/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_ERROR_LOCATION --traceabstraction.trace.refinement.strategy BADGER -s ../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chunk13/reorder_c11_bad-20.line341.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-e57bdd3-m [2022-10-21 12:28:30,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-21 12:28:30,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-21 12:28:30,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-21 12:28:30,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-21 12:28:30,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-21 12:28:30,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-21 12:28:30,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-21 12:28:30,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-21 12:28:30,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-21 12:28:30,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-21 12:28:30,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-21 12:28:30,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-21 12:28:30,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-21 12:28:30,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-21 12:28:30,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-21 12:28:30,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-21 12:28:30,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-21 12:28:30,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-21 12:28:30,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-21 12:28:30,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-21 12:28:30,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-21 12:28:30,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-21 12:28:30,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-21 12:28:30,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-21 12:28:30,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-21 12:28:30,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-21 12:28:30,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-21 12:28:30,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-21 12:28:30,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-21 12:28:30,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-21 12:28:30,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-21 12:28:30,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-21 12:28:30,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-21 12:28:30,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-21 12:28:30,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-21 12:28:30,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-21 12:28:30,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-21 12:28:30,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-21 12:28:30,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-21 12:28:30,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-21 12:28:30,155 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-21 12:28:30,170 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-21 12:28:30,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-21 12:28:30,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-21 12:28:30,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-21 12:28:30,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-21 12:28:30,171 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-21 12:28:30,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-21 12:28:30,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-21 12:28:30,172 INFO L138 SettingsManager]: * Use SBE=true [2022-10-21 12:28:30,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-21 12:28:30,172 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-21 12:28:30,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-21 12:28:30,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-21 12:28:30,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-21 12:28:30,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-21 12:28:30,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-21 12:28:30,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-21 12:28:30,173 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-21 12:28:30,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-21 12:28:30,173 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-21 12:28:30,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-21 12:28:30,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-21 12:28:30,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-21 12:28:30,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-21 12:28:30,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-21 12:28:30,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-21 12:28:30,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-21 12:28:30,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-21 12:28:30,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-21 12:28:30,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-21 12:28:30,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-21 12:28:30,175 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-21 12:28:30,175 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-21 12:28:30,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-21 12:28:30,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-21 12:28:30,175 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-21 12:28:30,175 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-21 12:28:30,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-21 12:28:30,175 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> BADGER [2022-10-21 12:28:30,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-21 12:28:30,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-21 12:28:30,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-21 12:28:30,440 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-21 12:28:30,443 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-21 12:28:30,444 INFO L432 ainManager$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-20.line341.bpl [2022-10-21 12:28:30,445 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chunk13/reorder_c11_bad-20.line341.bpl' [2022-10-21 12:28:30,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-21 12:28:30,531 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-10-21 12:28:30,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-21 12:28:30,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-21 12:28:30,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-21 12:28:30,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "reorder_c11_bad-20.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 12:28:30" (1/1) ... [2022-10-21 12:28:30,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "reorder_c11_bad-20.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 12:28:30" (1/1) ... [2022-10-21 12:28:30,567 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-10-21 12:28:30,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-21 12:28:30,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-21 12:28:30,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-21 12:28:30,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-21 12:28:30,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "reorder_c11_bad-20.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 12:28:30" (1/1) ... [2022-10-21 12:28:30,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "reorder_c11_bad-20.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 12:28:30" (1/1) ... [2022-10-21 12:28:30,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "reorder_c11_bad-20.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 12:28:30" (1/1) ... [2022-10-21 12:28:30,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "reorder_c11_bad-20.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 12:28:30" (1/1) ... [2022-10-21 12:28:30,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "reorder_c11_bad-20.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 12:28:30" (1/1) ... [2022-10-21 12:28:30,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "reorder_c11_bad-20.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 12:28:30" (1/1) ... [2022-10-21 12:28:30,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "reorder_c11_bad-20.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 12:28:30" (1/1) ... [2022-10-21 12:28:30,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-21 12:28:30,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-21 12:28:30,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-21 12:28:30,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-21 12:28:30,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "reorder_c11_bad-20.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 12:28:30" (1/1) ... [2022-10-21 12:28:30,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-21 12:28:30,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 12:28:30,648 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 12:28:30,669 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 12:28:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-10-21 12:28:30,718 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-10-21 12:28:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-21 12:28:30,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-21 12:28:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-10-21 12:28:30,718 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-10-21 12:28:30,719 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 12:28:30,861 INFO L234 CfgBuilder]: Building ICFG [2022-10-21 12:28:30,862 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-21 12:28:31,134 INFO L275 CfgBuilder]: Performing block encoding [2022-10-21 12:28:31,142 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-21 12:28:31,142 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-21 12:28:31,143 INFO L202 PluginConnector]: Adding new model reorder_c11_bad-20.line341.