/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/SleepMap-ConcreteSmt-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chunk13/reorder_c11_bad-40.line412.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-e57bdd3-m [2022-10-21 13:25:19,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-21 13:25:19,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-21 13:25:19,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-21 13:25:19,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-21 13:25:19,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-21 13:25:19,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-21 13:25:19,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-21 13:25:19,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-21 13:25:19,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-21 13:25:19,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-21 13:25:19,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-21 13:25:19,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-21 13:25:19,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-21 13:25:19,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-21 13:25:19,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-21 13:25:19,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-21 13:25:19,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-21 13:25:19,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-21 13:25:19,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-21 13:25:19,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-21 13:25:19,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-21 13:25:19,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-21 13:25:19,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-21 13:25:19,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-21 13:25:19,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-21 13:25:19,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-21 13:25:19,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-21 13:25:19,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-21 13:25:19,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-21 13:25:19,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-21 13:25:19,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-21 13:25:19,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-21 13:25:19,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-21 13:25:19,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-21 13:25:19,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-21 13:25:19,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-21 13:25:19,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-21 13:25:19,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-21 13:25:19,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-21 13:25:19,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-21 13:25:19,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/SleepMap-ConcreteSmt-VarAbsGlobalSyntactic.epf [2022-10-21 13:25:19,489 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-21 13:25:19,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-21 13:25:19,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-21 13:25:19,490 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-21 13:25:19,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-21 13:25:19,491 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-21 13:25:19,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-21 13:25:19,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-21 13:25:19,493 INFO L138 SettingsManager]: * Use SBE=true [2022-10-21 13:25:19,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-21 13:25:19,494 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-21 13:25:19,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-21 13:25:19,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-21 13:25:19,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-21 13:25:19,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-21 13:25:19,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-21 13:25:19,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-21 13:25:19,494 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-21 13:25:19,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-21 13:25:19,495 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-21 13:25:19,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-21 13:25:19,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-21 13:25:19,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-21 13:25:19,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-21 13:25:19,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-21 13:25:19,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-21 13:25:19,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-21 13:25:19,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-21 13:25:19,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-21 13:25:19,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-21 13:25:19,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-21 13:25:19,496 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-21 13:25:19,496 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-21 13:25:19,496 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-21 13:25:19,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-21 13:25:19,496 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-21 13:25:19,497 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-21 13:25:19,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-21 13:25:19,497 INFO L138 SettingsManager]: * Number of independence relations to use for POR=2 [2022-10-21 13:25:19,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> BADGER [2022-10-21 13:25:19,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-21 13:25:19,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-21 13:25:19,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-21 13:25:19,797 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-21 13:25:19,798 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-21 13:25:19,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chunk13/reorder_c11_bad-40.line412.bpl [2022-10-21 13:25:19,801 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chunk13/reorder_c11_bad-40.line412.bpl' [2022-10-21 13:25:19,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-21 13:25:19,838 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-10-21 13:25:19,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-21 13:25:19,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-21 13:25:19,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-21 13:25:19,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "reorder_c11_bad-40.line412.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:25:19" (1/1) ... [2022-10-21 13:25:19,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "reorder_c11_bad-40.line412.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:25:19" (1/1) ... [2022-10-21 13:25:19,872 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-10-21 13:25:19,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-21 13:25:19,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-21 13:25:19,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-21 13:25:19,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-21 13:25:19,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "reorder_c11_bad-40.line412.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:25:19" (1/1) ... [2022-10-21 13:25:19,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "reorder_c11_bad-40.line412.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:25:19" (1/1) ... [2022-10-21 13:25:19,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "reorder_c11_bad-40.line412.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:25:19" (1/1) ... [2022-10-21 13:25:19,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "reorder_c11_bad-40.line412.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:25:19" (1/1) ... [2022-10-21 13:25:19,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "reorder_c11_bad-40.line412.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:25:19" (1/1) ... [2022-10-21 13:25:19,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "reorder_c11_bad-40.line412.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:25:19" (1/1) ... [2022-10-21 13:25:19,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "reorder_c11_bad-40.line412.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:25:19" (1/1) ... [2022-10-21 13:25:19,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-21 13:25:19,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-21 13:25:19,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-21 13:25:19,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-21 13:25:19,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "reorder_c11_bad-40.line412.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:25:19" (1/1) ... [2022-10-21 13:25:19,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-21 13:25:19,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:25:19,959 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 13:25:19,971 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 13:25:20,003 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-10-21 13:25:20,003 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-10-21 13:25:20,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-21 13:25:20,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-21 13:25:20,003 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-10-21 13:25:20,003 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-10-21 13:25:20,004 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 13:25:20,094 INFO L234 CfgBuilder]: Building ICFG [2022-10-21 13:25:20,108 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-21 13:25:20,309 INFO L275 CfgBuilder]: Performing block encoding [2022-10-21 13:25:20,318 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-21 13:25:20,318 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-21 13:25:20,320 INFO L202 PluginConnector]: Adding new model reorder_c11_bad-40.line412.