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.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:15:25,188 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:15:25,190 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:15:25,210 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:15:25,210 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:15:25,211 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:15:25,214 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:15:25,216 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:15:25,218 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:15:25,220 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:15:25,221 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:15:25,222 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:15:25,224 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:15:25,225 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:15:25,226 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:15:25,227 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:15:25,231 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:15:25,240 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:15:25,242 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:15:25,247 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:15:25,248 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:15:25,252 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:15:25,256 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:15:25,256 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:15:25,257 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:15:25,258 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:15:25,259 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:15:25,260 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:15:25,261 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:15:25,263 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:15:25,264 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:15:25,266 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 13:15:25,268 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:15:25,284 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:15:25,284 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:15:25,286 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:15:25,286 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:15:25,286 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:15:25,287 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:15:25,287 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:15:25,287 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:15:25,339 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:15:25,353 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:15:25,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:15:25,361 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:15:25,362 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:15:25,362 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/Elevator.bpl [2018-07-25 13:15:25,363 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/Elevator.bpl' [2018-07-25 13:15:25,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:15:25,423 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:15:25,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:15:25,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:15:25,424 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:15:25,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Elevator.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Elevator.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,463 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 13:15:25,464 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 13:15:25,464 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 13:15:25,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:15:25,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:15:25,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:15:25,467 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:15:25,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Elevator.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Elevator.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Elevator.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Elevator.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Elevator.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Elevator.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Elevator.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:15:25,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:15:25,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:15:25,498 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:15:25,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Elevator.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/1) ... [2018-07-25 13:15:25,598 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Elevator given in one single declaration [2018-07-25 13:15:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure Elevator [2018-07-25 13:15:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure Elevator [2018-07-25 13:15:26,408 INFO L270 CfgBuilder]: Using library mode [2018-07-25 13:15:26,409 INFO L202 PluginConnector]: Adding new model Elevator.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:15:26 BoogieIcfgContainer [2018-07-25 13:15:26,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:15:26,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:15:26,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:15:26,414 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:15:26,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Elevator.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:25" (1/2) ... [2018-07-25 13:15:26,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2305328a and model type Elevator.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:15:26, skipping insertion in model container [2018-07-25 13:15:26,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Elevator.