/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/queue.line723.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-09-30 05:59:22,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-30 05:59:22,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-30 05:59:22,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-30 05:59:22,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-30 05:59:22,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-30 05:59:22,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-30 05:59:22,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-30 05:59:22,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-30 05:59:22,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-30 05:59:22,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-30 05:59:22,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-30 05:59:22,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-30 05:59:22,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-30 05:59:22,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-30 05:59:22,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-30 05:59:22,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-30 05:59:22,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-30 05:59:22,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-30 05:59:22,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-30 05:59:22,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-30 05:59:22,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-30 05:59:22,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-30 05:59:22,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-30 05:59:22,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-30 05:59:22,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-30 05:59:22,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-30 05:59:22,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-30 05:59:22,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-09-30 05:59:22,606 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-30 05:59:22,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-30 05:59:22,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-30 05:59:22,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-30 05:59:22,612 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-30 05:59:22,613 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-30 05:59:22,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-30 05:59:22,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-30 05:59:22,613 INFO L138 SettingsManager]: * Use SBE=true [2022-09-30 05:59:22,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-30 05:59:22,614 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-30 05:59:22,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-30 05:59:22,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-30 05:59:22,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-30 05:59:22,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-30 05:59:22,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-30 05:59:22,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-30 05:59:22,615 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-30 05:59:22,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-30 05:59:22,615 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-30 05:59:22,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-30 05:59:22,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-30 05:59:22,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-30 05:59:22,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-30 05:59:22,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-30 05:59:22,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-30 05:59:22,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-30 05:59:22,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-30 05:59:22,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-30 05:59:22,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-30 05:59:22,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-30 05:59:22,617 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-30 05:59:22,617 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-09-30 05:59:22,617 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-09-30 05:59:22,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-30 05:59:22,618 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-09-30 05:59:22,618 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-09-30 05:59:22,618 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-09-30 05:59:22,618 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-30 05:59:22,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-30 05:59:22,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-30 05:59:22,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-30 05:59:22,837 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-30 05:59:22,846 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-30 05:59:22,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/queue.line723.bpl [2022-09-30 05:59:22,848 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/queue.line723.bpl' [2022-09-30 05:59:22,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-30 05:59:22,900 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-09-30 05:59:22,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-30 05:59:22,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-30 05:59:22,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-30 05:59:22,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "queue.line723.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:59:22" (1/1) ... [2022-09-30 05:59:22,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "queue.line723.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:59:22" (1/1) ... [2022-09-30 05:59:22,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "queue.line723.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:59:22" (1/1) ... [2022-09-30 05:59:22,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "queue.line723.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:59:22" (1/1) ... [2022-09-30 05:59:22,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "queue.line723.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:59:22" (1/1) ... [2022-09-30 05:59:22,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "queue.line723.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:59:22" (1/1) ... [2022-09-30 05:59:22,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "queue.line723.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:59:22" (1/1) ... [2022-09-30 05:59:22,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-30 05:59:22,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-30 05:59:22,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-30 05:59:22,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-30 05:59:22,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "queue.line723.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:59:22" (1/1) ... [2022-09-30 05:59:23,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-30 05:59:23,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 05:59:23,022 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) [2022-09-30 05:59:23,074 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 [2022-09-30 05:59:23,099 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-09-30 05:59:23,099 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-09-30 05:59:23,099 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-09-30 05:59:23,099 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-09-30 05:59:23,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-30 05:59:23,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-30 05:59:23,100 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-30 05:59:23,260 INFO L234 CfgBuilder]: Building ICFG [2022-09-30 05:59:23,262 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-30 05:59:23,719 INFO L275 CfgBuilder]: Performing block encoding [2022-09-30 05:59:23,737 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-30 05:59:23,737 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-30 05:59:23,739 INFO L202 PluginConnector]: Adding new model queue.line723.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 05:59:23 BoogieIcfgContainer [2022-09-30 05:59:23,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-30 05:59:23,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-30 05:59:23,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-30 05:59:23,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-30 05:59:23,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "queue.line723.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:59:22" (1/2) ... [2022-09-30 05:59:23,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d6dc8d and model type queue.line723.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 05:59:23, skipping insertion in model container [2022-09-30 05:59:23,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "queue.line723.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 05:59:23" (2/2) ... [2022-09-30 05:59:23,763 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.line723.bpl [2022-09-30 05:59:23,769 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-30 05:59:23,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-30 05:59:23,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-30 05:59:23,776 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-30 05:59:23,918 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-30 05:59:23,968 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 05:59:23,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 05:59:23,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 05:59:23,971 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) [2022-09-30 05:59:23,987 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 [2022-09-30 05:59:24,032 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 05:59:24,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 05:59:24,045 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;@72e5ffb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 05:59:24,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 05:59:24,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 05:59:24,615 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-09-30 05:59:24,617 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (1/4) [2022-09-30 05:59:24,623 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 05:59:24,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 05:59:24,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 05:59:24,645 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) [2022-09-30 05:59:24,650 