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 01:25:20 BoogieIcfgContainer [2022-10-21 13:25:20,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-21 13:25:20,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-21 13:25:20,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-21 13:25:20,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-21 13:25:20,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reorder_c11_bad-40.line412.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:25:19" (1/2) ... [2022-10-21 13:25:20,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab26f8b and model type reorder_c11_bad-40.line412.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 01:25:20, skipping insertion in model container [2022-10-21 13:25:20,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reorder_c11_bad-40.line412.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 01:25:20" (2/2) ... [2022-10-21 13:25:20,327 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_bad-40.line412.bpl [2022-10-21 13:25:20,332 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-21 13:25:20,345 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-21 13:25:20,346 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-21 13:25:20,346 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-21 13:25:20,412 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-21 13:25:20,443 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:25:20,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:25:20,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:25:20,445 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 13:25:20,447 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 13:25:20,468 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:25:20,500 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:25:20,500 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:25:20,500 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:25:20,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 13:25:20,516 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;@3f9eafec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:25:20,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:25:20,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:25:20,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:20,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2006067392, now seen corresponding path program 1 times [2022-10-21 13:25:20,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:20,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799469009] [2022-10-21 13:25:20,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:20,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:25:20,985 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 13:25:20,985 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:25:20,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799469009] [2022-10-21 13:25:20,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799469009] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:25:20,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:25:20,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-21 13:25:20,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746918176] [2022-10-21 13:25:20,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:25:21,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-21 13:25:21,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:25:21,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-21 13:25:21,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-21 13:25:21,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,046 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:25:21,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 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 13:25:21,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-21 13:25:21,094 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:25:21,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:21,094 INFO L85 PathProgramCache]: Analyzing trace with hash -431141411, now seen corresponding path program 1 times [2022-10-21 13:25:21,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:21,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418048146] [2022-10-21 13:25:21,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:21,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:25:21,184 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 13:25:21,185 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:25:21,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418048146] [2022-10-21 13:25:21,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418048146] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:25:21,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:25:21,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-21 13:25:21,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088915896] [2022-10-21 13:25:21,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:25:21,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-21 13:25:21,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:25:21,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-21 13:25:21,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-21 13:25:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,188 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:25:21,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 13:25:21,188 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:21,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-21 13:25:21,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:25:21,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:21,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1576677686, now seen corresponding path program 1 times [2022-10-21 13:25:21,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:21,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795490753] [2022-10-21 13:25:21,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:21,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:25:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-21 13:25:21,571 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:25:21,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795490753] [2022-10-21 13:25:21,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795490753] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:25:21,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:25:21,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:25:21,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723464659] [2022-10-21 13:25:21,572 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:25:21,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:25:21,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:25:21,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:25:21,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:25:21,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,574 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:25:21,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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 13:25:21,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:21,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:21,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:25:21,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 13:25:21,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-21 13:25:21,647 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-21 13:25:21,649 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-21 13:25:21,654 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:25:21,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:25:21,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:25:21,662 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 13:25:21,663 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 13:25:21,665 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:25:21,666 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:25:21,666 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:25:21,666 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:25:21,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:25:21,666 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;@3f9eafec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:25:21,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:25:21,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:25:21,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:21,719 INFO L85 PathProgramCache]: Analyzing trace with hash 807541087, now seen corresponding path program 1 times [2022-10-21 13:25:21,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:21,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944482995] [2022-10-21 13:25:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:21,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:25:21,793 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-21 13:25:21,793 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:25:21,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944482995] [2022-10-21 13:25:21,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944482995] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:25:21,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:25:21,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-21 13:25:21,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059844162] [2022-10-21 13:25:21,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:25:21,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-21 13:25:21,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:25:21,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-21 