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:15:26" (2/2) ... [2018-07-25 13:15:26,419 INFO L112 eAbstractionObserver]: Analyzing ICFG Elevator.bpl [2018-07-25 13:15:26,429 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:15:26,442 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:15:26,492 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 13:15:26,495 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 13:15:26,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-25 13:15:26,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-25 13:15:26,523 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:26,524 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-25 13:15:26,525 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:26,531 INFO L82 PathProgramCache]: Analyzing trace with hash 35150, now seen corresponding path program 1 times [2018-07-25 13:15:26,538 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:26,627 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 13:15:26,630 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:15:26,631 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-07-25 13:15:26,636 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 13:15:26,652 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 13:15:26,652 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 13:15:26,655 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-07-25 13:15:26,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:15:26,707 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 13:15:26,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 13:15:26,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-25 13:15:26,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:15:26,727 INFO L225 Difference]: With dead ends: 9 [2018-07-25 13:15:26,728 INFO L226 Difference]: Without dead ends: 6 [2018-07-25 13:15:26,733 INFO L574 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 [2018-07-25 13:15:26,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-25 13:15:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-25 13:15:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-25 13:15:26,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-25 13:15:26,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2018-07-25 13:15:26,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:15:26,769 INFO L472 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-25 13:15:26,769 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 13:15:26,770 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-25 13:15:26,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 13:15:26,770 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:26,770 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-25 13:15:26,771 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:26,771 INFO L82 PathProgramCache]: Analyzing trace with hash 33951723, now seen corresponding path program 1 times [2018-07-25 13:15:26,771 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:26,881 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 13:15:26,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:15:26,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2018-07-25 13:15:26,884 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:15:26,885 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:15:26,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:15:26,888 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2018-07-25 13:15:26,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:15:26,967 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 13:15:26,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:15:26,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-07-25 13:15:26,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:15:26,968 INFO L225 Difference]: With dead ends: 9 [2018-07-25 13:15:26,968 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 13:15:26,972 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 13:15:26,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 13:15:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-25 13:15:26,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 13:15:26,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-25 13:15:26,978 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2018-07-25 13:15:26,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:15:26,979 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-25 13:15:26,979 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:15:26,979 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-25 13:15:26,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 13:15:26,981 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:26,981 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1] [2018-07-25 13:15:26,981 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:26,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1731959992, now seen corresponding path program 2 times [2018-07-25 13:15:26,982 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:27,051 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 13:15:27,051 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:15:27,051 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 13:15:27,052 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 13:15:27,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 13:15:27,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:15:27,055 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2018-07-25 13:15:27,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:15:27,131 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 13:15:27,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 13:15:27,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2018-07-25 13:15:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:15:27,133 INFO L225 Difference]: With dead ends: 11 [2018-07-25 13:15:27,133 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 13:15:27,134 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:15:27,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 13:15:27,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-25 13:15:27,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 13:15:27,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-25 13:15:27,143 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-07-25 13:15:27,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:15:27,143 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-25 13:15:27,144 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 13:15:27,144 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-25 