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/nonlinear/Power1-Safe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:31:04,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:31:04,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:31:04,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:31:04,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:31:04,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:31:04,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:31:04,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:31:04,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:31:04,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:31:04,880 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:31:04,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:31:04,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:31:04,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:31:04,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:31:04,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:31:04,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:31:04,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:31:04,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:31:04,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:31:04,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:31:04,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:31:04,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:31:04,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:31:04,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:31:04,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:31:04,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:31:04,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:31:04,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:31:04,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:31:04,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:31:04,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:31:04,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:31:04,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:31:04,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:31:04,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:31:04,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:31:04,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:31:04,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:31:04,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:31:04,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:31:04,948 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:31:04,964 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:31:04,967 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:31:04,970 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:31:04,970 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:31:04,971 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/Power1-Safe.bpl [2019-08-05 10:31:04,971 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/Power1-Safe.bpl' [2019-08-05 10:31:05,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:31:05,010 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:31:05,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:31:05,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:31:05,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:31:05,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:05" (1/1) ... [2019-08-05 10:31:05,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:05" (1/1) ... [2019-08-05 10:31:05,040 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 10:31:05,041 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 10:31:05,041 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 10:31:05,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:31:05,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:31:05,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:31:05,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:31:05,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:05" (1/1) ... [2019-08-05 10:31:05,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:05" (1/1) ... [2019-08-05 10:31:05,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:05" (1/1) ... [2019-08-05 10:31:05,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:05" (1/1) ... [2019-08-05 10:31:05,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:05" (1/1) ... [2019-08-05 10:31:05,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:05" (1/1) ... [2019-08-05 10:31:05,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:05" (1/1) ... [2019-08-05 10:31:05,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:31:05,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:31:05,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:31:05,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:31:05,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:05" (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 10:31:05,125 INFO L124 BoogieDeclarations]: Specification and implementation of procedure power given in one single declaration [2019-08-05 10:31:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure power [2019-08-05 10:31:05,126 INFO L138 BoogieDeclarations]: Found implementation of procedure power [2019-08-05 10:31:05,202 WARN L731 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-08-05 10:31:05,401 INFO L275 CfgBuilder]: Using library mode [2019-08-05 10:31:05,401 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 10:31:05,403 INFO L202 PluginConnector]: Adding new model Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:31:05 BoogieIcfgContainer [2019-08-05 10:31:05,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:31:05,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:31:05,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:31:05,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:31:05,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:05" (1/2) ... [2019-08-05 10:31:05,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fff6098 and model type Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:31:05, skipping insertion in model container [2019-08-05 10:31:05,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:31:05" (2/2) ... [2019-08-05 10:31:05,412 INFO L109 eAbstractionObserver]: Analyzing ICFG Power1-Safe.bpl [2019-08-05 10:31:05,422 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:31:05,431 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:31:05,448 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:31:05,481 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:31:05,482 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:31:05,482 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:31:05,482 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:31:05,482 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:31:05,483 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:31:05,483 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:31:05,483 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:31:05,484 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:31:05,497 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2019-08-05 10:31:05,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 10:31:05,514 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:31:05,515 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 10:31:05,517 INFO L418 AbstractCegarLoop]: === Iteration 1 === [powerErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2019-08-05 10:31:05,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:31:05,523 INFO L82 PathProgramCache]: Analyzing trace with hash 39627, now seen corresponding path program 1 times [2019-08-05 10:31:05,576 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:31:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:31:05,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 10:31:05,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:31:05,661 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 10:31:05,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:31:05,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 10:31:05,667 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:31:05,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:31:05,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:31:05,681 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2019-08-05 10:31:05,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:31:05,736 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-05 10:31:05,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:31:05,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-08-05 10:31:05,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:31:05,751 INFO L225 Difference]: With dead ends: 8 [2019-08-05 10:31:05,751 INFO L226 Difference]: Without dead ends: 5 [2019-08-05 10:31:05,753 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:31:05,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-08-05 10:31:05,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-08-05 10:31:05,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-05 10:31:05,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-08-05 10:31:05,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-08-05 10:31:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:31:05,799 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-08-05 10:31:05,799 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:31:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-08-05 10:31:05,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:31:05,800 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:31:05,801 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:31:05,801 INFO L418 AbstractCegarLoop]: === Iteration 2 === [powerErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2019-08-05 10:31:05,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:31:05,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1226462, now seen corresponding path program 1 times [2019-08-05 10:31:05,803 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:31:05,811 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-08-05 10:31:05,811 INFO L285 seRefinementStrategy]: Strategy FixedRefinementStrategy was unsuccessful and could not determine trace feasibility. [2019-08-05 10:31:05,812 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-08-05 10:31:05,828 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures res >= 0; is not ensure(true) [2019-08-05 10:31:05,834 WARN L226 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-08-05 10:31:05,835 INFO L202 PluginConnector]: Adding new model Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:31:05 BoogieIcfgContainer [2019-08-05 10:31:05,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:31:05,838 INFO L168 Benchmark]: Toolchain (without parser) took 827.56 ms. Allocated memory is still 140.0 MB. Free memory was 109.6 MB in the beginning and 77.3 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. [2019-08-05 10:31:05,839 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 110.9 MB in the beginning and 110.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 10:31:05,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.27 ms. Allocated memory is still 140.0 MB. Free memory was 109.6 MB in the beginning and 107.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-08-05 10:31:05,842 INFO L168 Benchmark]: Boogie Preprocessor took 20.57 ms. Allocated memory is still 140.0 MB. Free memory was 107.7 MB in the beginning and 106.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:31:05,844 INFO L168 Benchmark]: RCFGBuilder took 338.31 ms. Allocated memory is still 140.0 MB. Free memory was 106.6 MB in the beginning and 97.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-08-05 10:31:05,845 INFO L168 Benchmark]: TraceAbstraction took 431.04 ms. Allocated memory is still 140.0 MB. Free memory was 96.9 MB in the beginning and 77.3 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2019-08-05 10:31:05,852 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 140.0 MB. Free memory was 110.9 MB in the beginning and 110.7 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 33.27 ms. Allocated memory is still 140.0 MB. Free memory was 109.6 MB in the beginning and 107.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.57 ms. Allocated memory is still 140.0 MB. Free memory was 107.7 MB in the beginning and 106.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 338.31 ms. Allocated memory is still 140.0 MB. Free memory was 106.6 MB in the beginning and 97.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 431.04 ms. Allocated memory is still 140.0 MB. Free memory was 96.9 MB in the beginning and 77.3 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures res >= 0; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that procedure postcondition always holds Unable to prove that procedure postcondition always holds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L9-L10] requires a >= 1 && b >= 0; [L15] res := 1; [L16] tmp := b; [L18] COND TRUE tmp > 0 [L20] res := res * a; [L21] tmp := tmp - 1; [L18] COND FALSE !(tmp > 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 1 error locations. UNKNOWN Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3 SDtfs, 1 SDslu, 1 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5occurred 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, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 10 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...