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:28:31 BoogieIcfgContainer [2022-10-21 12:28:31,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-21 12:28:31,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-21 12:28:31,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-21 12:28:31,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-21 12:28:31,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reorder_c11_bad-20.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 12:28:30" (1/2) ... [2022-10-21 12:28:31,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c8ab21 and model type reorder_c11_bad-20.line341.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 12:28:31, skipping insertion in model container [2022-10-21 12:28:31,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reorder_c11_bad-20.line341.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:28:31" (2/2) ... [2022-10-21 12:28:31,182 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_bad-20.line341.bpl [2022-10-21 12:28:31,189 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-21 12:28:31,197 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-21 12:28:31,197 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-21 12:28:31,197 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-21 12:28:31,273 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-21 12:28:31,316 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 12:28:31,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 12:28:31,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 12:28:31,332 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 12:28:31,352 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 12:28:31,364 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-21 12:28:31,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 12:28:31,379 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;@3830f858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 12:28:31,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 12:28:31,432 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:28:31,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:31,435 INFO L85 PathProgramCache]: Analyzing trace with hash 663546357, now seen corresponding path program 1 times [2022-10-21 12:28:31,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:31,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045100971] [2022-10-21 12:28:31,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:31,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:31,767 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 12:28:31,767 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:31,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045100971] [2022-10-21 12:28:31,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045100971] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 12:28:31,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 12:28:31,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-21 12:28:31,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120116270] [2022-10-21 12:28:31,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 12:28:31,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-21 12:28:31,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:31,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-21 12:28:31,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-10-21 12:28:31,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:31,832 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:31,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 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 12:28:31,833 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:32,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-21 12:28:32,098 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:28:32,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:32,099 INFO L85 PathProgramCache]: Analyzing trace with hash -195609218, now seen corresponding path program 1 times [2022-10-21 12:28:32,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:32,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993623280] [2022-10-21 12:28:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:32,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:32,327 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 12:28:32,328 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:32,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993623280] [2022-10-21 12:28:32,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993623280] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:28:32,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:28:32,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-10-21 12:28:32,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917892514] [2022-10-21 12:28:32,329 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:28:32,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-21 12:28:32,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:32,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-21 12:28:32,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-10-21 12:28:32,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:32,331 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:32,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 15 states have internal predecessors, (88), 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 12:28:32,332 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:32,332 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:32,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:32,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-21 12:28:32,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 12:28:32,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-21 12:28:32,754 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-21 12:28:32,755 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-21 12:28:32,759 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 12:28:32,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 12:28:32,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 12:28:32,760 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 12:28:32,761 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 12:28:32,764 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-21 12:28:32,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 12:28:32,765 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;@3830f858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 12:28:32,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 12:28:32,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 12:28:32,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:32,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1987859039, now seen corresponding path program 1 times [2022-10-21 12:28:32,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:32,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294531796] [2022-10-21 12:28:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:32,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:32,833 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 12:28:32,833 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:32,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294531796] [2022-10-21 12:28:32,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294531796] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 12:28:32,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 12:28:32,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-21 12:28:32,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042026894] [2022-10-21 12:28:32,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 12:28:32,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-21 12:28:32,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:32,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-21 12:28:32,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-21 12:28:32,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:32,835 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:32,835 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 12:28:32,835 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:32,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:32,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-21 12:28:32,840 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 12:28:32,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:32,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1637059102, now seen corresponding path program 1 times [2022-10-21 12:28:32,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:32,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60696146] [2022-10-21 12:28:32,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:32,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:32,872 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 12:28:32,872 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:32,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60696146] [2022-10-21 12:28:32,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60696146] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 12:28:32,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 12:28:32,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-21 12:28:32,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084138565] [2022-10-21 12:28:32,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 12:28:32,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-21 12:28:32,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:32,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-21 12:28:32,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-21 12:28:32,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:32,874 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:32,874 