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/programs/regression/bpl/interprocedural/TestPreconditionYieldsSafetyOfCaller.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:09:00,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:09:00,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:09:00,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:09:00,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:09:00,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:09:00,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:09:00,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:09:00,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:09:00,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:09:00,361 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:09:00,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:09:00,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:09:00,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:09:00,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:09:00,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:09:00,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:09:00,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:09:00,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:09:00,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:09:00,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:09:00,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:09:00,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:09:00,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:09:00,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 11:09:00,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 11:09:00,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 11:09:00,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 11:09:00,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 11:09:00,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 11:09:00,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:09:00,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:09:00,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:09:00,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:09:00,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:09:00,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:09:00,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:09:00,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:09:00,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:09:00,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:09:00,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:09:00,456 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:09:00,479 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:09:00,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:09:00,483 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:09:00,483 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:09:00,484 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/interprocedural/TestPreconditionYieldsSafetyOfCaller.bpl [2019-08-05 11:09:00,484 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/interprocedural/TestPreconditionYieldsSafetyOfCaller.bpl' [2019-08-05 11:09:00,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:09:00,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:09:00,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:09:00,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:09:00,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:09:00,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "TestPreconditionYieldsSafetyOfCaller.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:00" (1/1) ... [2019-08-05 11:09:00,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "TestPreconditionYieldsSafetyOfCaller.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:00" (1/1) ... [2019-08-05 11:09:00,546 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 11:09:00,546 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 11:09:00,546 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 11:09:00,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:09:00,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:09:00,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:09:00,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:09:00,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "TestPreconditionYieldsSafetyOfCaller.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:00" (1/1) ... [2019-08-05 11:09:00,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "TestPreconditionYieldsSafetyOfCaller.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:00" (1/1) ... [2019-08-05 11:09:00,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "TestPreconditionYieldsSafetyOfCaller.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:00" (1/1) ... [2019-08-05 11:09:00,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "TestPreconditionYieldsSafetyOfCaller.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:00" (1/1) ... [2019-08-05 11:09:00,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "TestPreconditionYieldsSafetyOfCaller.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:00" (1/1) ... [2019-08-05 11:09:00,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "TestPreconditionYieldsSafetyOfCaller.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:00" (1/1) ... [2019-08-05 11:09:00,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "TestPreconditionYieldsSafetyOfCaller.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:00" (1/1) ... [2019-08-05 11:09:00,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:09:00,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:09:00,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:09:00,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:09:00,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "TestPreconditionYieldsSafetyOfCaller.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:00" (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 11:09:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure caller [2019-08-05 11:09:00,637 INFO L138 BoogieDeclarations]: Found implementation of procedure caller [2019-08-05 11:09:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure callee [2019-08-05 11:09:00,826 INFO L275 CfgBuilder]: Using library mode [2019-08-05 11:09:00,826 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 11:09:00,828 INFO L202 PluginConnector]: Adding new model TestPreconditionYieldsSafetyOfCaller.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:09:00 BoogieIcfgContainer [2019-08-05 11:09:00,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:09:00,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:09:00,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:09:00,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:09:00,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "TestPreconditionYieldsSafetyOfCaller.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:00" (1/2) ... [2019-08-05 11:09:00,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7485a378 and model type TestPreconditionYieldsSafetyOfCaller.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:09:00, skipping insertion in model container [2019-08-05 11:09:00,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "TestPreconditionYieldsSafetyOfCaller.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:09:00" (2/2) ... [2019-08-05 11:09:00,836 INFO L109 eAbstractionObserver]: Analyzing ICFG TestPreconditionYieldsSafetyOfCaller.bpl [2019-08-05 11:09:00,845 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:09:00,851 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 11:09:00,865 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 11:09:00,886 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:09:00,887 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:09:00,887 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:09:00,887 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:09:00,887 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:09:00,887 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:09:00,888 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:09:00,888 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:09:00,888 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:09:00,902 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2019-08-05 11:09:00,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 11:09:00,910 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:09:00,911 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 11:09:00,913 INFO L418 AbstractCegarLoop]: === Iteration 1 === [callerErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:09:00,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:09:00,919 INFO L82 PathProgramCache]: Analyzing trace with hash 962, now seen corresponding path program 1 times [2019-08-05 11:09:00,964 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:09:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:09:00,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 11:09:00,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:09:01,027 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 11:09:01,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:09:01,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 11:09:01,034 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:09:01,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:09:01,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:09:01,049 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2019-08-05 11:09:01,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:09:01,079 INFO L93 Difference]: Finished difference Result 3 states and 2 transitions. [2019-08-05 11:09:01,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:09:01,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 11:09:01,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:09:01,089 INFO L225 Difference]: With dead ends: 3 [2019-08-05 11:09:01,089 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 11:09:01,091 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 11:09:01,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 11:09:01,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 11:09:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 11:09:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 11:09:01,118 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2019-08-05 11:09:01,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:09:01,118 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 11:09:01,118 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:09:01,119 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 11:09:01,119 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 11:09:01,124 INFO L202 PluginConnector]: Adding new model TestPreconditionYieldsSafetyOfCaller.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:09:01 BoogieIcfgContainer [2019-08-05 11:09:01,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:09:01,128 INFO L168 Benchmark]: Toolchain (without parser) took 614.57 ms. Allocated memory is still 133.7 MB. Free memory was 108.6 MB in the beginning and 79.4 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:09:01,129 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 133.7 MB. Free memory is still 109.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 11:09:01,130 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.99 ms. Allocated memory is still 133.7 MB. Free memory was 108.6 MB in the beginning and 106.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:09:01,132 INFO L168 Benchmark]: Boogie Preprocessor took 17.97 ms. Allocated memory is still 133.7 MB. Free memory was 106.4 MB in the beginning and 105.6 MB in the end (delta: 857.4 kB). Peak memory consumption was 857.4 kB. Max. memory is 7.1 GB. [2019-08-05 11:09:01,133 INFO L168 Benchmark]: RCFGBuilder took 260.92 ms. Allocated memory is still 133.7 MB. Free memory was 105.6 MB in the beginning and 96.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-08-05 11:09:01,134 INFO L168 Benchmark]: TraceAbstraction took 295.46 ms. Allocated memory is still 133.7 MB. Free memory was 96.6 MB in the beginning and 79.4 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2019-08-05 11:09:01,138 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 0.21 ms. Allocated memory is still 133.7 MB. Free memory is still 109.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 35.99 ms. Allocated memory is still 133.7 MB. Free memory was 108.6 MB in the beginning and 106.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 17.97 ms. Allocated memory is still 133.7 MB. Free memory was 106.4 MB in the beginning and 105.6 MB in the end (delta: 857.4 kB). Peak memory consumption was 857.4 kB. Max. memory is 7.1 GB. * RCFGBuilder took 260.92 ms. Allocated memory is still 133.7 MB. Free memory was 105.6 MB in the beginning and 96.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 295.46 ms. Allocated memory is still 133.7 MB. Free memory was 96.6 MB in the beginning and 79.4 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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, 0 NumberOfNonLiveVariables, 5 ConjunctsInSsa, 2 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...