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/toy/tooDifficultLoopInvariant/InvariantSynthesisWpOverapproxIntRealNegationBug.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-04 21:42:25,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-04 21:42:25,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-04 21:42:25,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-04 21:42:25,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-04 21:42:25,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-04 21:42:25,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-04 21:42:25,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-04 21:42:25,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-04 21:42:25,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-04 21:42:25,195 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-04 21:42:25,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-04 21:42:25,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-04 21:42:25,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-04 21:42:25,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-04 21:42:25,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-04 21:42:25,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-04 21:42:25,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-04 21:42:25,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-04 21:42:25,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-04 21:42:25,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-04 21:42:25,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-04 21:42:25,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-04 21:42:25,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-04 21:42:25,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-04 21:42:25,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-04 21:42:25,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-04 21:42:25,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-04 21:42:25,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-04 21:42:25,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-04 21:42:25,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-04 21:42:25,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-04 21:42:25,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-04 21:42:25,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-04 21:42:25,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-04 21:42:25,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-04 21:42:25,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-04 21:42:25,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-04 21:42:25,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-04 21:42:25,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-04 21:42:25,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-04 21:42:25,268 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-04 21:42:25,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-04 21:42:25,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-04 21:42:25,289 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-04 21:42:25,289 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-04 21:42:25,290 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/InvariantSynthesisWpOverapproxIntRealNegationBug.bpl [2019-08-04 21:42:25,290 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/InvariantSynthesisWpOverapproxIntRealNegationBug.bpl' [2019-08-04 21:42:25,323 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-04 21:42:25,325 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-04 21:42:25,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-04 21:42:25,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-04 21:42:25,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-04 21:42:25,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "InvariantSynthesisWpOverapproxIntRealNegationBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:42:25" (1/1) ... [2019-08-04 21:42:25,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "InvariantSynthesisWpOverapproxIntRealNegationBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:42:25" (1/1) ... [2019-08-04 21:42:25,358 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-04 21:42:25,359 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-04 21:42:25,359 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-04 21:42:25,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-04 21:42:25,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-04 21:42:25,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-04 21:42:25,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-04 21:42:25,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "InvariantSynthesisWpOverapproxIntRealNegationBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:42:25" (1/1) ... [2019-08-04 21:42:25,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "InvariantSynthesisWpOverapproxIntRealNegationBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:42:25" (1/1) ... [2019-08-04 21:42:25,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "InvariantSynthesisWpOverapproxIntRealNegationBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:42:25" (1/1) ... [2019-08-04 21:42:25,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "InvariantSynthesisWpOverapproxIntRealNegationBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:42:25" (1/1) ... [2019-08-04 21:42:25,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "InvariantSynthesisWpOverapproxIntRealNegationBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:42:25" (1/1) ... [2019-08-04 21:42:25,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "InvariantSynthesisWpOverapproxIntRealNegationBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:42:25" (1/1) ... [2019-08-04 21:42:25,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "InvariantSynthesisWpOverapproxIntRealNegationBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:42:25" (1/1) ... [2019-08-04 21:42:25,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-04 21:42:25,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-04 21:42:25,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-04 21:42:25,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-04 21:42:25,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "InvariantSynthesisWpOverapproxIntRealNegationBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:42:25" (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 [2019-08-04 21:42:25,452 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-08-04 21:42:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-04 21:42:25,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-04 21:42:25,681 INFO L275 CfgBuilder]: Using library mode [2019-08-04 21:42:25,681 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-04 21:42:25,684 INFO L202 PluginConnector]: Adding new model InvariantSynthesisWpOverapproxIntRealNegationBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:42:25 