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 12:28:32,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:32,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:32,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:32,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 12:28:32,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-21 12:28:32,903 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 12:28:32,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:32,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1811480981, now seen corresponding path program 1 times [2022-10-21 12:28:32,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:32,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959101465] [2022-10-21 12:28:32,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:32,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:32,965 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 12:28:32,965 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:32,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959101465] [2022-10-21 12:28:32,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959101465] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:28:32,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:28:32,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 12:28:32,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040753650] [2022-10-21 12:28:32,966 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:28:32,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 12:28:32,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:32,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 12:28:32,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 12:28:32,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:32,967 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:32,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 12:28:32,968 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:32,968 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 12:28:32,968 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 12:28:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 12:28:33,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 12:28:33,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-21 12:28:33,009 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-21 12:28:33,009 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/3) [2022-10-21 12:28:33,011 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 12:28:33,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 12:28:33,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 12:28:33,013 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 12:28:33,039 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-21 12:28:33,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 12:28:33,040 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;@3830f858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 12:28:33,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 12:28:33,051 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 12:28:33,069 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 12:28:33,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:33,069 INFO L85 PathProgramCache]: Analyzing trace with hash 380104723, now seen corresponding path program 1 times [2022-10-21 12:28:33,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:33,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618097868] [2022-10-21 12:28:33,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:33,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 12:28:33,097 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-21 12:28:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 12:28:33,139 INFO L130 FreeRefinementEngine]: Strategy BADGER found a feasible trace [2022-10-21 12:28:33,139 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-21 12:28:33,139 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 12:28:33,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-21 12:28:33,140 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 12:28:33,140 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/3) [2022-10-21 12:28:33,141 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-21 12:28:33,141 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-21 12:28:33,160 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-10-21 12:28:33,163 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 12:28:33,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 12:28:33,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 12:28:33,169 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 12:28:33,170 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 12:28:33,173 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-21 12:28:33,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 12:28:33,173 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;@3830f858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 12:28:33,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 12:28:33,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:28:33,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:33,186 INFO L85 PathProgramCache]: Analyzing trace with hash -361914955, now seen corresponding path program 1 times [2022-10-21 12:28:33,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:33,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365444845] [2022-10-21 12:28:33,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:33,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:33,306 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 12:28:33,306 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:33,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365444845] [2022-10-21 12:28:33,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365444845] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 12:28:33,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 12:28:33,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-21 12:28:33,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506623435] [2022-10-21 12:28:33,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 12:28:33,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-21 12:28:33,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:33,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-21 12:28:33,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-10-21 12:28:33,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:33,308 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:33,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 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 12:28:33,308 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:33,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:33,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-21 12:28:33,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:28:33,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:33,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1712769390, now seen corresponding path program 1 times [2022-10-21 12:28:33,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:33,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362054153] [2022-10-21 12:28:33,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:33,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 12:28:33,701 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:33,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362054153] [2022-10-21 12:28:33,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362054153] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:28:33,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:28:33,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-10-21 12:28:33,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593641444] [2022-10-21 12:28:33,704 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:28:33,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-21 12:28:33,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:33,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-21 12:28:33,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-10-21 12:28:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:33,710 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:33,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 15 states have internal predecessors, (88), 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 12:28:33,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:33,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:34,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:34,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:28:34,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-21 12:28:34,118 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:28:34,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:34,118 INFO L85 PathProgramCache]: Analyzing trace with hash 625490096, now seen corresponding path program 1 times [2022-10-21 12:28:34,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:34,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350553073] [2022-10-21 12:28:34,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:34,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 12:28:34,355 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:34,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350553073] [2022-10-21 12:28:34,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350553073] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:28:34,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:28:34,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-10-21 12:28:34,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493576683] [2022-10-21 12:28:34,356 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:28:34,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-21 