java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/real-life/Elevator-Integer.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:15:25,079 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:15:25,081 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:15:25,105 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:15:25,105 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:15:25,109 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:15:25,114 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:15:25,116 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:15:25,118 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:15:25,119 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:15:25,120 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:15:25,120 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:15:25,123 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:15:25,124 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:15:25,129 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:15:25,130 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:15:25,130 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:15:25,134 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:15:25,139 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:15:25,143 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:15:25,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:15:25,146 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:15:25,149 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:15:25,149 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:15:25,150 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:15:25,151 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:15:25,152 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:15:25,153 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:15:25,156 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:15:25,159 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:15:25,159 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:15:25,160 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 13:15:25,168 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:15:25,186 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:15:25,187 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:15:25,188 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:15:25,188 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:15:25,189 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:15:25,189 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:15:25,189 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:15:25,189 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:15:25,247 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:15:25,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:15:25,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:15:25,269 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:15:25,269 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:15:25,270 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/Elevator-Integer.bpl [2018-07-25 13:15:25,270 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/Elevator-Integer.bpl' [2018-07-25 13:15:25,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:15:25,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:15:25,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:15:25,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:15:25,357 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:15:25,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,397 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 13:15:25,397 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 13:15:25,397 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 13:15:25,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:15:25,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:15:25,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:15:25,401 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:15:25,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:15:25,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:15:25,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:15:25,455 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:15:25,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,552 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Elevator given in one single declaration [2018-07-25 13:15:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure Elevator [2018-07-25 13:15:25,553 INFO L138 BoogieDeclarations]: Found implementation of procedure Elevator [2018-07-25 13:15:26,413 INFO L270 CfgBuilder]: Using library mode [2018-07-25 13:15:26,414 INFO L202 PluginConnector]: Adding new model Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:15:26 BoogieIcfgContainer [2018-07-25 13:15:26,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:15:26,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:15:26,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:15:26,419 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:15:26,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/2) ... [2018-07-25 13:15:26,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2349d941 and model type Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:15:26, skipping insertion in model container [2018-07-25 13:15:26,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:15:26" (2/2) ... [2018-07-25 13:15:26,424 INFO L112 eAbstractionObserver]: Analyzing ICFG Elevator-Integer.bpl [2018-07-25 13:15:26,434 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:15:26,445 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:15:26,493 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:15:26,493 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:15:26,494 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:15:26,494 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:15:26,494 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:15:26,494 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:15:26,494 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:15:26,494 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:15:26,495 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:15:26,509 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-25 13:15:26,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-25 13:15:26,518 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:26,520 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-25 13:15:26,521 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:26,527 INFO L82 PathProgramCache]: Analyzing trace with hash 35564, now seen corresponding path program 1 times [2018-07-25 13:15:26,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:15:26,692 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:15:26,692 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 13:15:26,697 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:15:26,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:15:26,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:15:26,718 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 4 states. [2018-07-25 13:15:26,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:15:26,790 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 13:15:26,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:15:26,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2018-07-25 13:15:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:15:26,807 