/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_ERROR_LOCATION --traceabstraction.trace.refinement.strategy BADGER -s ../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chunk12/ring_2w1r-1.line438.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-e57bdd3-m [2022-10-21 10:15:40,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-21 10:15:40,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-21 10:15:40,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-21 10:15:40,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-21 10:15:40,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-21 10:15:40,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-21 10:15:40,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-21 10:15:40,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-21 10:15:40,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-21 10:15:40,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-21 10:15:40,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-21 10:15:40,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-21 10:15:40,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-21 10:15:40,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-21 10:15:40,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-21 10:15:40,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-21 10:15:40,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-21 10:15:40,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-21 10:15:40,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-21 10:15:40,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-21 10:15:40,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-21 10:15:40,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-21 10:15:40,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-21 10:15:40,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-21 10:15:40,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-21 10:15:40,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-21 10:15:40,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-21 10:15:40,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-21 10:15:40,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-10-21 10:15:40,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-21 10:15:40,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-21 10:15:40,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-21 10:15:40,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-21 10:15:40,937 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-21 10:15:40,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-21 10:15:40,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-21 10:15:40,938 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-21 10:15:40,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-21 10:15:40,939 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-21 10:15:40,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-21 10:15:40,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-21 10:15:40,941 INFO L138 SettingsManager]: * Use SBE=true [2022-10-21 10:15:40,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-21 10:15:40,942 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-21 10:15:40,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-21 10:15:40,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-21 10:15:40,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-21 10:15:40,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-21 10:15:40,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-21 10:15:40,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-21 10:15:40,943 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-21 10:15:40,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-21 10:15:40,943 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-21 10:15:40,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-21 10:15:40,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-21 10:15:40,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-21 10:15:40,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-21 10:15:40,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-21 10:15:40,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-21 10:15:40,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-21 10:15:40,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-21 10:15:40,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-21 10:15:40,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-21 10:15:40,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-21 10:15:40,945 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-21 10:15:40,945 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-21 10:15:40,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-21 10:15:40,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-21 10:15:40,946 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-21 10:15:40,946 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-21 10:15:40,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-21 10:15:40,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> BADGER [2022-10-21 10:15:41,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-21 10:15:41,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-21 10:15:41,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-21 10:15:41,276 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-21 10:15:41,277 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-21 10:15:41,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chunk12/ring_2w1r-1.line438.bpl [2022-10-21 10:15:41,279 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chunk12/ring_2w1r-1.line438.bpl' [2022-10-21 10:15:41,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-21 10:15:41,343 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-10-21 10:15:41,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-21 10:15:41,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-21 10:15:41,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-21 10:15:41,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 10:15:41" (1/1) ... [2022-10-21 10:15:41,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 10:15:41" (1/1) ... [2022-10-21 10:15:41,396 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-10-21 10:15:41,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-21 10:15:41,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-21 10:15:41,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-21 10:15:41,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-21 10:15:41,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 10:15:41" (1/1) ... [2022-10-21 10:15:41,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 10:15:41" (1/1) ... [2022-10-21 10:15:41,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 10:15:41" (1/1) ... [2022-10-21 10:15:41,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 10:15:41" (1/1) ... [2022-10-21 10:15:41,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 10:15:41" (1/1) ... [2022-10-21 10:15:41,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 10:15:41" (1/1) ... [2022-10-21 10:15:41,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 10:15:41" (1/1) ... [2022-10-21 10:15:41,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-21 10:15:41,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-21 10:15:41,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-21 10:15:41,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-21 10:15:41,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 10:15:41" (1/1) ... [2022-10-21 10:15:41,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-21 10:15:41,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 10:15:41,507 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) [2022-10-21 10:15:41,510 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 [2022-10-21 10:15:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-10-21 10:15:41,542 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-10-21 10:15:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-21 10:15:41,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-21 10:15:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-10-21 10:15:41,543 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-10-21 10:15:41,545 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-21 10:15:41,670 INFO L234 CfgBuilder]: Building ICFG [2022-10-21 10:15:41,672 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-21 10:15:42,206 INFO L275 CfgBuilder]: Performing block encoding [2022-10-21 10:15:42,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-21 10:15:42,234 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-21 10:15:42,237 INFO L202 PluginConnector]: Adding new model ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:15:42 BoogieIcfgContainer [2022-10-21 10:15:42,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-21 10:15:42,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-21 10:15:42,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-21 10:15:42,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-21 10:15:42,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 10:15:41" (1/2) ... [2022-10-21 10:15:42,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be0a735 and model type ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:15:42, skipping insertion in model container [2022-10-21 10:15:42,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring_2w1r-1.line438.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:15:42" (2/2) ... [2022-10-21 10:15:42,246 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.line438.bpl [2022-10-21 10:15:42,253 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-21 10:15:42,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-21 10:15:42,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-21 10:15:42,261 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-21 10:15:42,399 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-21 10:15:42,450 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 10:15:42,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 10:15:42,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 10:15:42,452 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) [2022-10-21 10:15:42,453 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 [2022-10-21 10:15:42,478 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-21 10:15:42,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == reader_twoErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 10:15:42,489 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;@407b2aac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 10:15:42,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 10:15:42,491 WARN L124 DepthFirstTraversal]: Depth first traversal did not find any initial state. Returning directly. [2022-10-21 10:15:42,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location reader_twoErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 10:15:42,496 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-21 10:15:42,498 INFO L307 ceAbstractionStarter]: Result for error location reader_twoErr0ASSERT_VIOLATIONASSERT was SAFE (1/4) [2022-10-21 10:15:42,506 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 