12:28:34,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:34,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-21 12:28:34,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-10-21 12:28:34,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:34,357 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:34,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.235294117647059) internal successors, (106), 18 states have internal predecessors, (106), 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 12:28:34,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:34,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:28:34,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:34,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:28:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-21 12:28:34,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 12:28:34,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-21 12:28:34,926 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-21 12:28:34,926 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-21 12:28:34,931 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 12:28:34,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 12:28:34,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 12:28:34,940 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 12:28:34,941 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 12:28:34,944 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-21 12:28:34,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 12:28:34,945 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;@3830f858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 12:28:34,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 12:28:34,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 12:28:34,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:34,998 INFO L85 PathProgramCache]: Analyzing trace with hash 713869721, now seen corresponding path program 1 times [2022-10-21 12:28:34,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:34,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634143884] [2022-10-21 12:28:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:34,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 12:28:35,029 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-21 12:28:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 12:28:35,062 INFO L130 FreeRefinementEngine]: Strategy BADGER found a feasible trace [2022-10-21 12:28:35,063 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-21 12:28:35,063 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 12:28:35,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-21 12:28:35,065 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 12:28:35,065 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/3) [2022-10-21 12:28:35,065 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-21 12:28:35,065 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-10-21 12:28:35,090 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-10-21 12:28:35,093 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 12:28:35,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 12:28:35,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 12:28:35,108 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 12:28:35,114 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-21 12:28:35,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 12:28:35,115 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;@3830f858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 12:28:35,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 12:28:35,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:28:35,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:35,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1576544373, now seen corresponding path program 1 times [2022-10-21 12:28:35,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:35,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836125863] [2022-10-21 12:28:35,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:35,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:35,133 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 12:28:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:35,267 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 12:28:35,267 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:35,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836125863] [2022-10-21 12:28:35,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836125863] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 12:28:35,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 12:28:35,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-21 12:28:35,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925002787] [2022-10-21 12:28:35,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 12:28:35,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-21 12:28:35,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:35,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-21 12:28:35,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-10-21 12:28:35,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:35,270 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:35,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 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 12:28:35,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:35,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-21 12:28:35,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:28:35,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:35,489 INFO L85 PathProgramCache]: Analyzing trace with hash 514337702, now seen corresponding path program 1 times [2022-10-21 12:28:35,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:35,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860762093] [2022-10-21 12:28:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:35,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 12:28:35,685 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:35,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860762093] [2022-10-21 12:28:35,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860762093] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:28:35,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:28:35,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-10-21 12:28:35,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102574119] [2022-10-21 12:28:35,685 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:28:35,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-21 12:28:35,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:35,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-21 12:28:35,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-10-21 12:28:35,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:35,691 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:35,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 15 states have internal predecessors, (88), 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 12:28:35,691 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:35,691 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:36,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:36,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:28:36,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-21 12:28:36,057 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:28:36,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:36,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1587358488, now seen corresponding path program 1 times [2022-10-21 12:28:36,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:36,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632077468] [2022-10-21 12:28:36,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:36,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 12:28:36,300 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:36,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632077468] [2022-10-21 12:28:36,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632077468] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:28:36,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:28:36,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-10-21 12:28:36,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002571009] [2022-10-21 12:28:36,301 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:28:36,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-21 12:28:36,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:36,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-21 12:28:36,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-10-21 12:28:36,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:36,304 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:36,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.235294117647059) internal successors, (106), 18 states have internal predecessors, (106), 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 12:28:36,304 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:36,304 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:28:36,304 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:28:36,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-21 12:28:36,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-21 12:28:36,907 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:28:36,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:36,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1163065483, now seen corresponding path program 1 times [2022-10-21 12:28:36,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:36,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776278388] [2022-10-21 12:28:36,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:36,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:37,180 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 12:28:37,180 