13:25:21,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-21 13:25:21,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,796 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:25:21,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 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 13:25:21,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-21 13:25:21,807 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:25:21,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:21,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1158341024, now seen corresponding path program 1 times [2022-10-21 13:25:21,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:21,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631802081] [2022-10-21 13:25:21,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:21,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:25:21,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-21 13:25:21,853 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:25:21,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631802081] [2022-10-21 13:25:21,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631802081] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:25:21,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:25:21,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-21 13:25:21,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072592954] [2022-10-21 13:25:21,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:25:21,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-21 13:25:21,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:25:21,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-21 13:25:21,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-21 13:25:21,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,856 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:25:21,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 13:25:21,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:21,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-21 13:25:21,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:25:21,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:21,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1533954118, now seen corresponding path program 1 times [2022-10-21 13:25:21,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:21,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720998434] [2022-10-21 13:25:21,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:21,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:25:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-21 13:25:21,986 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:25:21,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720998434] [2022-10-21 13:25:21,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720998434] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:25:21,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:25:21,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:25:21,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891653049] [2022-10-21 13:25:21,987 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:25:21,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:25:21,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:25:21,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:25:21,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:25:21,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,988 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:25:21,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 13:25:21,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:21,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:21,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:22,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:25:22,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:25:22,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-21 13:25:22,025 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-21 13:25:22,026 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/3) [2022-10-21 13:25:22,028 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:25:22,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:25:22,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:25:22,030 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 13:25:22,031 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 13:25:22,033 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:25:22,034 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:25:22,034 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:25:22,034 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:25:22,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:25:22,034 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;@3f9eafec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:25:22,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:25:22,075 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:25:22,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:22,075 INFO L85 PathProgramCache]: Analyzing trace with hash 2098969469, now seen corresponding path program 1 times [2022-10-21 13:25:22,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:22,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702408538] [2022-10-21 13:25:22,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:22,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:25:22,103 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-21 13:25:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:25:22,155 INFO L130 FreeRefinementEngine]: Strategy BADGER found a feasible trace [2022-10-21 13:25:22,155 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-21 13:25:22,155 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:25:22,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-21 13:25:22,157 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 13:25:22,158 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/3) [2022-10-21 13:25:22,158 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-21 13:25:22,158 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-21 13:25:22,188 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-10-21 13:25:22,192 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:25:22,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:25:22,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:25:22,196 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 13:25:22,211 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:25:22,212 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:25:22,212 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:25:22,212 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:25:22,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 13:25:22,212 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;@3f9eafec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:25:22,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:25:22,228 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 13:25:22,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:25:22,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:22,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1793674651, now seen corresponding path program 1 times [2022-10-21 13:25:22,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:22,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704607596] [2022-10-21 13:25:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:22,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:25:22,321 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 13:25:22,321 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:25:22,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704607596] [2022-10-21 13:25:22,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704607596] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:25:22,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:25:22,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-21 13:25:22,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856510820] [2022-10-21 13:25:22,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:25:22,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-21 13:25:22,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:25:22,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-21 13:25:22,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-21 13:25:22,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:22,324 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:25:22,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 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 13:25:22,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:22,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:22,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-21 13:25:22,337 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:25:22,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:22,337 INFO L85 PathProgramCache]: Analyzing trace with hash -218748670, now seen corresponding path program 1 times [2022-10-21 13:25:22,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:22,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386376365] [2022-10-21 13:25:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:22,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:25:22,363 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 13:25:22,363 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:25:22,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386376365] [2022-10-21 13:25:22,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386376365] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:25:22,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:25:22,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-21 13:25:22,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18786574] [2022-10-21 