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/recursive/regression/bpl/UpAndDownGlobalReals.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:07:52,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:07:52,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:07:52,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:07:52,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:07:52,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:07:52,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:07:52,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:07:52,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:07:52,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:07:52,323 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:07:52,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:07:52,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:07:52,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:07:52,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:07:52,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:07:52,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:07:52,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:07:52,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:07:52,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:07:52,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:07:52,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:07:52,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:07:52,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:07:52,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 11:07:52,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 11:07:52,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 11:07:52,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 11:07:52,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 11:07:52,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 11:07:52,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:07:52,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:07:52,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:07:52,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:07:52,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:07:52,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:07:52,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:07:52,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:07:52,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:07:52,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:07:52,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:07:52,415 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:07:52,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:07:52,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:07:52,437 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:07:52,438 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:07:52,439 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/recursive/regression/bpl/UpAndDownGlobalReals.bpl [2019-08-05 11:07:52,439 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/recursive/regression/bpl/UpAndDownGlobalReals.bpl' [2019-08-05 11:07:52,475 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:07:52,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:07:52,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:07:52,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:07:52,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:07:52,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "UpAndDownGlobalReals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:52" (1/1) ... [2019-08-05 11:07:52,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "UpAndDownGlobalReals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:52" (1/1) ... [2019-08-05 11:07:52,515 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 11:07:52,516 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 11:07:52,516 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 11:07:52,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:07:52,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:07:52,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:07:52,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:07:52,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "UpAndDownGlobalReals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:52" (1/1) ... [2019-08-05 11:07:52,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "UpAndDownGlobalReals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:52" (1/1) ... [2019-08-05 11:07:52,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "UpAndDownGlobalReals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:52" (1/1) ... [2019-08-05 11:07:52,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "UpAndDownGlobalReals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:52" (1/1) ... [2019-08-05 11:07:52,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "UpAndDownGlobalReals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:52" (1/1) ... [2019-08-05 11:07:52,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "UpAndDownGlobalReals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:52" (1/1) ... [2019-08-05 11:07:52,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "UpAndDownGlobalReals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:52" (1/1) ... [2019-08-05 11:07:52,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:07:52,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:07:52,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:07:52,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:07:52,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "UpAndDownGlobalReals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:52" (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 11:07:52,607 INFO L130 BoogieDeclarations]: Found specification of procedure UpAndDownGlobal [2019-08-05 11:07:52,608 INFO L138 BoogieDeclarations]: Found implementation of procedure UpAndDownGlobal [2019-08-05 11:07:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure Main [2019-08-05 11:07:52,608 INFO L138 BoogieDeclarations]: Found implementation of procedure Main [2019-08-05 11:07:52,737 WARN L731 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-08-05 11:07:52,793 INFO L275 CfgBuilder]: Using library mode [2019-08-05 11:07:52,793 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 11:07:52,795 INFO L202 PluginConnector]: Adding new model UpAndDownGlobalReals.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:07:52 BoogieIcfgContainer [2019-08-05 11:07:52,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:07:52,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:07:52,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:07:52,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:07:52,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "UpAndDownGlobalReals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:52" (1/2) ... [2019-08-05 11:07:52,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e28498 and model type UpAndDownGlobalReals.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:07:52, skipping insertion in model container [2019-08-05 11:07:52,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "UpAndDownGlobalReals.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:07:52" (2/2) ... [2019-08-05 11:07:52,804 INFO L109 eAbstractionObserver]: Analyzing ICFG UpAndDownGlobalReals.bpl [2019-08-05 11:07:52,813 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:07:52,820 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-08-05 11:07:52,836 INFO L252 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-08-05 11:07:52,862 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:07:52,863 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:07:52,863 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:07:52,863 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:07:52,863 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:07:52,864 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:07:52,864 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:07:52,864 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:07:52,864 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:07:52,878 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-08-05 11:07:52,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-08-05 11:07:52,889 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:07:52,889 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-08-05 11:07:52,892 INFO L418 AbstractCegarLoop]: === Iteration 1 === [MainErr1ENSURES_VIOLATIONPOST_CONDITION, MainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:07:52,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:07:52,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1883654923, now seen corresponding path program 1 times [2019-08-05 11:07:52,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:07:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:07:52,984 WARN L254 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 11 conjunts are in the unsatisfiable core [2019-08-05 11:07:52,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:07:53,178 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 11:07:53,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:07:53,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 11:07:53,186 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 11:07:53,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 11:07:53,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-05 11:07:53,204 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 5 states. [2019-08-05 11:07:53,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:07:53,405 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-08-05 11:07:53,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 11:07:53,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-08-05 11:07:53,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:07:53,413 INFO L225 Difference]: With dead ends: 13 [2019-08-05 11:07:53,414 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 11:07:53,416 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-05 11:07:53,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 11:07:53,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 11:07:53,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 11:07:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 11:07:53,444 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-08-05 11:07:53,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:07:53,444 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 11:07:53,444 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 11:07:53,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 11:07:53,445 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 11:07:53,450 INFO L202 PluginConnector]: Adding new model UpAndDownGlobalReals.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:07:53 BoogieIcfgContainer [2019-08-05 11:07:53,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:07:53,453 INFO L168 Benchmark]: Toolchain (without parser) took 975.50 ms. Allocated memory is still 134.2 MB. Free memory was 111.7 MB in the beginning and 74.3 MB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. [2019-08-05 11:07:53,455 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 134.2 MB. Free memory was 113.0 MB in the beginning and 112.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 11:07:53,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.10 ms. Allocated memory is still 134.2 MB. Free memory was 111.7 MB in the beginning and 109.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-08-05 11:07:53,458 INFO L168 Benchmark]: Boogie Preprocessor took 20.59 ms. Allocated memory is still 134.2 MB. Free memory was 109.8 MB in the beginning and 108.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:07:53,459 INFO L168 Benchmark]: RCFGBuilder took 254.97 ms. Allocated memory is still 134.2 MB. Free memory was 108.7 MB in the beginning and 98.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-08-05 11:07:53,460 INFO L168 Benchmark]: TraceAbstraction took 653.84 ms. Allocated memory is still 134.2 MB. Free memory was 98.5 MB in the beginning and 74.3 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2019-08-05 11:07:53,464 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 134.2 MB. Free memory was 113.0 MB in the beginning and 112.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.10 ms. Allocated memory is still 134.2 MB. Free memory was 111.7 MB in the beginning and 109.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.59 ms. Allocated memory is still 134.2 MB. Free memory was 109.8 MB in the beginning and 108.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 254.97 ms. Allocated memory is still 134.2 MB. Free memory was 108.7 MB in the beginning and 98.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 653.84 ms. Allocated memory is still 134.2 MB. Free memory was 98.5 MB in the beginning and 74.3 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 11 locations, 2 error locations. SAFE Result, 0.5s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 2 SDslu, 6 SDs, 0 SdLazy, 34 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 132 SizeOfPredicates, 0 NumberOfNonLiveVariables, 17 ConjunctsInSsa, 11 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...