/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/ring_2w1r-2.line918.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-09-30 07:51:36,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-30 07:51:36,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-30 07:51:36,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-30 07:51:36,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-30 07:51:36,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-30 07:51:36,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-30 07:51:36,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-30 07:51:36,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-30 07:51:36,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-30 07:51:36,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-30 07:51:36,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-30 07:51:36,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-30 07:51:36,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-30 07:51:36,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-30 07:51:36,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-30 07:51:36,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-30 07:51:37,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-30 07:51:37,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-30 07:51:37,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-30 07:51:37,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-30 07:51:37,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-30 07:51:37,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-30 07:51:37,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-30 07:51:37,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-30 07:51:37,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-30 07:51:37,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-30 07:51:37,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-30 07:51:37,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-30 07:51:37,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-30 07:51:37,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-30 07:51:37,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-30 07:51:37,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-30 07:51:37,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-30 07:51:37,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-30 07:51:37,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-30 07:51:37,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-30 07:51:37,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-30 07:51:37,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-30 07:51:37,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-30 07:51:37,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-30 07:51:37,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-09-30 07:51:37,067 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-30 07:51:37,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-30 07:51:37,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-30 07:51:37,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-30 07:51:37,068 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-30 07:51:37,068 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-30 07:51:37,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-30 07:51:37,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-30 07:51:37,069 INFO L138 SettingsManager]: * Use SBE=true [2022-09-30 07:51:37,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-30 07:51:37,070 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-30 07:51:37,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-30 07:51:37,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-30 07:51:37,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-30 07:51:37,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-30 07:51:37,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-30 07:51:37,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-30 07:51:37,071 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-30 07:51:37,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-30 07:51:37,071 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-30 07:51:37,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-30 07:51:37,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-30 07:51:37,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-30 07:51:37,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-30 07:51:37,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-30 07:51:37,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-30 07:51:37,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-30 07:51:37,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-30 07:51:37,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-30 07:51:37,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-30 07:51:37,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-30 07:51:37,074 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-30 07:51:37,074 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-09-30 07:51:37,074 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-09-30 07:51:37,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-30 07:51:37,074 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-09-30 07:51:37,075 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-09-30 07:51:37,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-09-30 07:51:37,075 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-30 07:51:37,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-30 07:51:37,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-30 07:51:37,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-30 07:51:37,296 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-30 07:51:37,297 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-30 07:51:37,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/ring_2w1r-2.line918.bpl [2022-09-30 07:51:37,298 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/ring_2w1r-2.line918.bpl' [2022-09-30 07:51:37,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-30 07:51:37,353 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-09-30 07:51:37,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-30 07:51:37,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-30 07:51:37,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-30 07:51:37,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ring_2w1r-2.line918.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 07:51:37" (1/1) ... [2022-09-30 07:51:37,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ring_2w1r-2.line918.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 07:51:37" (1/1) ... [2022-09-30 07:51:37,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ring_2w1r-2.line918.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 07:51:37" (1/1) ... [2022-09-30 07:51:37,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ring_2w1r-2.line918.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 07:51:37" (1/1) ... [2022-09-30 07:51:37,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ring_2w1r-2.line918.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 07:51:37" (1/1) ... [2022-09-30 07:51:37,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ring_2w1r-2.line918.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 07:51:37" (1/1) ... [2022-09-30 07:51:37,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ring_2w1r-2.line918.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 07:51:37" (1/1) ... [2022-09-30 07:51:37,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-30 07:51:37,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-30 07:51:37,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-30 07:51:37,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-30 07:51:37,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ring_2w1r-2.line918.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 07:51:37" (1/1) ... [2022-09-30 07:51:37,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-30 07:51:37,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 07:51:37,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-30 07:51:37,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-30 07:51:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-09-30 07:51:37,546 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-09-30 07:51:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-09-30 07:51:37,546 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-09-30 07:51:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-30 07:51:37,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-30 07:51:37,548 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-30 07:51:37,718 INFO L234 CfgBuilder]: Building ICFG [2022-09-30 07:51:37,727 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-30 07:51:38,312 INFO L275 CfgBuilder]: Performing block encoding [2022-09-30 07:51:38,335 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-30 07:51:38,335 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-30 07:51:38,337 INFO L202 PluginConnector]: Adding new model ring_2w1r-2.line918.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 07:51:38 BoogieIcfgContainer [2022-09-30 07:51:38,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-30 07:51:38,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-30 07:51:38,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-30 07:51:38,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-30 07:51:38,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring_2w1r-2.line918.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 07:51:37" (1/2) ... [2022-09-30 07:51:38,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1040a277 and model type ring_2w1r-2.line918.