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/ConstantValue-Safe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:31:03,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:31:03,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:31:03,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:31:03,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:31:03,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:31:03,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:31:03,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:31:03,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:31:03,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:31:03,097 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:31:03,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:31:03,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:31:03,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:31:03,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:31:03,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:31:03,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:31:03,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:31:03,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:31:03,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:31:03,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:31:03,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:31:03,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:31:03,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:31:03,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:31:03,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:31:03,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:31:03,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:31:03,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:31:03,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:31:03,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:31:03,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:31:03,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:31:03,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:31:03,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:31:03,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:31:03,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:31:03,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:31:03,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:31:03,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:31:03,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:31:03,153 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:31:03,165 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:31:03,169 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:31:03,170 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:31:03,171 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:31:03,171 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/ConstantValue-Safe.bpl [2019-08-05 10:31:03,172 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/ConstantValue-Safe.bpl' [2019-08-05 10:31:03,202 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:31:03,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:31:03,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:31:03,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:31:03,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:31:03,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:03" (1/1) ... [2019-08-05 10:31:03,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:03" (1/1) ... [2019-08-05 10:31:03,238 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 10:31:03,239 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 10:31:03,239 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 10:31:03,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:31:03,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:31:03,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:31:03,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:31:03,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:03" (1/1) ... [2019-08-05 10:31:03,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:03" (1/1) ... [2019-08-05 10:31:03,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:03" (1/1) ... [2019-08-05 10:31:03,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:03" (1/1) ... [2019-08-05 10:31:03,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:03" (1/1) ... [2019-08-05 10:31:03,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:03" (1/1) ... [2019-08-05 10:31:03,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:03" (1/1) ... [2019-08-05 10:31:03,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:31:03,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:31:03,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:31:03,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:31:03,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:03" (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 10:31:03,350 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-08-05 10:31:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-05 10:31:03,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-05 10:31:03,559 INFO L275 CfgBuilder]: Using library mode [2019-08-05 10:31:03,560 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-05 10:31:03,561 INFO L202 PluginConnector]: Adding new model ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:31:03 BoogieIcfgContainer [2019-08-05 10:31:03,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:31:03,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:31:03,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:31:03,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:31:03,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:31:03" (1/2) ... [2019-08-05 10:31:03,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493b89b0 and model type ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:31:03, skipping insertion in model container [2019-08-05 10:31:03,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:31:03" (2/2) ... [2019-08-05 10:31:03,569 INFO L109 eAbstractionObserver]: Analyzing ICFG ConstantValue-Safe.bpl [2019-08-05 10:31:03,579 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:31:03,586 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:31:03,602 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:31:03,628 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:31:03,629 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:31:03,629 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:31:03,630 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:31:03,630 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:31:03,630 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:31:03,630 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:31:03,630 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:31:03,630 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:31:03,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2019-08-05 10:31:03,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 10:31:03,650 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:31:03,651 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 10:31:03,653 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:31:03,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:31:03,659 INFO L82 PathProgramCache]: Analyzing trace with hash 967, now seen corresponding path program 1 times [2019-08-05 10:31:03,708 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:31:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:31:03,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 10:31:03,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:31:03,767 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 10:31:03,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:31:03,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 10:31:03,773 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:31:03,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:31:03,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:31:03,788 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2019-08-05 10:31:03,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:31:03,845 INFO L93 Difference]: Finished difference Result 5 states and 6 transitions. [2019-08-05 10:31:03,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:31:03,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 10:31:03,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:31:03,858 INFO L225 Difference]: With dead ends: 5 [2019-08-05 10:31:03,858 INFO L226 Difference]: Without dead ends: 4 [2019-08-05 10:31:03,860 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 10:31:03,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states. [2019-08-05 10:31:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2019-08-05 10:31:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-08-05 10:31:03,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 4 transitions. [2019-08-05 10:31:03,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states and 4 transitions. Word has length 2 [2019-08-05 10:31:03,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:31:03,888 INFO L475 AbstractCegarLoop]: Abstraction has 4 states and 4 transitions. [2019-08-05 10:31:03,889 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:31:03,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 4 transitions. [2019-08-05 10:31:03,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 10:31:03,889 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:31:03,889 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 10:31:03,890 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:31:03,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:31:03,890 INFO L82 PathProgramCache]: Analyzing trace with hash 29921, now seen corresponding path program 1 times [2019-08-05 10:31:03,891 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:31:03,895 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-08-05 10:31:03,896 INFO L285 seRefinementStrategy]: Strategy FixedRefinementStrategy was unsuccessful and could not determine trace feasibility. [2019-08-05 10:31:03,896 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-08-05 10:31:03,911 WARN L226 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-08-05 10:31:03,912 INFO L202 PluginConnector]: Adding new model ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:31:03 BoogieIcfgContainer [2019-08-05 10:31:03,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:31:03,915 INFO L168 Benchmark]: Toolchain (without parser) took 710.19 ms. Allocated memory is still 142.1 MB. Free memory was 111.7 MB in the beginning and 80.3 MB in the end (delta: 31.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2019-08-05 10:31:03,916 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 142.1 MB. Free memory was 112.9 MB in the beginning and 112.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-08-05 10:31:03,918 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.02 ms. Allocated memory is still 142.1 MB. Free memory was 111.7 MB in the beginning and 109.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-08-05 10:31:03,919 INFO L168 Benchmark]: Boogie Preprocessor took 26.58 ms. Allocated memory is still 142.1 MB. Free memory was 109.9 MB in the beginning and 108.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-05 10:31:03,920 INFO L168 Benchmark]: RCFGBuilder took 292.25 ms. Allocated memory is still 142.1 MB. Free memory was 108.6 MB in the beginning and 99.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. [2019-08-05 10:31:03,921 INFO L168 Benchmark]: TraceAbstraction took 349.44 ms. Allocated memory is still 142.1 MB. Free memory was 99.5 MB in the beginning and 80.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2019-08-05 10:31:03,926 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 142.1 MB. Free memory was 112.9 MB in the beginning and 112.7 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 37.02 ms. Allocated memory is still 142.1 MB. Free memory was 111.7 MB in the beginning and 109.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.58 ms. Allocated memory is still 142.1 MB. Free memory was 109.9 MB in the beginning and 108.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 292.25 ms. Allocated memory is still 142.1 MB. Free memory was 108.6 MB in the beginning and 99.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 349.44 ms. Allocated memory is still 142.1 MB. Free memory was 99.5 MB in the beginning and 80.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 21]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L14] assume x >= 0; [L15] assume y >= 0; [L19] x := x * y; [L21] assert x >= 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 locations, 1 error locations. UNKNOWN Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 4 SolverSat, 1 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...