java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/real-life/DraegerElevator-FSEN2007.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-935f392 [2018-07-23 13:36:26,645 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 13:36:26,648 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 13:36:26,667 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 13:36:26,668 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 13:36:26,669 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 13:36:26,670 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 13:36:26,673 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 13:36:26,677 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 13:36:26,678 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 13:36:26,681 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-23 13:36:26,724 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 13:36:26,753 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 13:36:26,754 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 13:36:26,756 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 13:36:26,757 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 13:36:26,757 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 13:36:26,757 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 13:36:26,757 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 13:36:26,757 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 13:36:26,830 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 13:36:26,847 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 13:36:26,853 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 13:36:26,854 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 13:36:26,855 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 13:36:26,856 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/DraegerElevator-FSEN2007.bpl [2018-07-23 13:36:26,856 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/DraegerElevator-FSEN2007.bpl' [2018-07-23 13:36:26,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 13:36:26,924 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 13:36:26,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 13:36:26,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 13:36:26,925 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 13:36:26,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/1) ... [2018-07-23 13:36:26,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/1) ... [2018-07-23 13:36:26,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/1) ... [2018-07-23 13:36:26,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/1) ... [2018-07-23 13:36:26,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/1) ... [2018-07-23 13:36:26,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/1) ... [2018-07-23 13:36:26,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/1) ... [2018-07-23 13:36:26,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 13:36:26,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 13:36:26,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 13:36:26,986 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 13:36:26,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/1) ... [2018-07-23 13:36:27,070 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-07-23 13:36:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 13:36:27,071 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 13:36:27,534 INFO L258 CfgBuilder]: Using library mode [2018-07-23 13:36:27,535 INFO L202 PluginConnector]: Adding new model DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:36:27 BoogieIcfgContainer [2018-07-23 13:36:27,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 13:36:27,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 13:36:27,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 13:36:27,542 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 13:36:27,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/2) ... [2018-07-23 13:36:27,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9c81f9 and model type DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:36:27, skipping insertion in model container [2018-07-23 13:36:27,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:36:27" (2/2) ... [2018-07-23 13:36:27,546 INFO L112 eAbstractionObserver]: Analyzing ICFG DraegerElevator-FSEN2007.bpl [2018-07-23 13:36:27,556 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 13:36:27,565 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 13:36:27,610 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 13:36:27,611 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 13:36:27,612 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 13:36:27,612 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 13:36:27,612 INFO L376 AbstractCegarLoop]: Backedges is CANONICAL [2018-07-23 13:36:27,612 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 13:36:27,612 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 13:36:27,613 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 13:36:27,613 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 13:36:27,625 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-23 13:36:27,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-07-23 13:36:27,634 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:36:27,636 INFO L357 BasicCegarLoop]: trace histogram [1, 1] [2018-07-23 13:36:27,636 INFO L414 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolationINVARIANTandASSERT]=== [2018-07-23 13:36:27,642 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-07-23 13:36:27,648 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:36:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:36:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:36:27,703 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:36:27,703 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-07-23 13:36:27,705 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:36:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:36:27,706 INFO L185 omatonBuilderFactory]: Interpolants [8#true, 9#false, 10#(< main_current (+ main_max 1))] [2018-07-23 13:36:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:36:27,708 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 13:36:27,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 13:36:27,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:36:27,724 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-07-23 13:36:27,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:36:27,772 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2018-07-23 13:36:27,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 13:36:27,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-07-23 13:36:27,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:36:27,785 INFO L225 Difference]: With dead ends: 7 [2018-07-23 13:36:27,786 INFO L226 Difference]: Without dead ends: 5 [2018-07-23 13:36:27,789 INFO L575 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 [2018-07-23 13:36:27,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-07-23 13:36:27,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-07-23 13:36:27,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-07-23 13:36:27,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-07-23 13:36:27,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 2 [2018-07-23 13:36:27,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:36:27,828 INFO L471 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-07-23 13:36:27,829 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 13:36:27,829 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-07-23 13:36:27,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 13:36:27,829 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:36:27,830 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 13:36:27,830 INFO L414 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolationINVARIANTandASSERT]=== [2018-07-23 13:36:27,830 INFO L82 PathProgramCache]: Analyzing trace with hash 929258, now seen corresponding path program 1 times [2018-07-23 13:36:27,830 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:36:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:36:27,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:36:27,933 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:36:27,934 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2018-07-23 13:36:27,934 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:36:27,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:36:27,934 INFO L185 omatonBuilderFactory]: Interpolants [35#true, 36#false, 37#(and (<= main_input main_max) (<= main_current main_max) (= main_pc 0)), 38#(<= main_current main_max)] [2018-07-23 13:36:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:36:27,939 