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 07:51:38, skipping insertion in model container [2022-09-30 07:51:38,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring_2w1r-2.line918.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 07:51:38" (2/2) ... [2022-09-30 07:51:38,348 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-2.line918.bpl [2022-09-30 07:51:38,354 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-30 07:51:38,362 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-30 07:51:38,362 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-30 07:51:38,362 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-30 07:51:38,515 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-30 07:51:38,562 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 07:51:38,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 07:51:38,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 07:51:38,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 07:51:38,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-09-30 07:51:38,605 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 07:51:38,614 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 07:51:38,650 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;@78daedb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 07:51:38,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 07:51:38,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 07:51:38,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 07:51:38,885 INFO L85 PathProgramCache]: Analyzing trace with hash 271559353, now seen corresponding path program 1 times [2022-09-30 07:51:38,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 07:51:38,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852549904] [2022-09-30 07:51:38,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 07:51:38,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 07:51:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 07:51:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 07:51:39,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 07:51:39,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852549904] [2022-09-30 07:51:39,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852549904] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 07:51:39,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 07:51:39,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-30 07:51:39,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602750450] [2022-09-30 07:51:39,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 07:51:39,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-30 07:51:39,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 07:51:39,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-30 07:51:39,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-30 07:51:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:39,250 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 07:51:39,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 113.0) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 07:51:39,251 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:39,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:39,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-30 07:51:39,283 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 07:51:39,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 07:51:39,284 INFO L85 PathProgramCache]: Analyzing trace with hash 391679226, now seen corresponding path program 1 times [2022-09-30 07:51:39,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 07:51:39,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748563587] [2022-09-30 07:51:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 07:51:39,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 07:51:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 07:51:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 07:51:39,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 07:51:39,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748563587] [2022-09-30 07:51:39,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748563587] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 07:51:39,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 07:51:39,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-30 07:51:39,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158514882] [2022-09-30 07:51:39,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 07:51:39,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-30 07:51:39,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 07:51:39,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-30 07:51:39,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-30 07:51:39,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:39,445 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 07:51:39,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 07:51:39,446 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:39,446 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:39,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-30 07:51:39,609 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 07:51:39,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 07:51:39,610 INFO L85 PathProgramCache]: Analyzing trace with hash -56199509, now seen corresponding path program 1 times [2022-09-30 07:51:39,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 07:51:39,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651784690] [2022-09-30 07:51:39,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 07:51:39,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 07:51:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 07:51:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 07:51:39,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 07:51:39,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651784690] [2022-09-30 07:51:39,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651784690] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 07:51:39,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360627087] [2022-09-30 07:51:39,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 07:51:39,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 07:51:39,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 07:51:39,850 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 07:51:39,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-30 07:51:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 07:51:40,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 2 conjunts are in the unsatisfiable core [2022-09-30 07:51:40,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 07:51:40,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 07:51:40,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-30 07:51:40,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360627087] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 07:51:40,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-30 07:51:40,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-09-30 07:51:40,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257942688] [2022-09-30 07:51:40,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 07:51:40,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-30 07:51:40,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 07:51:40,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-30 07:51:40,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-30 07:51:40,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:40,196 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 07:51:40,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 07:51:40,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:40,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:40,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:40,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:40,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:40,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:40,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-30 07:51:40,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-30 07:51:40,545 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 07:51:40,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 07:51:40,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1059656899, now seen corresponding path program 1 times [2022-09-30 07:51:40,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 07:51:40,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383646197] [2022-09-30 07:51:40,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 07:51:40,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 07:51:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 07:51:40,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-30 07:51:40,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 07:51:40,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383646197] [2022-09-30 07:51:40,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383646197] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 07:51:40,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69663987] [2022-09-30 07:51:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 07:51:40,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 07:51:40,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 07:51:40,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 07:51:40,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-30 07:51:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 07:51:40,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 3 conjunts are in