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:37,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776278388] [2022-10-21 12:28:37,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776278388] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:28:37,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:28:37,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-10-21 12:28:37,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083224541] [2022-10-21 12:28:37,181 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:28:37,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-21 12:28:37,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:37,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-21 12:28:37,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-10-21 12:28:37,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:37,182 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:37,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.526315789473684) internal successors, (124), 20 states have internal predecessors, (124), 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 12:28:37,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:37,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:28:37,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-10-21 12:28:37,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:40,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:40,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:28:40,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-21 12:28:40,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-21 12:28:40,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 12:28:40,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-21 12:28:40,076 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-10-21 12:28:40,077 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-21 12:28:40,081 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 12:28:40,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 12:28:40,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 12:28:40,083 INFO L229 MonitoredProcess]: Starting monitored process 8 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 12:28:40,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2022-10-21 12:28:40,086 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-21 12:28:40,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 12:28:40,086 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;@3830f858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 12:28:40,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 12:28:40,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 12:28:40,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:40,157 INFO L85 PathProgramCache]: Analyzing trace with hash -546679936, now seen corresponding path program 1 times [2022-10-21 12:28:40,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:40,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448370682] [2022-10-21 12:28:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:40,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-10-21 12:28:40,172 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:40,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448370682] [2022-10-21 12:28:40,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448370682] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 12:28:40,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 12:28:40,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-21 12:28:40,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20579283] [2022-10-21 12:28:40,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 12:28:40,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-21 12:28:40,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:40,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-21 12:28:40,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-21 12:28:40,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:40,173 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:40,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 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 12:28:40,173 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:40,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:40,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-21 12:28:40,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 12:28:40,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:40,179 INFO L85 PathProgramCache]: Analyzing trace with hash 757713793, now seen corresponding path program 1 times [2022-10-21 12:28:40,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:40,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356158068] [2022-10-21 12:28:40,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:40,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-10-21 12:28:40,198 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:40,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356158068] [2022-10-21 12:28:40,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356158068] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 12:28:40,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 12:28:40,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-21 12:28:40,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468498013] [2022-10-21 12:28:40,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 12:28:40,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-21 12:28:40,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:40,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-21 12:28:40,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-21 12:28:40,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:40,201 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:40,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 12:28:40,201 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:40,201 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:40,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:40,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 12:28:40,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-21 12:28:40,226 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 12:28:40,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:40,226 INFO L85 PathProgramCache]: Analyzing trace with hash 101465970, now seen corresponding path program 1 times [2022-10-21 12:28:40,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:40,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156298578] [2022-10-21 12:28:40,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:40,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-10-21 12:28:40,256 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:40,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156298578] [2022-10-21 12:28:40,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156298578] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:28:40,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:28:40,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 12:28:40,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904875170] [2022-10-21 12:28:40,256 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:28:40,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 12:28:40,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:40,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 12:28:40,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 12:28:40,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:40,257 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:40,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 12:28:40,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:40,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 12:28:40,258 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:40,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:40,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 12:28:40,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 12:28:40,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-21 12:28:40,309 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 12:28:40,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:40,310 INFO L85 PathProgramCache]: Analyzing trace with hash 887729252, now seen corresponding path program 1 times [2022-10-21 12:28:40,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:40,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75759107] [2022-10-21 12:28:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:40,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-10-21 12:28:40,355 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:40,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75759107] [2022-10-21 12:28:40,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75759107] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:28:40,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:28:40,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 12:28:40,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126296641] [2022-10-21 12:28:40,356 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:28:40,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 12:28:40,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:40,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 12:28:40,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-21 12:28:40,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:40,357 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:40,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 12:28:40,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:40,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 12:28:40,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-21 12:28:40,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:49,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:49,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 