INFO L225 Difference]: With dead ends: 9 [2018-07-25 13:15:26,808 INFO L226 Difference]: Without dead ends: 6 [2018-07-25 13:15:26,811 INFO L574 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 [2018-07-25 13:15:26,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-25 13:15:26,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-25 13:15:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-25 13:15:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-25 13:15:26,856 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2018-07-25 13:15:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:15:26,857 INFO L472 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-25 13:15:26,857 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:15:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-25 13:15:26,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 13:15:26,858 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:26,858 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-25 13:15:26,858 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:26,859 INFO L82 PathProgramCache]: Analyzing trace with hash 34183738, now seen corresponding path program 1 times [2018-07-25 13:15:26,859 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:15:26,948 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:15:26,948 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 13:15:26,950 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:15:26,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:15:26,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:15:26,952 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2018-07-25 13:15:27,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:15:27,003 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 13:15:27,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 13:15:27,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-07-25 13:15:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:15:27,004 INFO L225 Difference]: With dead ends: 9 [2018-07-25 13:15:27,004 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 13:15:27,005 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:15:27,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 13:15:27,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-25 13:15:27,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 13:15:27,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-25 13:15:27,009 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2018-07-25 13:15:27,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:15:27,009 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-25 13:15:27,010 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:15:27,010 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-25 13:15:27,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 13:15:27,010 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:27,010 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1] [2018-07-25 13:15:27,011 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:27,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1509159416, now seen corresponding path program 2 times [2018-07-25 13:15:27,011 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:15:27,360 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:15:27,360 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:15:27,360 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:15:27,361 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:15:27,361 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:15:27,362 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-07-25 13:15:27,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:15:27,491 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 13:15:27,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:15:27,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-07-25 13:15:27,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:15:27,493 INFO L225 Difference]: With dead ends: 11 [2018-07-25 13:15:27,494 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 13:15:27,495 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:15:27,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 13:15:27,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-25 13:15:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 13:15:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-25 13:15:27,507 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-07-25 13:15:27,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:15:27,507 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-25 13:15:27,507 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:15:27,508 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-25 13:15:27,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 13:15:27,510 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:27,510 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1] [2018-07-25 13:15:27,510 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:27,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1396754006, now seen corresponding path program 3 times [2018-07-25 13:15:27,511 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:27,978 WARN L169 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2018-07-25 13:15:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:15:28,098 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:15:28,098 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:15:28,099 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:15:28,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:15:28,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:15:28,100 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-07-25 13:15:28,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:15:28,319 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 13:15:28,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 13:15:28,320 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2018-07-25 13:15:28,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:15:28,321 INFO L225 Difference]: With dead ends: 13 [2018-07-25 13:15:28,321 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 13:15:28,323 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:15:28,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 13:15:28,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-25 13:15:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 13:15:28,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-25 13:15:28,331 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-07-25 13:15:28,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:15:28,332 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-25 13:15:28,332 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:15:28,334 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-25 13:15:28,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 13:15:28,335 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:28,336 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2018-07-25 13:15:28,336 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:28,336 INFO L82 PathProgramCache]: Analyzing trace with hash -2044157148, now seen corresponding path program 4 times [2018-07-25 13:15:28,337 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:28,855 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:28,856 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:28,918 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2018-07-25 