the unsatisfiable core [2022-09-30 07:51:40,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 07:51:41,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-30 07:51:41,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 07:51:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-30 07:51:41,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69663987] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 07:51:41,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 07:51:41,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-09-30 07:51:41,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245974654] [2022-09-30 07:51:41,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 07:51:41,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-30 07:51:41,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 07:51:41,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-30 07:51:41,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-30 07:51:41,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:41,100 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 07:51:41,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 07:51:41,100 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:41,101 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:41,101 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:41,101 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:41,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:41,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:41,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:41,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-30 07:51:41,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-30 07:51:41,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 07:51:41,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 07:51:41,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 07:51:41,407 INFO L85 PathProgramCache]: Analyzing trace with hash 523943892, now seen corresponding path program 2 times [2022-09-30 07:51:41,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 07:51:41,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329966946] [2022-09-30 07:51:41,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 07:51:41,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 07:51:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 07:51:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-09-30 07:51:41,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 07:51:41,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329966946] [2022-09-30 07:51:41,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329966946] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 07:51:41,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 07:51:41,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-30 07:51:41,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336904217] [2022-09-30 07:51:41,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 07:51:41,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-30 07:51:41,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 07:51:41,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-30 07:51:41,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-30 07:51:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:41,615 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 07:51:41,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 07:51:41,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:41,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:41,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:41,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-09-30 07:51:41,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:41,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-30 07:51:41,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-30 07:51:41,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-30 07:51:41,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 07:51:41,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 07:51:41,726 INFO L85 PathProgramCache]: Analyzing trace with hash 985594148, now seen corresponding path program 1 times [2022-09-30 07:51:41,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 07:51:41,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178652991] [2022-09-30 07:51:41,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 07:51:41,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 07:51:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 07:51:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-09-30 07:51:41,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 07:51:41,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178652991] [2022-09-30 07:51:41,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178652991] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 07:51:41,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973107597] [2022-09-30 07:51:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 07:51:41,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 07:51:41,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 07:51:41,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 07:51:41,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-30 07:51:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 07:51:42,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 1330 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-30 07:51:42,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 07:51:42,610 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 382 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-30 07:51:42,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 07:51:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 382 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-30 07:51:42,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973107597] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 07:51:42,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 07:51:42,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 12 [2022-09-30 07:51:42,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006574443] [2022-09-30 07:51:42,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 07:51:42,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-30 07:51:42,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 07:51:42,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-30 07:51:42,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-09-30 07:51:42,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:42,915 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 07:51:42,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.58333333333333) internal successors, (1051), 12 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 07:51:42,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:42,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:42,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:42,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-09-30 07:51:42,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-09-30 07:51:42,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:43,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:43,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:43,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:43,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-30 07:51:43,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-30 07:51:43,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-30 07:51:43,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-30 07:51:43,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 07:51:43,302 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 07:51:43,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 07:51:43,303 INFO L85 PathProgramCache]: Analyzing trace with hash -313036998, now seen corresponding path program 2 times [2022-09-30 07:51:43,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 07:51:43,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769856442] [2022-09-30 07:51:43,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 07:51:43,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 07:51:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 07:51:43,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2022-09-30 07:51:43,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 07:51:43,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769856442] [2022-09-30 07:51:43,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769856442] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 07:51:43,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612438504] [2022-09-30 07:51:43,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-30 07:51:43,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 07:51:43,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 07:51:43,865 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 07:51:43,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-30 07:51:44,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-30 07:51:44,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-30 07:51:44,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 35 conjunts are in the unsatisfiable core [2022-09-30 07:51:44,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 07:51:44,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 07:51:44,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 07:51:44,266 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-30 07:51:44,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-30 07:51:44,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-09-30 07:51:45,991 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-30 07:51:45,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-09-30 07:51:47,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1907 trivial. 