13:15:27,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 13:15:27,145 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:27,145 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1] [2018-07-25 13:15:27,146 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:27,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2033931109, now seen corresponding path program 3 times [2018-07-25 13:15:27,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:27,342 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 13:15:27,342 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:15:27,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 13:15:27,343 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:15:27,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:15:27,344 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:15:27,344 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-07-25 13:15:27,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:15:27,423 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 13:15:27,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:15:27,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-07-25 13:15:27,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:15:27,425 INFO L225 Difference]: With dead ends: 13 [2018-07-25 13:15:27,425 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 13:15:27,426 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:15:27,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 13:15:27,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-25 13:15:27,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 13:15:27,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-25 13:15:27,440 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-07-25 13:15:27,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:15:27,440 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-25 13:15:27,440 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:15:27,441 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-25 13:15:27,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 13:15:27,443 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:27,443 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2018-07-25 13:15:27,444 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:27,444 INFO L82 PathProgramCache]: Analyzing trace with hash 397848642, now seen corresponding path program 4 times [2018-07-25 13:15:27,444 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:27,840 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 13:15:27,841 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:15:27,841 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:15:27,842 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:15:27,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:15:27,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:15:27,845 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2018-07-25 13:15:27,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:15:27,969 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 13:15:27,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 13:15:27,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-07-25 13:15:27,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:15:27,970 INFO L225 Difference]: With dead ends: 15 [2018-07-25 13:15:27,970 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 13:15:27,973 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:15:27,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 13:15:27,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-25 13:15:27,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-25 13:15:27,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-25 13:15:27,983 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-07-25 13:15:27,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:15:27,983 INFO L472 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-25 13:15:27,984 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:15:27,984 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-25 13:15:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 13:15:27,985 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:27,985 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1] [2018-07-25 13:15:27,985 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:27,985 INFO L82 PathProgramCache]: Analyzing trace with hash 80628191, now seen corresponding path program 5 times [2018-07-25 13:15:27,986 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:28,859 WARN L169 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 55 [2018-07-25 13:15:29,210 WARN L169 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 61 [2018-07-25 13:15:29,445 WARN L169 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 50 [2018-07-25 13:15:29,693 WARN L169 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 54 [2018-07-25 13:15:29,846 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:29,867 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 28 [2018-07-25 13:15:29,969 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 13:15:29,970 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:15:29,970 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:15:29,970 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:15:29,971 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:15:29,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:15:29,975 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2018-07-25 13:15:30,428 WARN L169 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2018-07-25 13:15:30,557 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2018-07-25 13:15:30,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:15:30,861 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 13:15:30,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 13:15:30,862 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2018-07-25 13:15:30,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:15:30,862 INFO L225 Difference]: With dead ends: 17 [2018-07-25 13:15:30,863 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 13:15:30,863 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:15:30,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 13:15:30,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-25 13:15:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 