13:15:29,004 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:29,091 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2018-07-25 13:15:29,283 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:29,352 WARN L169 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 50 [2018-07-25 13:15:29,654 WARN L169 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 48 [2018-07-25 13:15:29,764 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:15:29,764 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:15:29,764 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:15:29,765 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:15:29,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:15:29,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:15:29,767 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-07-25 13:15:30,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:15:30,162 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 13:15:30,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 13:15:30,163 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2018-07-25 13:15:30,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:15:30,164 INFO L225 Difference]: With dead ends: 15 [2018-07-25 13:15:30,164 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 13:15:30,167 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:15:30,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 13:15:30,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-25 13:15:30,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-25 13:15:30,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-25 13:15:30,179 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-07-25 13:15:30,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:15:30,179 INFO L472 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-25 13:15:30,179 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:15:30,180 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-25 13:15:30,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 13:15:30,180 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:30,181 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1] [2018-07-25 13:15:30,181 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:30,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1634958222, now seen corresponding path program 5 times [2018-07-25 13:15:30,182 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:31,003 WARN L169 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 36 [2018-07-25 13:15:31,182 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 36 [2018-07-25 13:15:31,600 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:31,659 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:32,001 WARN L169 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 69 [2018-07-25 13:15:32,212 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:32,253 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:32,254 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:32,389 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:32,787 WARN L169 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 65 [2018-07-25 13:15:33,833 WARN L169 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 94 [2018-07-25 13:15:34,652 WARN L169 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 96 [2018-07-25 13:15:35,430 WARN L169 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 92 [2018-07-25 13:15:35,617 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:15:35,618 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:15:35,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:15:35,619 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 13:15:35,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 13:15:35,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:15:35,621 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-07-25 13:15:36,120 WARN L169 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2018-07-25 13:15:36,336 WARN L169 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2018-07-25 13:15:36,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:15:36,405 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 13:15:36,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 13:15:36,406 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-07-25 13:15:36,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:15:36,407 INFO L225 Difference]: With dead ends: 17 [2018-07-25 13:15:36,407 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 13:15:36,408 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=116, Invalid=190, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:15:36,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 13:15:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-25 13:15:36,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 13:15:36,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-25 13:15:36,422 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-07-25 13:15:36,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:15:36,422 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-25 13:15:36,423 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 13:15:36,423 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-25 13:15:36,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 13:15:36,424 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:36,424 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1] [2018-07-25 13:15:36,424 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:36,425 INFO L82 PathProgramCache]: Analyzing trace with hash 763185728, now seen corresponding path program 6 times [2018-07-25 13:15:36,425 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:37,869 WARN L169 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 36 [2018-07-25 13:15:38,455 WARN L169 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 44 [2018-07-25 13:15:38,796 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:38,811 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:39,030 WARN L169 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 65 [2018-07-25 13:15:39,115 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:39,116 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:39,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:39,401 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:39,686 WARN L169 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 82 [2018-07-25 13:15:40,495 WARN L169 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 87 [2018-07-25 13:15:41,463 WARN L169 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 95 [2018-07-25 13:15:42,045 WARN L169 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 69 [2018-07-25 13:15:42,373 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:15:42,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:15:42,374 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:15:42,374 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 13:15:42,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 13:15:42,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:15:42,375 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 13 states. [2018-07-25 13:15:42,835 WARN L169 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2018-07-25 13:15:43,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:15:43,095 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 13:15:43,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:15:43,095 