10:15:42,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 10:15:42,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 10:15:42,508 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) [2022-10-21 10:15:42,509 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 [2022-10-21 10:15:42,512 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-21 10:15:42,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 10:15:42,514 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;@407b2aac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 10:15:42,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 10:15:42,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 10:15:42,943 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-21 10:15:42,944 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/4) [2022-10-21 10:15:42,949 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 10:15:42,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 10:15:42,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 10:15:42,952 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) [2022-10-21 10:15:42,970 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 [2022-10-21 10:15:42,973 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-21 10:15:42,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 10:15:42,974 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;@407b2aac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 10:15:42,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 10:15:42,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 10:15:42,980 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-21 10:15:42,980 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (3/4) [2022-10-21 10:15:42,984 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 10:15:42,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 10:15:42,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 10:15:42,988 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) [2022-10-21 10:15:42,990 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 [2022-10-21 10:15:42,993 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-21 10:15:42,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == reader_twoErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 10:15:42,994 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;@407b2aac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 10:15:42,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 10:15:44,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reader_twoErr0ASSERT_VIOLATIONASSERT === [reader_twoErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 10:15:44,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 10:15:44,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1081601776, now seen corresponding path program 1 times [2022-10-21 10:15:44,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 10:15:44,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342872470] [2022-10-21 10:15:44,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 10:15:44,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 10:15:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 10:15:45,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 10:15:45,186 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 10:15:45,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342872470] [2022-10-21 10:15:45,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342872470] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 10:15:45,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 10:15:45,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-21 10:15:45,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869390606] [2022-10-21 10:15:45,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 10:15:45,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-21 10:15:45,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 10:15:45,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-21 10:15:45,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-21 10:15:45,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:15:45,215 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 10:15:45,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 152.5) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 10:15:45,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:15:47,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:15:47,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-21 10:15:47,077 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reader_twoErr0ASSERT_VIOLATIONASSERT === [reader_twoErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 10:15:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 10:15:47,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1526745871, now seen corresponding path program 1 times [2022-10-21 10:15:47,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 10:15:47,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546936432] [2022-10-21 10:15:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 10:15:47,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 10:15:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 10:15:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 10:15:47,446 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 10:15:47,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546936432] [2022-10-21 10:15:47,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546936432] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 10:15:47,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 10:15:47,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-21 10:15:47,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784872274] [2022-10-21 10:15:47,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 10:15:47,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-21 10:15:47,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 10:15:47,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-21 10:15:47,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-21 10:15:47,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:15:47,454 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 10:15:47,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 43.285714285714285) internal successors, (303), 8 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 10:15:47,455 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:15:47,455 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:15:54,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:15:54,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-21 10:15:54,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-21 10:15:54,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reader_twoErr0ASSERT_VIOLATIONASSERT === [reader_twoErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 10:15:54,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 10:15:54,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1245118047, now seen corresponding path program 1 times [2022-10-21 10:15:54,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 10:15:54,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829540737] [2022-10-21 10:15:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 10:15:54,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 10:15:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 10:15:55,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5811 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 4808 trivial. 0 not checked. [2022-10-21 10:15:55,154 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 10:15:55,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829540737] [2022-10-21 10:15:55,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829540737] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 10:15:55,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 10:15:55,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-21 10:15:55,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978346700] [2022-10-21 10:15:55,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 10:15:55,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-21 10:15:55,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 10:15:55,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-21 10:15:55,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-21 10:15:55,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:15:55,166 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 10:15:55,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 10:15:55,166 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:15:55,167 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-21 10:15:55,167 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:16:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:16:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-21 10:16:06,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-21 10:16:06,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-21 10:16:06,673 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reader_twoErr0ASSERT_VIOLATIONASSERT === [reader_twoErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 10:16:06,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 10:16:06,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1076368673, now seen corresponding path program 1 times [2022-10-21 10:16:06,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 10:16:06,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906900559] [2022-10-21 10:16:06,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 10:16:06,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 10:16:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 10:16:06,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1308 backedges. 662 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2022-10-21 10:16:06,938 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 10:16:06,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906900559] [2022-10-21 10:16:06,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906900559] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 10:16:06,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 10:16:06,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-21 10:16:06,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444174153] [2022-10-21 10:16:06,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 10:16:06,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-21 10:16:06,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 10:16:06,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-21 10:16:06,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-21 10:16:06,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:16:06,941 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 10:16:06,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 10:16:06,942 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:16:06,942 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-21 10:16:06,942 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-21 10:16:06,942 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:16:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:16:29,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-21 10:16:29,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-21 10:16:29,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 10:16:29,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-21 10:16:29,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reader_twoErr0ASSERT_VIOLATIONASSERT === [reader_twoErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 10:16:29,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 10:16:29,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1575160026, now seen corresponding path program 1 times [2022-10-21 10:16:29,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 10:16:29,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224410373] [2022-10-21 10:16:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 10:16:29,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 10:16:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 10:16:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2741 backedges. 