13:15:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-25 13:15:30,873 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-07-25 13:15:30,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:15:30,873 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-25 13:15:30,873 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:15:30,874 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-25 13:15:30,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 13:15:30,874 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:30,874 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1] [2018-07-25 13:15:30,875 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:30,875 INFO L82 PathProgramCache]: Analyzing trace with hash 174452796, now seen corresponding path program 6 times [2018-07-25 13:15:30,875 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:31,635 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 32 [2018-07-25 13:15:31,766 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 35 [2018-07-25 13:15:31,998 WARN L169 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 51 [2018-07-25 13:15:32,216 WARN L169 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 47 [2018-07-25 13:15:32,872 WARN L169 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 97 [2018-07-25 13:15:33,736 WARN L169 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 98 [2018-07-25 13:15:34,381 WARN L169 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 98 [2018-07-25 13:15:34,994 WARN L169 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 93 [2018-07-25 13:15:35,242 WARN L169 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 31 [2018-07-25 13:15:35,320 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 13:15:35,321 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:15:35,321 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:15:35,321 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 13:15:35,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 13:15:35,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:15:35,322 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 13 states. [2018-07-25 13:15:35,620 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 47 [2018-07-25 13:15:35,783 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 44 [2018-07-25 13:15:36,174 WARN L169 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 94 [2018-07-25 13:15:36,553 WARN L169 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 97 [2018-07-25 13:15:36,758 WARN L169 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 89 [2018-07-25 13:15:37,054 WARN L169 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 91 [2018-07-25 13:15:37,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:15:37,125 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 13:15:37,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:15:37,126 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2018-07-25 13:15:37,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:15:37,127 INFO L225 Difference]: With dead ends: 19 [2018-07-25 13:15:37,127 INFO L226 Difference]: Without dead ends: 18 [2018-07-25 13:15:37,128 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:15:37,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-25 13:15:37,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-25 13:15:37,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 13:15:37,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-25 13:15:37,144 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-07-25 13:15:37,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:15:37,144 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-25 13:15:37,144 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 13:15:37,145 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-25 13:15:37,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 13:15:37,148 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:37,148 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1] [2018-07-25 13:15:37,148 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:37,149 INFO L82 PathProgramCache]: Analyzing trace with hash 145584985, now seen corresponding path program 7 times [2018-07-25 13:15:37,149 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:39,182 WARN L169 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 58 [2018-07-25 13:15:39,819 WARN L169 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 57 [2018-07-25 13:15:40,151 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:40,741 WARN L169 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 67 [2018-07-25 13:15:41,097 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:41,865 WARN L169 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 316 DAG size of output: 80 [2018-07-25 13:15:43,312 WARN L169 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 425 DAG size of output: 102 [2018-07-25 13:15:45,167 WARN L169 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 423 DAG size of output: 128 [2018-07-25 13:15:46,378 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:46,845 WARN L169 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 414 DAG size of output: 94 [2018-07-25 13:15:48,464 WARN L169 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 435 DAG size of output: 67 [2018-07-25 13:15:48,892 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:48,893 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:48,931 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:49,066 WARN L169 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 52 [2018-07-25 13:15:49,587 WARN L169 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 50 [2018-07-25 13:15:49,707 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 13:15:49,707 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:15:49,707 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 13:15:49,708 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 13:15:49,708 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 13:15:49,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:15:49,709 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-07-25 13:15:49,907 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 59 [2018-07-25 13:15:50,055 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 58 [2018-07-25 13:15:50,442 WARN L169 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 