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2018-07-25 13:15:43,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:15:43,097 INFO L225 Difference]: With dead ends: 19 [2018-07-25 13:15:43,097 INFO L226 Difference]: Without dead ends: 18 [2018-07-25 13:15:43,098 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=124, Invalid=218, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:15:43,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-25 13:15:43,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-25 13:15:43,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 13:15:43,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-25 13:15:43,116 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-07-25 13:15:43,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:15:43,117 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-25 13:15:43,117 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 13:15:43,117 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-25 13:15:43,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 13:15:43,118 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:43,118 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1] [2018-07-25 13:15:43,122 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:43,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1017916274, now seen corresponding path program 7 times [2018-07-25 13:15:43,123 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:44,218 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 37 [2018-07-25 13:15:44,353 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 39 [2018-07-25 13:15:44,924 WARN L169 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 58 [2018-07-25 13:15:45,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:45,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:45,020 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:45,020 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:45,201 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:45,211 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:45,482 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:45,708 WARN L169 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 57 [2018-07-25 13:15:46,354 WARN L169 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 424 DAG size of output: 67 [2018-07-25 13:15:47,037 WARN L169 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 426 DAG size of output: 63 [2018-07-25 13:15:48,476 WARN L169 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 450 DAG size of output: 97 [2018-07-25 13:15:49,756 WARN L169 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 463 DAG size of output: 99 [2018-07-25 13:15:50,302 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:50,938 WARN L169 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 483 DAG size of output: 108 [2018-07-25 13:15:52,086 WARN L169 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 481 DAG size of output: 101 [2018-07-25 13:15:52,593 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:52,594 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:52,729 WARN L169 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 77 [2018-07-25 13:15:53,329 WARN L169 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 76 [2018-07-25 13:15:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:15:53,527 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:15:53,528 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 13:15:53,528 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 13:15:53,532 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 13:15:53,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:15:53,533 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 18 states. [2018-07-25 13:15:53,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:15:53,943 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-07-25 13:15:53,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:15:53,943 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17 [2018-07-25 13:15:53,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:15:53,944 INFO L225 Difference]: With dead ends: 18 [2018-07-25 13:15:53,944 INFO L226 Difference]: Without dead ends: 0 [2018-07-25 13:15:53,945 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:15:53,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-25 13:15:53,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-25 13:15:53,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-25 13:15:53,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-25 13:15:53,946 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-07-25 13:15:53,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:15:53,946 INFO L472 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-25 13:15:53,946 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 13:15:53,946 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-25 13:15:53,946 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-25 13:15:53,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-25 13:15:54,116 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 307 [2018-07-25 13:15:54,280 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 308 [2018-07-25 13:15:54,507 WARN L169 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 67 [2018-07-25 13:15:54,720 WARN L169 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 67 [2018-07-25 13:15:54,723 INFO L422 ceAbstractionStarter]: For program point L168(lines 168 183) no Hoare annotation was computed. [2018-07-25 13:15:54,723 INFO L422 ceAbstractionStarter]: For program point L135(lines 135 142) no Hoare annotation was computed. [2018-07-25 13:15:54,724 INFO L422 ceAbstractionStarter]: For program point L135-2(lines 111 160) no Hoare annotation was computed. [2018-07-25 13:15:54,724 INFO L422 ceAbstractionStarter]: For program point L94(lines 94 108) no Hoare annotation was computed. [2018-07-25 13:15:54,724 INFO L422 ceAbstractionStarter]: For program point L152(lines 152 160) no Hoare annotation was computed. [2018-07-25 13:15:54,724 INFO L422 ceAbstractionStarter]: For program point L103(lines 103 108) no Hoare annotation was computed. [2018-07-25 13:15:54,724 INFO L422 ceAbstractionStarter]: For program point L103-2(lines 89 142) no Hoare annotation was computed. [2018-07-25 13:15:54,724 INFO L422 ceAbstractionStarter]: For program point L178(lines 178 183) no Hoare annotation was computed. [2018-07-25 13:15:54,726 INFO L418 ceAbstractionStarter]: At program point L178-2(lines 163 183) the Hoare annotation is: (let ((.cse3 (<= 0 Elevator_c3)) (.cse0 (= |Elevator_goal'| |Elevator_current'|)) (.cse4 (= Elevator_qDC1 2)) (.cse5 (= Elevator_qDC2 3)) (.cse1 (= Elevator_qCSP 1))) (and (or (and (or .cse0 (= Elevator_qDC2 2)) (or (and (<= Elevator_qDC2 1) (< 0 Elevator_qDC2)) (not .cse1)) (<= Elevator_min |Elevator_goal'|) (let ((.cse2 (<= |Elevator_current'| Elevator_max))) (or (and .cse2 (<= 2 Elevator_qCSP) (<= Elevator_qCSP 2)) (and (or (= 1 |Elevator_dir'|) (<= |Elevator_goal'| |Elevator_current'|)) (or (<= |Elevator_current'| |Elevator_goal'|) (and .cse2 (= 0 (+ |Elevator_dir'| 1))))))) (or (and (not (= Elevator_qCSP 3)) (not (= Elevator_qCSP 2))) (<= (+ |Elevator_current'| 1) |Elevator_goal'|) (<= (+ |Elevator_goal'| 1) |Elevator_current'|))) (and .cse3 .cse4 .cse0 .cse5 (<= 3 Elevator_qCSP))) (<= Elevator_min |Elevator_current'|) (<= |Elevator_goal'| Elevator_max) (let ((.cse6 (<= Elevator_c2 Elevator_c3))) (or (and .cse3 .cse6 (<= 3 Elevator_qDC2) (or (<= 