-10-04 02:31:03,995 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 02:31:04,005 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == reader_twoErr0ASSERT_VIOLATIONASSERT ======== [2022-10-04 02:31:04,012 INFO L357 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, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d812fe9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 02:31:04,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 02:31:04,015 WARN L124 DepthFirstTraversal]: Depth first traversal did not find any initial state. Returning directly. [2022-10-04 02:31:04,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location reader_twoErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-04 02:31:04,031 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-04 02:31:04,035 INFO L307 ceAbstractionStarter]: Result for error location reader_twoErr0ASSERT_VIOLATIONASSERT was SAFE (1/4) [2022-10-04 02:31:04,048 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 02:31:04,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 02:31:04,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 02:31:04,058 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-04 02:31:04,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2022-10-04 02:31:04,097 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 02:31:04,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-04 02:31:04,098 INFO L357 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, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d812fe9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 02:31:04,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 02:31:04,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-04 02:31:04,577 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-04 02:31:04,581 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/4) [2022-10-04 02:31:04,592 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 02:31:04,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 02:31:04,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 02:31:04,624 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) [2022-10-04 02:31:04,625 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 [2022-10-04 02:31:04,628 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 02:31:04,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-04 02:31:04,629 INFO L357 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, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d812fe9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 02:31:04,629 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 02:31:04,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-04 02:31:04,635 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-04 02:31:04,635 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (3/4) [2022-10-04 02:31:04,639 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 02:31:04,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 02:31:04,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 02:31:04,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-04 02:31:04,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2022-10-04 02:31:04,657 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 02:31:04,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == reader_twoErr0ASSERT_VIOLATIONASSERT ======== [2022-10-04 02:31:04,658 INFO L357 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, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d812fe9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 02:31:04,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 02:31:06,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reader_twoErr0ASSERT_VIOLATIONASSERT === [reader_twoErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 02:31:06,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 02:31:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1081601776, now seen corresponding path program 1 times [2022-10-04 02:31:06,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 02:31:06,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660671827] [2022-10-04 02:31:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 02:31:06,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 02:31:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 02:31:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 02:31:06,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 02:31:06,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660671827] [2022-10-04 02:31:06,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660671827] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 02:31:06,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 02:31:06,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-04 02:31:06,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721225858] [2022-10-04 02:31:06,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 02:31:06,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-04 02:31:06,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 02:31:06,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-04 02:31:06,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-04 02:31:06,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:06,791 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 02:31:06,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 152.5) internal successors, (305), 2 states have internal predecessors, (305), 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) [2022-10-04 02:31:06,792 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:08,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:08,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-04 02:31:08,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reader_twoErr0ASSERT_VIOLATIONASSERT === [reader_twoErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 02:31:08,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 02:31:08,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1526745871, now seen corresponding path program 1 times [2022-10-04 02:31:08,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 02:31:08,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680649246] [2022-10-04 02:31:08,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 02:31:08,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 02:31:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 02:31:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 02:31:09,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 02:31:09,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680649246] [2022-10-04 02:31:09,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680649246] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 02:31:09,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 02:31:09,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-04 02:31:09,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107694931] [2022-10-04 02:31:09,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 02:31:09,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-04 02:31:09,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 02:31:09,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-04 02:31:09,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-04 02:31:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:09,095 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 02:31:09,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 43.285714285714285) internal successors, (303), 8 states have internal predecessors, (303), 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) [2022-10-04 02:31:09,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:09,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:16,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:16,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-04 02:31:16,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-04 02:31:16,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reader_twoErr0ASSERT_VIOLATIONASSERT === [reader_twoErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 02:31:16,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 02:31:16,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1245118047, now seen corresponding path program 1 times [2022-10-04 02:31:16,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 02:31:16,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132367805] [2022-10-04 02:31:16,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 02:31:16,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 02:31:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 02:31:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 5811 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 4808 trivial. 0 not checked. [2022-10-04 02:31:16,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 02:31:16,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132367805] [2022-10-04 02:31:16,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132367805] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 02:31:16,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 02:31:16,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-04 02:31:16,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94390673] [2022-10-04 02:31:16,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 02:31:16,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-04 02:31:16,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 02:31:16,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-04 02:31:16,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-04 02:31:16,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:16,722 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 02:31:16,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 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) [2022-10-04 02:31:16,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:16,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-04 02:31:16,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:28,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:28,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-04 02:31:28,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-04 02:31:28,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-04 02:31:28,484 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reader_twoErr0ASSERT_VIOLATIONASSERT === [reader_twoErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 02:31:28,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 02:31:28,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1076368673, now seen corresponding path program 1 times [2022-10-04 02:31:28,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 02:31:28,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020844756] [2022-10-04 02:31:28,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 02:31:28,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 02:31:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 02:31:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1308 backedges. 