0 not checked. [2022-09-30 07:51:47,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-30 07:51:47,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612438504] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 07:51:47,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-30 07:51:47,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [5] total 21 [2022-09-30 07:51:47,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249925949] [2022-09-30 07:51:47,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 07:51:47,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-30 07:51:47,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 07:51:47,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-30 07:51:47,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2022-09-30 07:51:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:47,443 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 07:51:47,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 24.41176470588235) internal successors, (415), 18 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 07:51:47,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:47,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:47,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:47,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-09-30 07:51:47,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-09-30 07:51:47,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-09-30 07:51:47,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:48,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:48,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:48,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:48,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-30 07:51:48,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-30 07:51:48,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-30 07:51:48,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-30 07:51:48,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-09-30 07:51:48,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 07:51:48,432 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 07:51:48,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 07:51:48,432 INFO L85 PathProgramCache]: Analyzing trace with hash -303254227, now seen corresponding path program 1 times [2022-09-30 07:51:48,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 07:51:48,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340618012] [2022-09-30 07:51:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 07:51:48,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 07:51:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 07:51:48,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2022-09-30 07:51:48,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 07:51:48,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340618012] [2022-09-30 07:51:48,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340618012] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 07:51:48,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789046281] [2022-09-30 07:51:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 07:51:48,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 07:51:48,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 07:51:48,796 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 07:51:48,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-30 07:51:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 07:51:49,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-30 07:51:49,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 07:51:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2022-09-30 07:51:49,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 07:51:49,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2022-09-30 07:51:49,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789046281] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 07:51:49,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 07:51:49,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-09-30 07:51:49,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135907] [2022-09-30 07:51:49,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 07:51:49,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-30 07:51:49,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 07:51:49,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-30 07:51:49,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-09-30 07:51:49,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:49,848 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 07:51:49,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 115.22222222222223) internal successors, (1037), 9 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 07:51:49,849 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:49,849 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:49,849 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:49,850 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-09-30 07:51:49,850 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-09-30 07:51:49,850 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-09-30 07:51:49,850 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-09-30 07:51:49,850 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:50,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:50,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:50,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-30 07:51:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-30 07:51:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-30 07:51:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-30 07:51:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-30 07:51:50,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-30 07:51:50,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 07:51:50,380 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 07:51:50,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 07:51:50,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1266173267, now seen corresponding path program 2 times [2022-09-30 07:51:50,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 07:51:50,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648603383] [2022-09-30 07:51:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 07:51:50,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 07:51:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 07:51:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 0 proven. 1947 refuted. 0 times theorem prover too weak. 1778 trivial. 0 not checked. [2022-09-30 07:51:51,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 07:51:51,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648603383] [2022-09-30 07:51:51,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648603383] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 07:51:51,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613637773] [2022-09-30 07:51:51,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-30 07:51:51,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 07:51:51,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 07:51:51,468 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 07:51:51,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-30 07:51:51,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-30 07:51:51,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-30 07:51:51,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 24 conjunts are in the unsatisfiable core [2022-09-30 07:51:51,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 07:51:54,050 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-30 07:51:54,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-30 07:51:54,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-09-30 07:51:56,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3725 trivial. 0 not checked. [2022-09-30 07:51:56,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-30 07:51:56,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613637773] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 07:51:56,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-30 07:51:56,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 18 [2022-09-30 07:51:56,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340511396] [2022-09-30 07:51:56,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 07:51:56,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-30 07:51:56,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 07:51:56,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-30 07:51:56,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-09-30 07:51:56,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:56,151 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 07:51:56,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 43.5) internal successors, (435), 11 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 07:51:56,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 07:51:56,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:56,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 07:51:56,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-09-30 07:51:56,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-09-30 07:51:56,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-09-30 07:51:56,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-09-30 07:51:56,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-09-30 07:51:56,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.