3 Elevator_c2) (<= 2 Elevator_qDC1))) (not .cse0) (and .cse6 .cse4 .cse5) .cse1)))) [2018-07-25 13:15:54,726 INFO L422 ceAbstractionStarter]: For program point L129(lines 129 142) no Hoare annotation was computed. [2018-07-25 13:15:54,726 INFO L422 ceAbstractionStarter]: For program point L96(lines 96 108) no Hoare annotation was computed. [2018-07-25 13:15:54,726 INFO L422 ceAbstractionStarter]: For program point L80(lines 80 82) no Hoare annotation was computed. [2018-07-25 13:15:54,726 INFO L422 ceAbstractionStarter]: For program point L80-2(lines 80 85) no Hoare annotation was computed. [2018-07-25 13:15:54,726 INFO L422 ceAbstractionStarter]: For program point L171(lines 171 183) no Hoare annotation was computed. [2018-07-25 13:15:54,727 INFO L422 ceAbstractionStarter]: For program point L155(lines 155 160) no Hoare annotation was computed. [2018-07-25 13:15:54,727 INFO L422 ceAbstractionStarter]: For program point L155-2(lines 145 183) no Hoare annotation was computed. [2018-07-25 13:15:54,727 INFO L418 ceAbstractionStarter]: At program point ElevatorErr0ASSERT_VIOLATIONASSERT(line 185) the Hoare annotation is: false [2018-07-25 13:15:54,728 INFO L418 ceAbstractionStarter]: At program point L48-1(lines 13 188) the Hoare annotation is: (let ((.cse3 (<= 0 Elevator_c3)) (.cse0 (= |Elevator_goal'| |Elevator_current'|)) (.cse4 (= Elevator_qDC1 2)) (.cse5 (= Elevator_qDC2 3)) (.cse1 (= Elevator_qCSP 1))) (and (or (and (or .cse0 (= Elevator_qDC2 2)) (or (and (<= Elevator_qDC2 1) (< 0 Elevator_qDC2)) (not .cse1)) (<= Elevator_min |Elevator_goal'|) (let ((.cse2 (<= |Elevator_current'| Elevator_max))) (or (and .cse2 (<= 2 Elevator_qCSP) (<= Elevator_qCSP 2)) (and (or (= 1 |Elevator_dir'|) (<= |Elevator_goal'| |Elevator_current'|)) (or (<= |Elevator_current'| |Elevator_goal'|) (and .cse2 (= 0 (+ |Elevator_dir'| 1))))))) (or (and (not (= Elevator_qCSP 3)) (not (= Elevator_qCSP 2))) (<= (+ |Elevator_current'| 1) |Elevator_goal'|) (<= (+ |Elevator_goal'| 1) |Elevator_current'|))) (and .cse3 .cse4 .cse0 .cse5 (<= 3 Elevator_qCSP))) (<= Elevator_min |Elevator_current'|) (<= |Elevator_goal'| Elevator_max) (let ((.cse6 (<= Elevator_c2 Elevator_c3))) (or (and .cse3 .cse6 (<= 3 Elevator_qDC2) (or (<= 3 Elevator_c2) (<= 2 Elevator_qDC1))) (not .cse0) (and .cse6 .cse4 .cse5) .cse1)))) [2018-07-25 13:15:54,728 INFO L422 ceAbstractionStarter]: For program point L123(lines 123 142) no Hoare annotation was computed. [2018-07-25 13:15:54,728 INFO L422 ceAbstractionStarter]: For program point L165(lines 165 183) no Hoare annotation was computed. [2018-07-25 13:15:54,728 INFO L422 ceAbstractionStarter]: For program point L99(lines 99 108) no Hoare annotation was computed. [2018-07-25 13:15:54,728 INFO L418 ceAbstractionStarter]: At program point ElevatorEXIT(lines 13 188) the Hoare annotation is: (and (<= |Elevator_current'| Elevator_max) (<= Elevator_min |Elevator_current'|)) [2018-07-25 13:15:54,729 INFO L422 ceAbstractionStarter]: For program point L91(lines 91 108) no Hoare annotation was computed. [2018-07-25 13:15:54,729 INFO L422 ceAbstractionStarter]: For program point L149(lines 149 160) no Hoare annotation was computed. [2018-07-25 13:15:54,729 INFO L422 ceAbstractionStarter]: For program point L116(lines 116 142) no Hoare annotation was computed. [2018-07-25 13:15:54,729 INFO L422 ceAbstractionStarter]: For program point L83-1(lines 83 108) no Hoare annotation was computed. [2018-07-25 13:15:54,729 INFO L425 ceAbstractionStarter]: At program point ElevatorENTRY(lines 13 188) the Hoare annotation is: true [2018-07-25 13:15:54,729 INFO L422 ceAbstractionStarter]: For program point L175(lines 175 183) no Hoare annotation was computed. [2018-07-25 13:15:54,730 INFO L422 ceAbstractionStarter]: For program point L101(lines 101 108) no Hoare annotation was computed. [2018-07-25 13:15:54,747 INFO L202 PluginConnector]: Adding new model Elevator-Integer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:15:54 BoogieIcfgContainer [2018-07-25 13:15:54,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:15:54,748 INFO L168 Benchmark]: Toolchain (without parser) took 29393.38 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 852.5 MB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -40.3 MB). Peak memory consumption was 812.2 MB. Max. memory is 7.1 GB. [2018-07-25 13:15:54,750 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:15:54,750 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.13 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:15:54,751 INFO L168 Benchmark]: Boogie Preprocessor took 54.37 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:15:54,753 INFO L168 Benchmark]: RCFGBuilder took 959.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-25 13:15:54,754 INFO L168 Benchmark]: TraceAbstraction took 28331.69 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 852.5 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -72.0 MB). Peak memory consumption was 780.5 MB. Max. memory is 7.1 GB. [2018-07-25 13:15:54,760 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 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.13 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.37 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 959.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28331.69 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 852.5 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -72.0 MB). Peak memory consumption was 780.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 185]: 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 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: ((((((((goal' == current' || qDC2 == 2) && ((qDC2 <= 1 && 0 < qDC2) || !(qCSP == 1))) && min <= goal') && (((current' <= max && 2 <= qCSP) && qCSP <= 2) || ((1 == dir' || goal' <= current') && (current' <= goal' || (current' <= max && 0 == dir' + 1))))) && (((!(qCSP == 3) && !(qCSP == 2)) || current' + 1 <= goal') || goal' + 1 <= current')) || ((((0 <= c3 && qDC1 == 2) && goal' == current') && qDC2 == 3) && 3 <= qCSP)) && min <= current') && goal' <= max) && ((((((0 <= c3 && c2 <= c3) && 3 <= qDC2) && (3 <= c2 || 2 <= qDC1)) || !(goal' == current')) || ((c2 <= c3 && qDC1 == 2) && qDC2 == 3)) || qCSP == 1) - ProcedureContractResult [Line: 13]: Procedure Contract for Elevator Derived contract for procedure Elevator: current' <= max && min <= current' - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. SAFE Result, 28.2s OverallTime, 8 OverallIterations, 8 TraceHistogramMax, 2.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 16 SDtfs, 78 SDslu, 4 SDs, 0 SdLazy, 113 SolverSat, 93 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 22.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=7, 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 20 NumberOfFragments, 277 HoareAnnotationTreeSize, 5 FomulaSimplifications, 1141 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 5 FomulaSimplificationsInter, 5291 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 23.2s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 102372 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 1 PerfectInterpolantSequences, 0/168 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/Elevator-Integer.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-15-54-788.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Elevator-Integer.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-15-54-788.csv Received shutdown request...