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:36:27,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:36:27,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:36:27,945 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-07-23 13:36:27,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:36:27,991 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-07-23 13:36:27,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 13:36:27,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-23 13:36:27,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:36:27,995 INFO L225 Difference]: With dead ends: 8 [2018-07-23 13:36:27,995 INFO L226 Difference]: Without dead ends: 7 [2018-07-23 13:36:27,996 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:36:27,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-23 13:36:27,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-23 13:36:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 13:36:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-23 13:36:28,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-23 13:36:28,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:36:28,000 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-23 13:36:28,001 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:36:28,001 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-23 13:36:28,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 13:36:28,001 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:36:28,002 INFO L357 BasicCegarLoop]: trace histogram [2, 2, 1, 1] [2018-07-23 13:36:28,002 INFO L414 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolationINVARIANTandASSERT]=== [2018-07-23 13:36:28,002 INFO L82 PathProgramCache]: Analyzing trace with hash 893020753, now seen corresponding path program 2 times [2018-07-23 13:36:28,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:36:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:36:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:36:28,194 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:36:28,194 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 13:36:28,195 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:36:28,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:36:28,195 INFO L185 omatonBuilderFactory]: Interpolants [69#true, 70#false, 71#(and (<= main_input main_max) (<= main_current main_max) (= main_pc 0)), 72#(or (and (not (= main_pc 0)) (<= main_current main_max) (<= main_req main_max)) (and (<= (+ main_current 1) main_max) (<= 3 main_pc) (<= main_pc 3)) (and (<= main_input main_max) (<= main_current main_max) (= main_pc 0))), 73#(<= main_current main_max)] [2018-07-23 13:36:28,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:36:28,196 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 13:36:28,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 13:36:28,197 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 13:36:28,197 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-07-23 13:36:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:36:28,239 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2018-07-23 13:36:28,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 13:36:28,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-07-23 13:36:28,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:36:28,241 INFO L225 Difference]: With dead ends: 7 [2018-07-23 13:36:28,241 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 13:36:28,242 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 13:36:28,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 13:36:28,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 13:36:28,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 13:36:28,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 13:36:28,243 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-07-23 13:36:28,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:36:28,243 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 13:36:28,244 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 13:36:28,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 13:36:28,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 13:36:28,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 13:36:28,319 INFO L421 ceAbstractionStarter]: For program point L13''(lines 13 32) no Hoare annotation was computed. [2018-07-23 13:36:28,319 INFO L421 ceAbstractionStarter]: For program point L20(lines 20 31) no Hoare annotation was computed. [2018-07-23 13:36:28,319 INFO L421 ceAbstractionStarter]: For program point L23(lines 23 31) no Hoare annotation was computed. [2018-07-23 13:36:28,320 INFO L421 ceAbstractionStarter]: For program point L26(lines 26 31) no Hoare annotation was computed. [2018-07-23 13:36:28,320 INFO L421 ceAbstractionStarter]: For program point L36(lines 36 44) no Hoare annotation was computed. [2018-07-23 13:36:28,320 INFO L421 ceAbstractionStarter]: For program point L35(lines 35 58) no Hoare annotation was computed. [2018-07-23 13:36:28,320 INFO L417 ceAbstractionStarter]: At program point mainEXIT(lines 1 60) the Hoare annotation is: (< main_current (+ main_max 1)) [2018-07-23 13:36:28,321 INFO L424 ceAbstractionStarter]: At program point mainENTRY(lines 1 60) the Hoare annotation is: true [2018-07-23 13:36:28,321 INFO L421 ceAbstractionStarter]: For program point L39(lines 39 44) no Hoare annotation was computed. [2018-07-23 13:36:28,321 INFO L417 ceAbstractionStarter]: At program point mainErr0AssertViolationINVARIANTandASSERT(line 10) the Hoare annotation is: false [2018-07-23 13:36:28,321 INFO L421 ceAbstractionStarter]: For program point L49(lines 49 57) no Hoare annotation was computed. [2018-07-23 13:36:28,324 INFO L417 ceAbstractionStarter]: At program point L48(lines 9 59) the Hoare annotation is: (let ((.cse1 (<= main_current main_max)) (.cse0 (= main_pc 0))) (or (and (not .cse0) .cse1 (<= main_req main_max)) (and (<= (+ main_current 1) main_max) (<= 3 main_pc) (<= main_pc 3)) (and (<= main_input main_max) .cse1 .cse0))) [2018-07-23 13:36:28,324 INFO L421 ceAbstractionStarter]: For program point L52(lines 52 57) no Hoare annotation was computed. [2018-07-23 13:36:28,325 INFO L417 ceAbstractionStarter]: At program point L9(lines 1 60) the Hoare annotation is: (let ((.cse1 (<= main_current main_max)) (.cse0 (= main_pc 0))) (or (and (or (and (not .cse0) (<= main_req main_max)) (and (<= (+ main_current 1) main_max) (<= 3 main_pc) (<= main_pc 3))) .cse1) (and (<= main_input main_max) .cse1 .cse0))) [2018-07-23 13:36:28,327 INFO L421 ceAbstractionStarter]: For program point L13(lines 13 16) no Hoare annotation was computed. [2018-07-23 13:36:28,327 INFO L421 ceAbstractionStarter]: For program point L19(lines 19 45) no Hoare annotation was computed. [2018-07-23 13:36:28,343 INFO L202 PluginConnector]: Adding new model DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:36:28 BoogieIcfgContainer [2018-07-23 13:36:28,343 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 13:36:28,348 INFO L168 Benchmark]: Toolchain (without parser) took 1422.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-07-23 13:36:28,352 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 13:36:28,353 INFO L168 Benchmark]: Boogie Preprocessor took 60.48 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 13:36:28,354 INFO L168 Benchmark]: RCFGBuilder took 550.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-23 13:36:28,355 INFO L168 Benchmark]: TraceAbstraction took 806.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-23 13:36:28,360 INFO L336 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 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.48 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 550.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 806.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: loop invariant is valid and assertion always holds For all program executions holds that loop invariant is valid and assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (((!(pc == 0) && current <= max) && req <= max) || ((current + 1 <= max && 3 <= pc) && pc <= 3)) || ((input <= max && current <= max) && pc == 0) - ProcedureContractResult [Line: 1]: Procedure Contract for main Derived contract for procedure main: current < max + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 6 SDslu, 0 SDs, 0 SdLazy, 15 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/5 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 77 HoareAnnotationTreeSize, 5 FomulaSimplifications, 65 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 529 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/5 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/DraegerElevator-FSEN2007.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_13-36-28-374.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/DraegerElevator-FSEN2007.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_13-36-28-374.csv Received shutdown request...