13:25:22,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:25:22,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-21 13:25:22,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:25:22,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-21 13:25:22,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-21 13:25:22,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:22,366 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:25:22,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 13:25:22,366 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:22,366 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:22,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:22,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:22,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-21 13:25:22,476 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:25:22,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:22,476 INFO L85 PathProgramCache]: Analyzing trace with hash 21622644, now seen corresponding path program 1 times [2022-10-21 13:25:22,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:22,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073902818] [2022-10-21 13:25:22,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:22,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:25:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-21 13:25:22,555 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:25:22,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073902818] [2022-10-21 13:25:22,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073902818] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:25:22,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:25:22,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:25:22,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126171482] [2022-10-21 13:25:22,556 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:25:22,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:25:22,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:25:22,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:25:22,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:25:22,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:22,558 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:25:22,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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 13:25:22,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:22,559 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:22,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:22,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:22,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:25:22,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-21 13:25:22,795 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:25:22,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:22,795 INFO L85 PathProgramCache]: Analyzing trace with hash 865101089, now seen corresponding path program 1 times [2022-10-21 13:25:22,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:22,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484440275] [2022-10-21 13:25:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:22,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:25:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-21 13:25:22,844 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:25:22,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484440275] [2022-10-21 13:25:22,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484440275] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:25:22,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:25:22,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:25:22,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269791407] [2022-10-21 13:25:22,844 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:25:22,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:25:22,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:25:22,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:25:22,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:25:22,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:22,846 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:25:22,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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 13:25:22,846 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:22,846 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:22,846 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:25:22,846 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:23,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:25:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:25:23,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-21 13:25:23,032 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:25:23,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:23,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2085803026, now seen corresponding path program 1 times [2022-10-21 13:25:23,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:23,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286816446] [2022-10-21 13:25:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:23,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:25:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-10-21 13:25:23,093 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:25:23,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286816446] [2022-10-21 13:25:23,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286816446] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:25:23,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:25:23,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-21 13:25:23,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366395766] [2022-10-21 13:25:23,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:25:23,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:25:23,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:25:23,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:25:23,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:25:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:23,095 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:25:23,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 35.0) internal successors, (140), 5 states have internal predecessors, (140), 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 13:25:23,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:23,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:23,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:25:23,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:25:23,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:54,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:54,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:54,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:25:54,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:25:54,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-21 13:25:54,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 13:25:54,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-21 13:25:54,683 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-10-21 13:25:54,683 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-21 13:25:54,686 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:25:54,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:25:54,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:25:54,687 INFO L229 MonitoredProcess]: Starting monitored process 6 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 13:25:54,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2022-10-21 13:25:54,695 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:25:54,696 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:25:54,696 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:25:54,696 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:25:54,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:25:54,697 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;@3f9eafec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:25:54,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:25:54,741 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:25:54,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:54,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2034978416, now seen corresponding path program 1 times [2022-10-21 13:25:54,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:54,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737565003] [2022-10-21 13:25:54,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:54,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:25:54,773 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-21 13:25:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:25:54,794 INFO L130 FreeRefinementEngine]: Strategy BADGER found a feasible trace [2022-10-21 13:25:54,794 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-21 13:25:54,794 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:25:54,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-21 13:25:54,795 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 13:25:54,795 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/3) [2022-10-21 13:25:54,795 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-21 13:25:54,795 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-10-21 13:25:54,812 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-10-21 13:25:54,814 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:25:54,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:25:54,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:25:54,816 INFO L229 MonitoredProcess]: Starting monitored process 7 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 13:25:54,822 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:25:54,823 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:25:54,823 