95 [2018-07-25 13:15:50,761 WARN L169 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 111 [2018-07-25 13:15:51,077 WARN L169 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 114 [2018-07-25 13:15:51,323 WARN L169 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 98 [2018-07-25 13:15:51,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:15:51,474 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 13:15:51,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 13:15:51,474 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-07-25 13:15:51,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:15:51,475 INFO L225 Difference]: With dead ends: 21 [2018-07-25 13:15:51,475 INFO L226 Difference]: Without dead ends: 20 [2018-07-25 13:15:51,476 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=288, Invalid=582, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:15:51,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-25 13:15:51,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-25 13:15:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-25 13:15:51,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-25 13:15:51,500 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-07-25 13:15:51,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:15:51,500 INFO L472 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-25 13:15:51,500 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 13:15:51,501 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-25 13:15:51,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-25 13:15:51,502 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:15:51,502 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1] [2018-07-25 13:15:51,502 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:15:51,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1826577610, now seen corresponding path program 8 times [2018-07-25 13:15:51,503 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:15:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:15:53,573 WARN L169 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 55 [2018-07-25 13:15:53,965 WARN L169 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 61 [2018-07-25 13:15:54,705 WARN L169 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 123 [2018-07-25 13:15:55,555 WARN L169 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 454 DAG size of output: 105 [2018-07-25 13:15:58,559 WARN L169 SmtUtils]: Spent 2.80 s on a formula simplification. DAG size of input: 670 DAG size of output: 162 [2018-07-25 13:15:59,230 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:59,241 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:15:59,244 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:01,701 WARN L169 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 677 DAG size of output: 175 [2018-07-25 13:16:03,484 WARN L169 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 606 DAG size of output: 118 [2018-07-25 13:16:05,512 WARN L169 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 660 DAG size of output: 125 [2018-07-25 13:16:06,409 WARN L169 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 469 DAG size of output: 87 [2018-07-25 13:16:07,204 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:07,403 WARN L169 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 471 DAG size of output: 79 [2018-07-25 13:16:07,705 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:07,706 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:07,799 WARN L169 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 316 DAG size of output: 45 [2018-07-25 13:16:07,854 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:07,855 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:07,855 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 13:16:07,855 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 13:16:07,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 13:16:07,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:16:07,856 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 18 states. [2018-07-25 13:16:08,335 WARN L169 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 137 [2018-07-25 13:16:09,015 WARN L169 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 100 [2018-07-25 13:16:09,382 WARN L169 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 138 [2018-07-25 13:16:09,779 WARN L169 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 141 [2018-07-25 13:16:10,149 WARN L169 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 157 [2018-07-25 13:16:10,460 WARN L169 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 120 [2018-07-25 13:16:10,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:10,701 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 13:16:10,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 13:16:10,701 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 19 [2018-07-25 13:16:10,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:10,702 INFO L225 Difference]: With dead ends: 23 [2018-07-25 13:16:10,702 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 13:16:10,703 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=323, Invalid=733, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:16:10,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 13:16:10,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-25 13:16:10,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 13:16:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-25 13:16:10,726 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-07-25 13:16:10,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:10,726 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-25 13:16:10,726 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 13:16:10,727 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-25 13:16:10,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 13:16:10,727 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:10,727 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1] [2018-07-25 13:16:10,728 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ElevatorErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:10,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1300713427, now seen corresponding path program 9 times [2018-07-25 13:16:10,728 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:12,192 