BoogieIcfgContainer [2019-08-04 21:42:25,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-04 21:42:25,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-04 21:42:25,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-04 21:42:25,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-04 21:42:25,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "InvariantSynthesisWpOverapproxIntRealNegationBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:42:25" (1/2) ... [2019-08-04 21:42:25,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d225eb7 and model type InvariantSynthesisWpOverapproxIntRealNegationBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 09:42:25, skipping insertion in model container [2019-08-04 21:42:25,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "InvariantSynthesisWpOverapproxIntRealNegationBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:42:25" (2/2) ... [2019-08-04 21:42:25,697 INFO L109 eAbstractionObserver]: Analyzing ICFG InvariantSynthesisWpOverapproxIntRealNegationBug.bpl [2019-08-04 21:42:25,707 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-04 21:42:25,716 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-04 21:42:25,734 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-04 21:42:25,763 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-04 21:42:25,764 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-04 21:42:25,764 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-04 21:42:25,764 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-04 21:42:25,764 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-04 21:42:25,764 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-04 21:42:25,765 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-04 21:42:25,765 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-04 21:42:25,765 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-04 21:42:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2019-08-04 21:42:25,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-04 21:42:25,791 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:42:25,792 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-04 21:42:25,795 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-04 21:42:25,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:42:25,801 INFO L82 PathProgramCache]: Analyzing trace with hash 966, now seen corresponding path program 1 times [2019-08-04 21:42:25,852 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:42:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-04 21:42:25,879 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-04 21:42:25,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-04 21:42:25,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-04 21:42:25,914 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-04 21:42:25,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-04 21:42:25,918 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-04 21:42:25,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-04 21:42:25,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-04 21:42:25,935 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2019-08-04 21:42:25,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-04 21:42:25,966 INFO L93 Difference]: Finished difference Result 3 states and 3 transitions. [2019-08-04 21:42:25,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-04 21:42:25,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-04 21:42:25,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-04 21:42:25,977 INFO L225 Difference]: With dead ends: 3 [2019-08-04 21:42:25,977 INFO L226 Difference]: Without dead ends: 0 [2019-08-04 21:42:25,979 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 [2019-08-04 21:42:25,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-04 21:42:26,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-04 21:42:26,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-04 21:42:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-04 21:42:26,004 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2019-08-04 21:42:26,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-04 21:42:26,004 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-04 21:42:26,005 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-04 21:42:26,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-04 21:42:26,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-04 21:42:26,009 INFO L202 PluginConnector]: Adding new model InvariantSynthesisWpOverapproxIntRealNegationBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 09:42:26 BoogieIcfgContainer [2019-08-04 21:42:26,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-04 21:42:26,012 INFO L168 Benchmark]: Toolchain (without parser) took 686.05 ms. Allocated memory is still 135.3 MB. Free memory was 110.5 MB in the beginning and 81.0 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2019-08-04 21:42:26,013 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 135.3 MB. Free memory was 111.7 MB in the beginning and 111.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-08-04 21:42:26,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.88 ms. Allocated memory is still 135.3 MB. Free memory was 110.5 MB in the beginning and 108.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-08-04 21:42:26,015 INFO L168 Benchmark]: Boogie Preprocessor took 18.99 ms. Allocated memory is still 135.3 MB. Free memory was 108.6 MB in the beginning and 107.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-04 21:42:26,017 INFO L168 Benchmark]: RCFGBuilder took 303.23 ms. Allocated memory is still 135.3 MB. Free memory was 107.5 MB in the beginning and 98.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-08-04 21:42:26,018 INFO L168 Benchmark]: TraceAbstraction took 323.37 ms. Allocated memory is still 135.3 MB. Free memory was 98.3 MB in the beginning and 81.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2019-08-04 21:42:26,023 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 0.22 ms. Allocated memory is still 135.3 MB. Free memory was 111.7 MB in the beginning and 111.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 35.88 ms. Allocated memory is still 135.3 MB. Free memory was 110.5 MB in the beginning and 108.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 18.99 ms. Allocated memory is still 135.3 MB. Free memory was 108.6 MB in the beginning and 107.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 303.23 ms. Allocated memory is still 135.3 MB. Free memory was 107.5 MB in the beginning and 98.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 323.37 ms. Allocated memory is still 135.3 MB. Free memory was 98.3 MB in the beginning and 81.0 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: 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: 2 SDtfs, 2 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, 3 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...