12:28:49,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 12:28:49,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 12:28:49,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 12:28:49,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-21 12:28:49,961 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-10-21 12:28:49,961 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/3) [2022-10-21 12:28:49,967 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 12:28:49,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 12:28:49,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 12:28:49,998 INFO L229 MonitoredProcess]: Starting monitored process 9 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 12:28:50,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2022-10-21 12:28:50,002 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-21 12:28:50,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 12:28:50,002 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;@3830f858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 12:28:50,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 12:28:50,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 12:28:50,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:50,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1110197240, now seen corresponding path program 1 times [2022-10-21 12:28:50,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:50,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960175706] [2022-10-21 12:28:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:50,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 12:28:50,055 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-21 12:28:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 12:28:50,072 INFO L130 FreeRefinementEngine]: Strategy BADGER found a feasible trace [2022-10-21 12:28:50,072 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-21 12:28:50,073 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 12:28:50,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-10-21 12:28:50,324 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 12:28:50,324 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/3) [2022-10-21 12:28:50,324 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-21 12:28:50,324 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-10-21 12:28:50,376 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-10-21 12:28:50,378 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 12:28:50,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 12:28:50,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 12:28:50,380 INFO L229 MonitoredProcess]: Starting monitored process 10 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 12:28:50,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2022-10-21 12:28:50,414 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-21 12:28:50,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 12:28:50,414 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;@3830f858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 12:28:50,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 12:28:50,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:28:50,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:50,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1701534389, now seen corresponding path program 1 times [2022-10-21 12:28:50,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:50,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061837962] [2022-10-21 12:28:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:50,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:50,552 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 12:28:50,552 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:50,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061837962] [2022-10-21 12:28:50,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061837962] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 12:28:50,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 12:28:50,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-21 12:28:50,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712676662] [2022-10-21 12:28:50,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 12:28:50,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-21 12:28:50,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:50,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-21 12:28:50,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-10-21 12:28:50,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:50,553 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:50,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 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 12:28:50,554 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:50,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:50,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-10-21 12:28:50,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:28:50,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1126633146, now seen corresponding path program 1 times [2022-10-21 12:28:50,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:50,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144710872] [2022-10-21 12:28:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:50,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 12:28:50,933 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:50,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144710872] [2022-10-21 12:28:50,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144710872] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:28:50,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:28:50,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-10-21 12:28:50,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359819472] [2022-10-21 12:28:50,934 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:28:50,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-21 12:28:50,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:50,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-21 12:28:50,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-10-21 12:28:50,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:50,935 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:50,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 15 states have internal predecessors, (88), 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 12:28:50,935 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:50,935 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:51,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:51,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:28:51,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-10-21 12:28:51,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:28:51,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:51,282 INFO L85 PathProgramCache]: Analyzing trace with hash 129282560, now seen corresponding path program 1 times [2022-10-21 12:28:51,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:51,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057445572] [2022-10-21 12:28:51,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:51,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 12:28:51,496 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057445572] [2022-10-21 12:28:51,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057445572] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:28:51,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:28:51,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-10-21 12:28:51,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180519146] [2022-10-21 12:28:51,497 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:28:51,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-21 12:28:51,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:51,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-21 12:28:51,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-10-21 12:28:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:51,498 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:51,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.235294117647059) internal successors, (106), 18 states have internal predecessors, (106), 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 12:28:51,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:51,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:28:51,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:52,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:52,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:28:52,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-21 12:28:52,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-10-21 12:28:52,015 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:28:52,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:52,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1247368775, now seen corresponding path program 1 times [2022-10-21 12:28:52,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:52,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65667717] [2022-10-21 12:28:52,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:52,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:52,266 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 12:28:52,266 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:52,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65667717] [2022-10-21 12:28:52,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65667717] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:28:52,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:28:52,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-10-21 12:28:52,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378738436] [2022-10-21 12:28:52,267 