/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_longest.line713.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-04 00:47:56,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-04 00:47:56,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-04 00:47:56,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-04 00:47:56,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-04 00:47:56,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-04 00:47:56,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-04 00:47:56,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-04 00:47:56,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-04 00:47:56,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-04 00:47:56,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-04 00:47:56,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-04 00:47:56,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-04 00:47:56,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-04 00:47:56,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-04 00:47:56,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-04 00:47:56,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-04 00:47:56,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-04 00:47:56,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-04 00:47:56,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-04 00:47:56,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-04 00:47:56,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-04 00:47:56,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-04 00:47:56,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-04 00:47:56,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-04 00:47:56,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-04 00:47:56,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-04 00:47:56,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-04 00:47:56,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-04 00:47:56,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-04 00:47:56,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-04 00:47:56,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-04 00:47:56,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-04 00:47:56,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-04 00:47:56,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-04 00:47:56,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-04 00:47:56,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-04 00:47:56,159 INFO L138 SettingsManager]: * Use SBE=true [2022-10-04 00:47:56,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-04 00:47:56,159 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-04 00:47:56,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-04 00:47:56,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-04 00:47:56,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-04 00:47:56,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-04 00:47:56,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-04 00:47:56,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-04 00:47:56,160 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-04 00:47:56,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-04 00:47:56,160 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-04 00:47:56,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-04 00:47:56,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-04 00:47:56,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-04 00:47:56,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-04 00:47:56,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-04 00:47:56,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-04 00:47:56,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-04 00:47:56,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-04 00:47:56,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-04 00:47:56,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-04 00:47:56,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-04 00:47:56,162 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-04 00:47:56,162 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-04 00:47:56,162 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-04 00:47:56,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-04 00:47:56,162 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-04 00:47:56,162 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-04 00:47:56,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-04 00:47:56,163 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-04 00:47:56,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-04 00:47:56,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-04 00:47:56,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-04 00:47:56,381 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-04 00:47:56,382 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-04 00:47:56,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/queue_longest.line713.bpl [2022-10-04 00:47:56,383 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/queue_longest.line713.bpl' [2022-10-04 00:47:56,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-04 00:47:56,435 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-04 00:47:56,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-04 00:47:56,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-04 00:47:56,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-04 00:47:56,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "queue_longest.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:47:56" (1/1) ... [2022-10-04 00:47:56,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "queue_longest.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:47:56" (1/1) ... [2022-10-04 00:47:56,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "queue_longest.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:47:56" (1/1) ... [2022-10-04 00:47:56,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "queue_longest.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:47:56" (1/1) ... [2022-10-04 00:47:56,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "queue_longest.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:47:56" (1/1) ... [2022-10-04 00:47:56,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "queue_longest.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:47:56" (1/1) ... [2022-10-04 00:47:56,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "queue_longest.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:47:56" (1/1) ... [2022-10-04 00:47:56,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-04 00:47:56,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-04 00:47:56,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-04 00:47:56,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-04 00:47:56,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "queue_longest.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:47:56" (1/1) ... [2022-10-04 00:47:56,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-04 00:47:56,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:47:56,566 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 00:47:56,572 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 00:47:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-10-04 00:47:56,619 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-10-04 00:47:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-10-04 00:47:56,619 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-10-04 00:47:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-04 00:47:56,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-04 00:47:56,620 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 00:47:56,732 INFO L234 CfgBuilder]: Building ICFG [2022-10-04 00:47:56,733 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-04 00:47:57,249 INFO L275 CfgBuilder]: Performing block encoding [2022-10-04 00:47:57,264 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-04 00:47:57,265 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-04 00:47:57,267 INFO L202 PluginConnector]: Adding new model queue_longest.line713.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:47:57 BoogieIcfgContainer [2022-10-04 00:47:57,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-04 00:47:57,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-04 00:47:57,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-04 00:47:57,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-04 00:47:57,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "queue_longest.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:47:56" (1/2) ... [2022-10-04 00:47:57,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a27dc53 and model type queue_longest.line713.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 12:47:57, skipping insertion in model container [2022-10-04 00:47:57,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "queue_longest.line713.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:47:57" (2/2) ... [2022-10-04 00:47:57,273 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.line713.bpl [2022-10-04 00:47:57,278 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-04 00:47:57,286 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-04 00:47:57,286 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-04 00:47:57,286 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-04 00:47:57,451 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-04 00:47:57,501 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 00:47:57,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 00:47:57,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:47:57,503 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 00:47:57,503 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 00:47:57,525 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 00:47:57,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-04 00:47:57,535 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;@70a5eaee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 00:47:57,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 00:47:57,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-04 00:47:57,587 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-04 00:47:57,589 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (1/4) [2022-10-04 00:47:57,596 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 00:47:57,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 00:47:57,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:47:57,597 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 00:47:57,598 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 00:47:57,606 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 00:47:57,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-04 00:47:57,607 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;@70a5eaee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 00:47:57,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 00:47:58,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-04 00:47:58,030 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-04 00:47:58,033 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/4) [2022-10-04 00:47:58,041 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 00:47:58,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 00:47:58,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:47:58,092 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 00:47:58,093 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 00:47:58,096 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 00:47:58,096 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2Err0ASSERT_VIOLATIONASSERT ======== [2022-10-04 00:47:58,097 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;@70a5eaee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 00:47:58,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 00:47:58,097 WARN L124 DepthFirstTraversal]: Depth first traversal did not find any initial state. Returning directly. [2022-10-04 00:47:58,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-04 00:47:58,098 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-04 00:47:58,098 INFO L307 ceAbstractionStarter]: Result for error location t2Err0ASSERT_VIOLATIONASSERT was SAFE (3/4) [2022-10-04 00:47:58,102 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 00:47:58,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 00:47:58,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:47:58,104 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 00:47:58,105 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 00:47:58,107 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 00:47:58,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2Err0ASSERT_VIOLATIONASSERT ======== [2022-10-04 00:47:58,107 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;@70a5eaee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 00:47:58,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 