1962 proven. 1 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked. [2022-10-21 10:16:29,682 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 10:16:29,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224410373] [2022-10-21 10:16:29,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224410373] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 10:16:29,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 10:16:29,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2022-10-21 10:16:29,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199738494] [2022-10-21 10:16:29,684 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 10:16:29,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-21 10:16:29,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 10:16:29,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-21 10:16:29,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-21 10:16:29,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:16:29,686 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 10:16:29,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.5) internal successors, (766), 4 states have internal predecessors, (766), 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) [2022-10-21 10:16:29,686 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:16:29,686 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-21 10:16:29,686 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-21 10:16:29,686 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 10:16:29,687 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:17:20,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:17:20,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-21 10:17:20,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-21 10:17:20,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 10:17:20,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-21 10:17:20,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-21 10:17:20,139 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reader_twoErr0ASSERT_VIOLATIONASSERT === [reader_twoErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 10:17:20,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 10:17:20,140 INFO L85 PathProgramCache]: Analyzing trace with hash 43191936, now seen corresponding path program 1 times [2022-10-21 10:17:20,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 10:17:20,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608820863] [2022-10-21 10:17:20,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 10:17:20,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 10:17:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 10:17:20,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3013 backedges. 1996 proven. 318 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2022-10-21 10:17:20,753 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 10:17:20,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608820863] [2022-10-21 10:17:20,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608820863] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 10:17:20,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 10:17:20,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 10:17:20,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123397868] [2022-10-21 10:17:20,754 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 10:17:20,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 10:17:20,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 10:17:20,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 10:17:20,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-21 10:17:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:17:20,757 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 10:17:20,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 185.2) internal successors, (926), 5 states have internal predecessors, (926), 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) [2022-10-21 10:17:20,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:17:20,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-21 10:17:20,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-21 10:17:20,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 10:17:20,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-21 10:17:20,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:18:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:18:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-21 10:18:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-21 10:18:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 10:18:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-21 10:18:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-21 10:18:41,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-21 10:18:41,404 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reader_twoErr0ASSERT_VIOLATIONASSERT === [reader_twoErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 10:18:41,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 10:18:41,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1976828720, now seen corresponding path program 1 times [2022-10-21 10:18:41,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 10:18:41,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572806931] [2022-10-21 10:18:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 10:18:41,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 10:18:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 10:18:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3111 backedges. 180 proven. 10 refuted. 0 times theorem prover too weak. 2921 trivial. 0 not checked. [2022-10-21 10:18:42,275 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 10:18:42,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572806931] [2022-10-21 10:18:42,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572806931] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 10:18:42,275 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 10:18:42,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-10-21 10:18:42,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202643183] [2022-10-21 10:18:42,276 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 10:18:42,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-21 10:18:42,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 10:18:42,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-21 10:18:42,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-10-21 10:18:42,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:18:42,278 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 10:18:42,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 57.125) internal successors, (457), 9 states have internal predecessors, (457), 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) [2022-10-21 10:18:42,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:18:42,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-21 10:18:42,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-21 10:18:42,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 10:18:42,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-21 10:18:42,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-10-21 10:18:42,279 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:20:20,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:20:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-21 10:20:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-21 10:20:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 10:20:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-21 10:20:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-21 10:20:20,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-21 10:20:20,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-21 10:20:20,399 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reader_twoErr0ASSERT_VIOLATIONASSERT === [reader_twoErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 10:20:20,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 10:20:20,400 INFO L85 PathProgramCache]: Analyzing trace with hash -718168275, now seen corresponding path program 1 times [2022-10-21 10:20:20,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 10:20:20,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731429944] [2022-10-21 10:20:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 10:20:20,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 10:20:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 10:20:22,461 INFO L134 CoverageAnalysis]: Checked inductivity of 20393 backedges. 13153 proven. 1507 refuted. 0 times theorem prover too weak. 5733 trivial. 0 not checked. [2022-10-21 10:20:22,462 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 10:20:22,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731429944] [2022-10-21 10:20:22,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731429944] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 10:20:22,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 10:20:22,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2022-10-21 10:20:22,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398623524] [2022-10-21 10:20:22,463 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 10:20:22,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-21 10:20:22,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 10:20:22,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-21 10:20:22,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-21 10:20:22,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:20:22,465 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 10:20:22,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 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) [2022-10-21 10:20:22,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 10:20:22,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-21 10:20:22,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-21 10:20:22,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 10:20:22,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-21 10:20:22,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-10-21 10:20:22,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-10-21 10:20:22,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.