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:25:54,823 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:25:54,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 13:25:54,824 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;@3f9eafec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:25:54,824 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:25:54,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2022-10-21 13:25:54,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:25:54,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:54,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1359476199, now seen corresponding path program 1 times [2022-10-21 13:25:54,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:54,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013999665] [2022-10-21 13:25:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:54,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:25:54,889 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 13:25:54,890 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:25:54,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013999665] [2022-10-21 13:25:54,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013999665] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:25:54,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:25:54,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-21 13:25:54,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701100528] [2022-10-21 13:25:54,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:25:54,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-21 13:25:54,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:25:54,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-21 13:25:54,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-21 13:25:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:54,891 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:25:54,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 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 13:25:54,891 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:54,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:54,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-21 13:25:54,902 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:25:54,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:54,902 INFO L85 PathProgramCache]: Analyzing trace with hash 215449782, now seen corresponding path program 1 times [2022-10-21 13:25:54,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:54,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726523299] [2022-10-21 13:25:54,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:54,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:25:54,920 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 13:25:54,920 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:25:54,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726523299] [2022-10-21 13:25:54,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726523299] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:25:54,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:25:54,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-21 13:25:54,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578061039] [2022-10-21 13:25:54,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:25:54,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-21 13:25:54,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:25:54,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-21 13:25:54,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-21 13:25:54,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:54,922 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:25:54,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 13:25:54,922 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:54,922 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:55,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:55,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:55,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-21 13:25:55,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:25:55,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:55,003 INFO L85 PathProgramCache]: Analyzing trace with hash 734845056, now seen corresponding path program 1 times [2022-10-21 13:25:55,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:55,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488106040] [2022-10-21 13:25:55,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:55,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:25:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-21 13:25:55,043 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:25:55,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488106040] [2022-10-21 13:25:55,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488106040] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:25:55,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:25:55,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:25:55,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960348801] [2022-10-21 13:25:55,045 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:25:55,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:25:55,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:25:55,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:25:55,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:25:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:55,047 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:25:55,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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 13:25:55,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:55,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:55,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:25:55,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-21 13:25:55,166 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:25:55,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:55,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1066135748, now seen corresponding path program 1 times [2022-10-21 13:25:55,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:55,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64127141] [2022-10-21 13:25:55,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:55,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:25:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-21 13:25:55,215 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:25:55,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64127141] [2022-10-21 13:25:55,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64127141] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:25:55,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:25:55,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:25:55,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514959197] [2022-10-21 13:25:55,215 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:25:55,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:25:55,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:25:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:25:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:25:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:55,216 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:25:55,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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 13:25:55,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:55,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:55,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:25:55,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:25:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:25:55,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-21 13:25:55,335 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:25:55,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:25:55,335 INFO L85 PathProgramCache]: Analyzing trace with hash 290208748, now seen corresponding path program 1 times [2022-10-21 13:25:55,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:25:55,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157974559] [2022-10-21 13:25:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:25:55,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:25:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:25:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-10-21 13:25:55,425 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:25:55,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157974559] [2022-10-21 13:25:55,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157974559] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:25:55,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:25:55,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-21 13:25:55,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491829740] [2022-10-21 13:25:55,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:25:55,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:25:55,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:25:55,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:25:55,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:25:55,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:55,427 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:25:55,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 35.0) internal successors, (140), 5 states have internal predecessors, (140), 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 13:25:55,427 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:25:55,427 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:25:55,427 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:25:55,427 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:25:55,427 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.