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 05:59:24,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 05:59:24,652 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;@72e5ffb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 05:59:24,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 05:59:24,656 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 [2022-09-30 05:59:24,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 05:59:24,671 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-09-30 05:59:24,671 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/4) [2022-09-30 05:59:24,675 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 05:59:24,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 05:59:24,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 05:59:24,725 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) [2022-09-30 05:59:24,726 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 [2022-09-30 05:59:24,729 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 05:59:24,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2Err0ASSERT_VIOLATIONASSERT ======== [2022-09-30 05:59:24,730 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;@72e5ffb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 05:59:24,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 05:59:24,730 WARN L124 DepthFirstTraversal]: Depth first traversal did not find any initial state. Returning directly. [2022-09-30 05:59:24,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-09-30 05:59:24,730 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-09-30 05:59:24,731 INFO L307 ceAbstractionStarter]: Result for error location t2Err0ASSERT_VIOLATIONASSERT was SAFE (3/4) [2022-09-30 05:59:24,734 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 05:59:24,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 05:59:24,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 05:59:24,737 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) [2022-09-30 05:59:24,739 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 [2022-09-30 05:59:24,742 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 05:59:24,742 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2Err0ASSERT_VIOLATIONASSERT ======== [2022-09-30 05:59:24,743 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;@72e5ffb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 05:59:24,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 05:59:25,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [t2Err0ASSERT_VIOLATIONASSERT] === [2022-09-30 05:59:25,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 05:59:25,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1057481550, now seen corresponding path program 1 times [2022-09-30 05:59:25,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 05:59:25,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82210263] [2022-09-30 05:59:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 05:59:25,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 05:59:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 05:59:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2022-09-30 05:59:25,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 05:59:25,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82210263] [2022-09-30 05:59:25,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82210263] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 05:59:25,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 05:59:25,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-30 05:59:25,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864551655] [2022-09-30 05:59:25,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 05:59:25,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-30 05:59:25,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 05:59:25,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-30 05:59:25,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-30 05:59:25,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 05:59:25,884 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 05:59:25,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 288.5) internal successors, (577), 2 states have internal predecessors, (577), 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) [2022-09-30 05:59:25,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 05:59:26,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 05:59:26,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-30 05:59:26,571 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [t2Err0ASSERT_VIOLATIONASSERT] === [2022-09-30 05:59:26,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 05:59:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1948602513, now seen corresponding path program 1 times [2022-09-30 05:59:26,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 05:59:26,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124746720] [2022-09-30 05:59:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 05:59:26,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 05:59:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 05:59:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1290 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2022-09-30 05:59:27,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 05:59:27,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124746720] [2022-09-30 05:59:27,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124746720] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 05:59:27,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 05:59:27,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-30 05:59:27,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44127724] [2022-09-30 05:59:27,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 05:59:27,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-30 05:59:27,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 05:59:27,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-30 05:59:27,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-30 05:59:27,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 05:59:27,032 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 05:59:27,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 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) [2022-09-30 05:59:27,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 05:59:27,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 05:59:27,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 05:59:27,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-30 05:59:27,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-30 05:59:27,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [t2Err0ASSERT_VIOLATIONASSERT] === [2022-09-30 05:59:27,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 05:59:27,842 INFO L85 PathProgramCache]: Analyzing trace with hash -618573275, now seen corresponding path program 1 times [2022-09-30 05:59:27,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 05:59:27,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294513715] [2022-09-30 05:59:27,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 05:59:27,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 05:59:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 05:59:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-09-30 05:59:28,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 05:59:28,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294513715] [2022-09-30 05:59:28,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294513715] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 05:59:28,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621478362] [2022-09-30 05:59:28,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 05:59:28,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 05:59:28,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 05:59:28,034 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) [2022-09-30 05:59:28,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-30 05:59:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 05:59:28,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 123 conjunts are in the unsatisfiable core [2022-09-30 05:59:28,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 05:59:28,369 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 [2022-09-30 05:59:28,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-09-30 05:59:28,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-30 05:59:28,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-09-30 05:59:29,373 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-30 05:59:29,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2022-09-30 05:59:29,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-09-30 05:59:29,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 [2022-09-30 05:59:29,753 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-30 05:59:29,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-09-30 05:59:29,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-09-30 05:59:29,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-09-30 05:59:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 05:59:30,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 05:59:30,524 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-09-30 05:59:30,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2022-09-30 05:59:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 05:59:31,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621478362] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 05:59:31,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 05:59:31,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 37, 15] total 53 [2022-09-30 05:59:31,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119749077] [2022-09-30 05:59:31,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 05:59:31,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-09-30 05:59:31,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 05:59:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-09-30 05:59:31,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2581, Unknown=2, NotChecked=0, Total=2862 [2022-09-30 05:59:31,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 05:59:31,669 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 05:59:31,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 15.264150943396226) internal successors, (809), 54 states have internal predecessors, (809), 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) [2022-09-30 05:59:31,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 05:59:31,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-09-30 05:59:31,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.