662 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2022-10-04 02:31:28,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 02:31:28,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020844756] [2022-10-04 02:31:28,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020844756] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 02:31:28,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 02:31:28,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-04 02:31:28,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809255423] [2022-10-04 02:31:28,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 02:31:28,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-04 02:31:28,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 02:31:28,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-04 02:31:28,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-04 02:31:28,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:28,710 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 02:31:28,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 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) [2022-10-04 02:31:28,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:28,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-04 02:31:28,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-04 02:31:28,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:51,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:51,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-04 02:31:51,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-04 02:31:51,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 02:31:51,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-04 02:31:51,058 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reader_twoErr0ASSERT_VIOLATIONASSERT === [reader_twoErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 02:31:51,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 02:31:51,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1575160026, now seen corresponding path program 1 times [2022-10-04 02:31:51,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 02:31:51,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210964937] [2022-10-04 02:31:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 02:31:51,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 02:31:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 02:31:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2741 backedges. 1962 proven. 1 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked. [2022-10-04 02:31:51,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 02:31:51,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210964937] [2022-10-04 02:31:51,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210964937] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-04 02:31:51,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813687243] [2022-10-04 02:31:51,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 02:31:51,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 02:31:51,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 02:31:51,515 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-04 02:31:51,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-04 02:31:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 02:31:51,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 2657 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-04 02:31:51,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-04 02:31:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2741 backedges. 1962 proven. 1 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked. [2022-10-04 02:31:52,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-04 02:31:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2741 backedges. 1962 proven. 1 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked. [2022-10-04 02:31:52,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813687243] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-04 02:31:52,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-04 02:31:52,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-10-04 02:31:52,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044394745] [2022-10-04 02:31:52,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-04 02:31:52,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-04 02:31:52,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 02:31:52,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-04 02:31:52,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-04 02:31:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:52,824 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 02:31:52,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 167.71428571428572) internal successors, (1174), 7 states have internal predecessors, (1174), 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) [2022-10-04 02:31:52,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:31:52,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-04 02:31:52,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-04 02:31:52,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 02:31:52,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:33:22,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:33:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-04 02:33:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-04 02:33:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 02:33:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-04 02:33:22,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-04 02:33:22,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 02:33:22,908 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reader_twoErr0ASSERT_VIOLATIONASSERT === [reader_twoErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 02:33:22,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 02:33:22,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1976828720, now seen corresponding path program 1 times [2022-10-04 02:33:22,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 02:33:22,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39755312] [2022-10-04 02:33:22,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 02:33:22,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 02:33:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 02:33:24,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3111 backedges. 180 proven. 10 refuted. 0 times theorem prover too weak. 2921 trivial. 0 not checked. [2022-10-04 02:33:24,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 02:33:24,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39755312] [2022-10-04 02:33:24,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39755312] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-04 02:33:24,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905489770] [2022-10-04 02:33:24,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 02:33:24,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 02:33:24,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 02:33:24,148 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-04 02:33:24,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-04 02:33:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 02:33:24,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 2793 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-04 02:33:24,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-04 02:33:24,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-04 02:33:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3111 backedges. 180 proven. 10 refuted. 0 times theorem prover too weak. 2921 trivial. 0 not checked. [2022-10-04 02:33:27,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-04 02:33:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3111 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 2921 trivial. 0 not checked. [2022-10-04 02:33:31,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905489770] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-04 02:33:31,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-04 02:33:31,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-10-04 02:33:31,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544739286] [2022-10-04 02:33:31,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-04 02:33:31,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-04 02:33:31,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 02:33:31,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-04 02:33:31,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-10-04 02:33:31,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:33:31,214 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 02:33:31,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 44.88235294117647) internal successors, (763), 18 states have internal predecessors, (763), 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) [2022-10-04 02:33:31,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:33:31,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-04 02:33:31,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-04 02:33:31,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 02:33:31,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-04 02:33:31,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.