00:47:58,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [t2Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:47:58,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:47:58,205 INFO L85 PathProgramCache]: Analyzing trace with hash 22986173, now seen corresponding path program 1 times [2022-10-04 00:47:58,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:47:58,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202137815] [2022-10-04 00:47:58,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:47:58,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:47:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:47:58,485 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 00:47:58,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:47:58,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202137815] [2022-10-04 00:47:58,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202137815] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 00:47:58,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 00:47:58,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-04 00:47:58,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017917286] [2022-10-04 00:47:58,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 00:47:58,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-04 00:47:58,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:47:58,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-04 00:47:58,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-04 00:47:58,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:47:58,510 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:47:58,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 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 00:47:58,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:47:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:47:58,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-04 00:47:58,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [t2Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:47:58,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:47:58,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1543168718, now seen corresponding path program 1 times [2022-10-04 00:47:58,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:47:58,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110589853] [2022-10-04 00:47:58,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:47:58,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:47:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:47:58,777 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 00:47:58,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:47:58,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110589853] [2022-10-04 00:47:58,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110589853] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 00:47:58,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 00:47:58,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-04 00:47:58,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266762653] [2022-10-04 00:47:58,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 00:47:58,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-04 00:47:58,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:47:58,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-04 00:47:58,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-04 00:47:58,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:47:58,782 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:47:58,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 00:47:58,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:47:58,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:47:59,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:47:59,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 00:47:59,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-04 00:47:59,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [t2Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:47:59,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:47:59,393 INFO L85 PathProgramCache]: Analyzing trace with hash 205708584, now seen corresponding path program 1 times [2022-10-04 00:47:59,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:47:59,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832224687] [2022-10-04 00:47:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:47:59,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:47:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:47:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 00:47:59,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:47:59,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832224687] [2022-10-04 00:47:59,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832224687] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 00:47:59,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 00:47:59,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-04 00:47:59,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514006760] [2022-10-04 00:47:59,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 00:47:59,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-04 00:47:59,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:47:59,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-04 00:47:59,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-04 00:47:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:47:59,581 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:47:59,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 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 00:47:59,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:47:59,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 00:47:59,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:48:00,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:48:00,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 00:48:00,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-04 00:48:00,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-04 00:48:00,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [t2Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:48:00,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:48:00,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1900793741, now seen corresponding path program 1 times [2022-10-04 00:48:00,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:48:00,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244723556] [2022-10-04 00:48:00,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:48:00,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:48:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:48:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-10-04 00:48:00,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:48:00,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244723556] [2022-10-04 00:48:00,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244723556] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 00:48:00,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 00:48:00,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-04 00:48:00,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679401215] [2022-10-04 00:48:00,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 00:48:00,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-04 00:48:00,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:48:00,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-04 00:48:00,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-04 00:48:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:48:00,884 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:48:00,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 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 00:48:00,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:48:00,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 00:48:00,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-10-04 00:48:00,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:48:01,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:48:01,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 00:48:01,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-04 00:48:01,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-04 00:48:01,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-04 00:48:01,204 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [t2Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:48:01,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:48:01,205 INFO L85 PathProgramCache]: Analyzing trace with hash -375724043, now seen corresponding path program 2 times [2022-10-04 00:48:01,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:48:01,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090489868] [2022-10-04 00:48:01,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:48:01,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:48:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:48:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-10-04 00:48:01,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:48:01,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090489868] [2022-10-04 00:48:01,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090489868] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 00:48:01,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 00:48:01,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-04 00:48:01,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425073867] [2022-10-04 00:48:01,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 00:48:01,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-04 00:48:01,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:48:01,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-04 00:48:01,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-04 00:48:01,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:48:01,320 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:48:01,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 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 00:48:01,320 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:48:01,320 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 00:48:01,320 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-10-04 00:48:01,321 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-10-04 00:48:01,321 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:48:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:48:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 00:48:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-04 00:48:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-04 00:48:01,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-04 00:48:01,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-04 00:48:01,551 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [t2Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:48:01,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:48:01,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1855771683, now seen corresponding path program 1 times [2022-10-04 00:48:01,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:48:01,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75498232] [2022-10-04 00:48:01,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:48:01,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:48:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:48:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-10-04 00:48:01,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:48:01,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75498232] [2022-10-04 00:48:01,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75498232] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 00:48:01,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 00:48:01,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-04 00:48:01,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037640779] [2022-10-04 00:48:01,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 00:48:01,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-04 00:48:01,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:48:01,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-04 00:48:01,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-10-04 00:48:01,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:48:01,962 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:48:01,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 44.90909090909091) internal successors, (494), 12 states have internal predecessors, (494), 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 00:48:01,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:48:01,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 00:48:01,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-10-04 00:48:01,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-10-04 00:48:01,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-04 00:48:01,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.