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:12,295 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 24 [2018-07-25 13:16:12,541 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:12,542 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:12,635 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:12,636 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:12,761 WARN L169 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 43 [2018-07-25 13:16:13,045 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:13,220 WARN L169 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 60 [2018-07-25 13:16:13,895 WARN L169 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 75 [2018-07-25 13:16:14,505 WARN L169 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 352 DAG size of output: 57 [2018-07-25 13:16:15,049 WARN L169 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 387 DAG size of output: 66 [2018-07-25 13:16:15,572 WARN L169 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 397 DAG size of output: 57 [2018-07-25 13:16:15,682 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:16,058 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:16,304 WARN L169 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 497 DAG size of output: 53 [2018-07-25 13:16:17,159 WARN L169 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 56 [2018-07-25 13:16:17,264 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:17,264 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:17,430 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:17,800 WARN L169 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 469 DAG size of output: 80 [2018-07-25 13:16:18,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:18,146 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:18,305 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:18,312 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:18,319 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:18,555 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:18,650 WARN L169 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 492 DAG size of output: 95 [2018-07-25 13:16:19,074 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-25 13:16:19,330 WARN L169 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 385 DAG size of output: 56 [2018-07-25 13:16:19,840 WARN L169 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 381 DAG size of output: 64 [2018-07-25 13:16:19,953 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:19,953 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:19,953 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 13:16:19,954 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 13:16:19,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 13:16:19,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:16:19,955 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 19 states. [2018-07-25 13:16:20,292 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 100 [2018-07-25 13:16:20,445 WARN L169 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 97 [2018-07-25 13:16:20,632 WARN L169 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 105 [2018-07-25 13:16:20,768 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 97 [2018-07-25 13:16:20,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:20,797 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-07-25 13:16:20,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:16:20,798 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 21 [2018-07-25 13:16:20,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:20,798 INFO L225 Difference]: With dead ends: 22 [2018-07-25 13:16:20,798 INFO L226 Difference]: Without dead ends: 0 [2018-07-25 13:16:20,799 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=242, Invalid=514, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:16:20,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-25 13:16:20,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-25 13:16:20,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-25 13:16:20,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-25 13:16:20,800 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-07-25 13:16:20,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:20,801 INFO L472 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-25 13:16:20,801 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 13:16:20,801 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-25 13:16:20,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-25 13:16:20,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-25 13:16:21,140 WARN L169 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 510 [2018-07-25 13:16:21,468 WARN L169 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 524 DAG size of output: 478 [2018-07-25 13:16:22,154 WARN L169 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 503 DAG size of output: 104 [2018-07-25 13:16:22,697 WARN L169 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 470 DAG size of output: 92 [2018-07-25 13:16:22,701 INFO L418 ceAbstractionStarter]: At program point ElevatorErr0ASSERT_VIOLATIONASSERT(line 79) the Hoare annotation is: false [2018-07-25 13:16:22,701 INFO L422 ceAbstractionStarter]: For program point L93(lines 93 110) no Hoare annotation was computed. [2018-07-25 13:16:22,701 INFO L422 ceAbstractionStarter]: For program point L118(lines 118 144) no Hoare annotation was computed. [2018-07-25 13:16:22,701 INFO L422 ceAbstractionStarter]: For program point L168(lines 168 172) no Hoare annotation was computed. [2018-07-25 13:16:22,702 INFO L422 ceAbstractionStarter]: For program point L103(lines 103 110) no Hoare annotation was computed. [2018-07-25 13:16:22,702 INFO L422 ceAbstractionStarter]: For program point L137(lines 137 144) no Hoare annotation was computed. [2018-07-25 13:16:22,702 INFO L422 ceAbstractionStarter]: For program point L137-2(lines 113 164) no Hoare annotation was computed. [2018-07-25 13:16:22,702 INFO L422 ceAbstractionStarter]: For program point L96(lines 96 110) no Hoare annotation was computed. [2018-07-25 13:16:22,702 INFO L422 ceAbstractionStarter]: For program point L105(lines 105 110) no Hoare annotation was computed. [2018-07-25 13:16:22,702 INFO L422 ceAbstractionStarter]: For program point L72(lines 72 77) no Hoare annotation was