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:28:52,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-21 12:28:52,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:52,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-21 12:28:52,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-10-21 12:28:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:52,268 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:52,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.526315789473684) internal successors, (124), 20 states have internal predecessors, (124), 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 12:28:52,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:52,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:28:52,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-10-21 12:28:52,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:28:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-21 12:28:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-21 12:28:52,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-10-21 12:28:52,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:28:52,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:28:52,969 INFO L85 PathProgramCache]: Analyzing trace with hash -882827953, now seen corresponding path program 1 times [2022-10-21 12:28:52,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:28:52,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953755563] [2022-10-21 12:28:52,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:28:52,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:28:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:28:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 12:28:53,266 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:28:53,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953755563] [2022-10-21 12:28:53,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953755563] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:28:53,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:28:53,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-10-21 12:28:53,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742136922] [2022-10-21 12:28:53,266 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:28:53,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-21 12:28:53,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:28:53,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-21 12:28:53,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-10-21 12:28:53,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:28:53,267 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:28:53,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.761904761904762) internal successors, (142), 22 states have internal predecessors, (142), 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 12:28:53,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:28:53,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:28:53,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-10-21 12:28:53,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2022-10-21 12:28:53,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:29:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:29:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:29:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-21 12:29:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-21 12:29:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-21 12:29:34,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 12:29:34,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-10-21 12:29:34,857 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-10-21 12:29:34,858 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-21 12:29:34,859 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 12:29:34,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 12:29:34,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 12:29:34,861 INFO L229 MonitoredProcess]: Starting monitored process 11 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 12:29:34,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (11)] Waiting until timeout for monitored process [2022-10-21 12:29:34,870 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-21 12:29:34,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 12:29:34,870 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;@3830f858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 12:29:34,870 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 12:29:34,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 12:29:34,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:29:34,909 INFO L85 PathProgramCache]: Analyzing trace with hash 42424352, now seen corresponding path program 1 times [2022-10-21 12:29:34,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:29:34,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907675126] [2022-10-21 12:29:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:29:34,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:29:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 12:29:34,922 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-21 12:29:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 12:29:34,941 INFO L130 FreeRefinementEngine]: Strategy BADGER found a feasible trace [2022-10-21 12:29:34,941 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-21 12:29:34,941 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 12:29:34,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-10-21 12:29:34,941 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 12:29:34,941 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/3) [2022-10-21 12:29:34,942 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-21 12:29:34,942 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-10-21 12:29:34,958 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-10-21 12:29:34,960 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 12:29:34,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 12:29:34,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 12:29:34,961 INFO L229 MonitoredProcess]: Starting monitored process 12 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 12:29:34,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (12)] Waiting until timeout for monitored process [2022-10-21 12:29:34,982 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-21 12:29:34,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 12:29:34,983 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;@3830f858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 12:29:34,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 12:29:34,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:29:34,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:29:34,996 INFO L85 PathProgramCache]: Analyzing trace with hash -291277579, now seen corresponding path program 1 times [2022-10-21 12:29:34,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:29:34,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909242032] [2022-10-21 12:29:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:29:34,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:29:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:29:35,103 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 12:29:35,103 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:29:35,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909242032] [2022-10-21 12:29:35,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909242032] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 12:29:35,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 12:29:35,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-21 12:29:35,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733451997] [2022-10-21 12:29:35,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 12:29:35,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-21 12:29:35,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:29:35,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-21 12:29:35,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-10-21 12:29:35,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:29:35,106 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:29:35,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 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 12:29:35,106 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:29:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:29:35,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-10-21 12:29:35,287 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:29:35,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:29:35,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1161260594, now seen corresponding path program 1 times [2022-10-21 12:29:35,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:29:35,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260292838] [2022-10-21 12:29:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:29:35,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:29:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:29:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 12:29:35,483 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:29:35,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260292838] [2022-10-21 12:29:35,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260292838] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:29:35,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:29:35,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-10-21 12:29:35,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745088926] [2022-10-21 12:29:35,484 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:29:35,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-21 12:29:35,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:29:35,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-21 