java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/Arrays/regression/ITE.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 09:52:19,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 09:52:19,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 09:52:19,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 09:52:19,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 09:52:19,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 09:52:19,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 09:52:19,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 09:52:19,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 09:52:19,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 09:52:19,033 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 09:52:19,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 09:52:19,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 09:52:19,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 09:52:19,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 09:52:19,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 09:52:19,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 09:52:19,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 09:52:19,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 09:52:19,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 09:52:19,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 09:52:19,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 09:52:19,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 09:52:19,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 09:52:19,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 09:52:19,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 09:52:19,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 09:52:19,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 09:52:19,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 09:52:19,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 09:52:19,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 09:52:19,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 09:52:19,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 09:52:19,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 09:52:19,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 09:52:19,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 09:52:19,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 09:52:19,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 09:52:19,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 09:52:19,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 09:52:19,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 09:52:19,109 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 09:52:19,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 09:52:19,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 09:52:19,134 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 09:52:19,135 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 09:52:19,136 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/Arrays/regression/ITE.bpl [2019-08-05 09:52:19,136 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/Arrays/regression/ITE.bpl' [2019-08-05 09:52:19,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 09:52:19,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 09:52:19,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 09:52:19,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 09:52:19,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 09:52:19,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ITE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:19" (1/1) ... [2019-08-05 09:52:19,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ITE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:19" (1/1) ... [2019-08-05 09:52:19,209 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 09:52:19,210 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 09:52:19,210 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 09:52:19,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 09:52:19,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 09:52:19,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 09:52:19,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 09:52:19,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ITE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:19" (1/1) ... [2019-08-05 09:52:19,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ITE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:19" (1/1) ... [2019-08-05 09:52:19,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ITE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:19" (1/1) ... [2019-08-05 09:52:19,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ITE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:19" (1/1) ... [2019-08-05 09:52:19,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ITE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:19" (1/1) ... [2019-08-05 09:52:19,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ITE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:19" (1/1) ... [2019-08-05 09:52:19,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ITE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:19" (1/1) ... [2019-08-05 09:52:19,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 09:52:19,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 09:52:19,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 09:52:19,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 09:52:19,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ITE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-05 09:52:19,303 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-08-05 09:52:19,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-05 09:52:19,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-05 09:52:19,540 INFO L275 CfgBuilder]: Using library mode [2019-08-05 09:52:19,541 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 09:52:19,542 INFO L202 PluginConnector]: Adding new model ITE.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 09:52:19 BoogieIcfgContainer [2019-08-05 09:52:19,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 09:52:19,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 09:52:19,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 09:52:19,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 09:52:19,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ITE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:19" (1/2) ... [2019-08-05 09:52:19,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b55b4e8 and model type ITE.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 09:52:19, skipping insertion in model container [2019-08-05 09:52:19,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ITE.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 09:52:19" (2/2) ... [2019-08-05 09:52:19,552 INFO L109 eAbstractionObserver]: Analyzing ICFG ITE.bpl [2019-08-05 09:52:19,563 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 09:52:19,573 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 09:52:19,592 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 09:52:19,623 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 09:52:19,623 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 09:52:19,624 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 09:52:19,624 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 09:52:19,624 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 09:52:19,624 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 09:52:19,624 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 09:52:19,625 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 09:52:19,625 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 09:52:19,639 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2019-08-05 09:52:19,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 09:52:19,648 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:19,649 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 09:52:19,651 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:19,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:19,658 INFO L82 PathProgramCache]: Analyzing trace with hash 962, now seen corresponding path program 1 times [2019-08-05 09:52:19,708 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 09:52:19,756 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2019-08-05 09:52:19,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 09:52:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 09:52:19,828 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 09:52:19,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 09:52:19,832 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 09:52:19,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 09:52:19,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 09:52:19,846 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2019-08-05 09:52:19,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 09:52:19,865 INFO L93 Difference]: Finished difference Result 3 states and 2 transitions. [2019-08-05 09:52:19,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 09:52:19,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 09:52:19,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 09:52:19,875 INFO L225 Difference]: With dead ends: 3 [2019-08-05 09:52:19,876 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 09:52:19,878 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 09:52:19,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 09:52:19,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 09:52:19,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 09:52:19,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 09:52:19,907 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2019-08-05 09:52:19,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 09:52:19,908 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 09:52:19,908 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 09:52:19,908 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 09:52:19,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 09:52:19,914 INFO L202 PluginConnector]: Adding new model ITE.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 09:52:19 BoogieIcfgContainer [2019-08-05 09:52:19,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 09:52:19,918 INFO L168 Benchmark]: Toolchain (without parser) took 742.03 ms. Allocated memory is still 134.7 MB. Free memory was 111.1 MB in the beginning and 80.4 MB in the end (delta: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:19,919 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 134.7 MB. Free memory is still 112.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 09:52:19,920 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.20 ms. Allocated memory is still 134.7 MB. Free memory was 111.1 MB in the beginning and 109.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:19,922 INFO L168 Benchmark]: Boogie Preprocessor took 19.59 ms. Allocated memory is still 134.7 MB. Free memory was 109.0 MB in the beginning and 108.1 MB in the end (delta: 839.1 kB). Peak memory consumption was 839.1 kB. Max. memory is 7.1 GB. [2019-08-05 09:52:19,924 INFO L168 Benchmark]: RCFGBuilder took 309.87 ms. Allocated memory is still 134.7 MB. Free memory was 108.1 MB in the beginning and 99.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:19,926 INFO L168 Benchmark]: TraceAbstraction took 370.47 ms. Allocated memory is still 134.7 MB. Free memory was 99.2 MB in the beginning and 80.4 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:19,930 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 134.7 MB. Free memory is still 112.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.20 ms. Allocated memory is still 134.7 MB. Free memory was 111.1 MB in the beginning and 109.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.59 ms. Allocated memory is still 134.7 MB. Free memory was 109.0 MB in the beginning and 108.1 MB in the end (delta: 839.1 kB). Peak memory consumption was 839.1 kB. Max. memory is 7.1 GB. * RCFGBuilder took 309.87 ms. Allocated memory is still 134.7 MB. Free memory was 108.1 MB in the beginning and 99.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 370.47 ms. Allocated memory is still 134.7 MB. Free memory was 99.2 MB in the beginning and 80.4 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 locations, 1 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 SizeOfPredicates, 3 NumberOfNonLiveVariables, 8 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...