12:29:35,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-10-21 12:29:35,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:29:35,485 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:29:35,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 15 states have internal predecessors, (88), 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 12:29:35,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:29:35,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:29:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:29:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:29:35,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-10-21 12:29:35,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:29:35,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:29:35,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1907453720, now seen corresponding path program 1 times [2022-10-21 12:29:35,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:29:35,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756700318] [2022-10-21 12:29:35,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:29:35,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:29:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:29:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 12:29:36,061 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:29:36,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756700318] [2022-10-21 12:29:36,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756700318] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:29:36,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:29:36,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-10-21 12:29:36,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056760599] [2022-10-21 12:29:36,062 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:29:36,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-21 12:29:36,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:29:36,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-21 12:29:36,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-10-21 12:29:36,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:29:36,065 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:29:36,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.235294117647059) internal successors, (106), 18 states have internal predecessors, (106), 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 12:29:36,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:29:36,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:29:36,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:29:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:29:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:29:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-21 12:29:36,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-10-21 12:29:36,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:29:36,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:29:36,784 INFO L85 PathProgramCache]: Analyzing trace with hash -205274109, now seen corresponding path program 1 times [2022-10-21 12:29:36,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:29:36,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054106466] [2022-10-21 12:29:36,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:29:36,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:29:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:29:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 12:29:37,066 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:29:37,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054106466] [2022-10-21 12:29:37,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054106466] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:29:37,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:29:37,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-10-21 12:29:37,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151078424] [2022-10-21 12:29:37,067 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:29:37,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-21 12:29:37,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:29:37,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-21 12:29:37,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-10-21 12:29:37,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:29:37,068 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:29:37,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.526315789473684) internal successors, (124), 20 states have internal predecessors, (124), 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 12:29:37,068 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:29:37,068 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:29:37,068 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-10-21 12:29:37,068 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:29:37,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:29:37,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:29:37,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-21 12:29:37,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-21 12:29:37,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-10-21 12:29:37,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:29:37,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:29:37,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1458408671, now seen corresponding path program 1 times [2022-10-21 12:29:37,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:29:37,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975200034] [2022-10-21 12:29:37,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:29:37,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:29:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:29:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 12:29:37,929 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:29:37,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975200034] [2022-10-21 12:29:37,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975200034] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:29:37,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:29:37,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-10-21 12:29:37,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746990046] [2022-10-21 12:29:37,929 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:29:37,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-21 12:29:37,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:29:37,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-21 12:29:37,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-10-21 12:29:37,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:29:37,930 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:29:37,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.761904761904762) internal successors, (142), 22 states have internal predecessors, (142), 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 12:29:37,930 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:29:37,930 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:29:37,930 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-10-21 12:29:37,930 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2022-10-21 12:29:37,930 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:29:38,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:29:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:29:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-21 12:29:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-21 12:29:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-10-21 12:29:38,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-10-21 12:29:38,645 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 12:29:38,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 12:29:38,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1797545276, now seen corresponding path program 1 times [2022-10-21 12:29:38,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 12:29:38,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529830250] [2022-10-21 12:29:38,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 12:29:38,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 12:29:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 12:29:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 12:29:39,046 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 12:29:39,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529830250] [2022-10-21 12:29:39,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529830250] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 12:29:39,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 12:29:39,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-10-21 12:29:39,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329554126] [2022-10-21 12:29:39,047 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 12:29:39,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-21 12:29:39,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 12:29:39,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-21 12:29:39,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-10-21 12:29:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 12:29:39,048 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 12:29:39,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.956521739130435) internal successors, (160), 24 states have internal predecessors, (160), 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 12:29:39,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 12:29:39,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 12:29:39,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-10-21 12:29:39,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2022-10-21 12:29:39,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2022-10-21 12:29:39,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.