computed. [2018-07-25 13:16:22,702 INFO L422 ceAbstractionStarter]: For program point L105-2(lines 91 144) no Hoare annotation was computed. [2018-07-25 13:16:22,702 INFO L422 ceAbstractionStarter]: For program point L155(lines 155 164) no Hoare annotation was computed. [2018-07-25 13:16:22,703 INFO L422 ceAbstractionStarter]: For program point L155-1(lines 147 190) no Hoare annotation was computed. [2018-07-25 13:16:22,703 INFO L422 ceAbstractionStarter]: For program point L180(lines 180 190) no Hoare annotation was computed. [2018-07-25 13:16:22,703 INFO L422 ceAbstractionStarter]: For program point L180-1(lines 167 190) no Hoare annotation was computed. [2018-07-25 13:16:22,705 INFO L418 ceAbstractionStarter]: At program point L48-1(lines 13 197) the Hoare annotation is: (let ((.cse27 (+ Elevator_current 1))) (let ((.cse13 (= Elevator_goal Elevator_current)) (.cse25 (<= 0 Elevator_dir)) (.cse26 (<= Elevator_dir 0)) (.cse24 (= Elevator_qCSP 3)) (.cse12 (= Elevator_qCSP 2)) (.cse28 (= 1 Elevator_dir)) (.cse14 (<= Elevator_goal Elevator_max)) (.cse6 (<= .cse27 Elevator_goal)) (.cse29 (+ Elevator_dir 1)) (.cse1 (+ Elevator_goal 1))) (let ((.cse5 (not (= Elevator_qDC1 1))) (.cse4 (<= Elevator_qDC2 3)) (.cse8 (= Elevator_current Elevator_goal)) (.cse17 (<= .cse1 Elevator_current)) (.cse2 (= .cse29 0)) (.cse16 (and .cse28 .cse14 .cse6)) (.cse15 (<= 3 Elevator_qDC2)) (.cse21 (not .cse12)) (.cse19 (<= Elevator_min Elevator_goal)) (.cse11 (<= Elevator_qCSP 2)) (.cse0 (not .cse24)) (.cse3 (and .cse25 .cse26)) (.cse20 (not .cse13)) (.cse18 (= 0 .cse29)) (.cse9 (+ Elevator_min 1))) (and (or .cse0 (and (or (<= (+ Elevator_min 2) Elevator_current) (= .cse1 Elevator_current)) .cse2) .cse3 .cse4 .cse5 (and (= Elevator_dir 1) .cse6)) (let ((.cse10 (+ Elevator_dir Elevator_current))) (let ((.cse7 (<= .cse10 Elevator_max))) (or (and .cse7 (<= 1 Elevator_dir)) .cse8 (and .cse7 (<= .cse9 .cse10)) (and (<= Elevator_min .cse10) .cse2) .cse3 (<= 4 Elevator_qCSP) .cse5 .cse11))) (or .cse12 (and (or .cse0 .cse13 (and (not (= Elevator_qDC1 2)) .cse14 .cse5) (and .cse15 .cse14) .cse16 (and .cse17 .cse18 .cse19)) (or (not (= Elevator_qDC2 1)) (and .cse0 .cse8)) (or .cse0 .cse20 .cse15 .cse5))) (or (and (<= Elevator_min Elevator_current) (<= Elevator_current Elevator_max)) (and (not .cse8) .cse4 (< 2 Elevator_qDC2))) (or .cse21 (and .cse20 .cse19)) (or (let ((.cse23 (and .cse25 .cse26 .cse21)) (.cse22 (= Elevator_qDC2 2))) (and (or .cse8 (not .cse22) .cse23 (and .cse17 .cse2 .cse19) .cse16) (or (and .cse14 (or (<= Elevator_current Elevator_goal) .cse19)) .cse24) (or .cse23 .cse22 .cse15 (<= Elevator_qDC2 0)))) (and .cse14 .cse19 .cse11)) (or .cse0 (and (<= Elevator_qDC2 2) (<= 2 Elevator_qDC2)) (and (<= .cse27 Elevator_max) .cse28) .cse3 (and .cse20 .cse18 (<= .cse9 Elevator_current)) (= Elevator_qDC2 3)))))) [2018-07-25 13:16:22,706 INFO L422 ceAbstractionStarter]: For program point L131(lines 131 144) no Hoare annotation was computed. [2018-07-25 13:16:22,706 INFO L422 ceAbstractionStarter]: For program point L98(lines 98 110) no Hoare annotation was computed. [2018-07-25 13:16:22,706 INFO L422 ceAbstractionStarter]: For program point L156(lines 156 161) no Hoare annotation was computed. [2018-07-25 13:16:22,707 INFO L422 ceAbstractionStarter]: For program point L181(lines 181 187) no Hoare annotation was computed. [2018-07-25 13:16:22,707 INFO L422 ceAbstractionStarter]: For program point L148(lines 148 154) no Hoare annotation was computed. [2018-07-25 13:16:22,707 INFO L422 ceAbstractionStarter]: For program point L173(lines 173 190) no Hoare annotation was computed. [2018-07-25 13:16:22,707 INFO L422 ceAbstractionStarter]: For program point L74(lines 74 77) no Hoare annotation was computed. [2018-07-25 13:16:22,708 INFO L418 ceAbstractionStarter]: At program point L74-2(lines 70 77) the Hoare annotation is: (let ((.cse17 (= Elevator_qCSP 2)) (.cse24 (+ Elevator_dir 1))) (let ((.cse14 (= Elevator_qCSP 3)) (.cse4 (= Elevator_goal Elevator_current)) (.cse18 (+ Elevator_current 1)) (.cse25 (+ Elevator_goal 1)) (.cse21 (= 0 .cse24)) (.cse13 (<= Elevator_min Elevator_goal)) (.cse26 (<= 0 Elevator_dir)) (.cse27 (<= Elevator_dir 0)) (.cse16 (not .cse17))) (let ((.cse6 (<= Elevator_goal Elevator_max)) (.cse0 (<= Elevator_qCSP 1)) (.cse1 (and .cse26 .cse27 .cse16)) (.cse11 (and (<= .cse25 Elevator_current) .cse21 .cse13)) (.cse9 (= 1 Elevator_dir)) (.cse8 (<= 3 Elevator_qDC2)) (.cse12 (= Elevator_current Elevator_goal)) (.cse20 (<= Elevator_qDC2 3)) (.cse19 (and .cse26 .cse27)) (.cse10 (<= .cse18 Elevator_goal)) (.cse7 (not (= Elevator_qDC1 1))) (.cse15 (not .cse4)) (.cse2 (not (= Elevator_qDC2 1))) (.cse3 (not .cse14)) (.cse5 (= Elevator_qDC1 2))) (and (or .cse0 .cse1 .cse2) (or .cse3 .cse4 (and (not .cse5) .cse6 .cse7) (and .cse8 .cse6) (and .cse9 .cse6 .cse10) .cse11) (<= Elevator_min Elevator_current) (<= Elevator_current Elevator_max) (or .cse2 (and .cse3 .cse12)) (or (and .cse6 .cse13) .cse14) (or .cse15 .cse16) (or (and (not .cse12) (or .cse17 .cse0 .cse1 (and (<= Elevator_current Elevator_goal) .cse9) .cse11)) (not (= Elevator_qDC2 2)) (= Elevator_qCSP 1)) (or .cse3 .cse15 .cse8 .cse7) (or .cse3 (and (<= .cse18 Elevator_max) .cse9) .cse19 (and .cse4 .cse8 .cse20) (and .cse15 .cse21 (<= (+ Elevator_min 1) Elevator_current))) (let ((.cse22 (not (= Elevator_qDC2 3)))) (or (and .cse12 .cse20) (and .cse22 .cse7) .cse19 (let ((.cse23 (and (or .cse3 (and .cse15 (= .cse24 0))) (or (and .cse2 .cse22 (or (<= (+ Elevator_min 2) Elevator_current) (= .cse25 Elevator_current))) .cse3 .cse5)))) (and (or .cse23 (= Elevator_dir 1)) (or .cse23 (and .cse22 .cse10) .cse7))))))))) [2018-07-25 13:16:22,709 INFO L422 ceAbstractionStarter]: For program point L66(lines 66 68) no Hoare annotation was computed. [2018-07-25 13:16:22,709 INFO L422 ceAbstractionStarter]: For program point L66-2(lines 66 77) no Hoare annotation was computed. [2018-07-25 13:16:22,709 INFO L425 ceAbstractionStarter]: At program point ElevatorEXIT(lines 13 197) the Hoare annotation is: true [2018-07-25 13:16:22,709 INFO L422 ceAbstractionStarter]: For program point L91(lines 91 110) no Hoare annotation was computed. [2018-07-25 13:16:22,709 INFO L422 ceAbstractionStarter]: For program point L174(lines 174 179) no Hoare annotation was computed. [2018-07-25 13:16:22,710 INFO L422 ceAbstractionStarter]: For program point L125(lines 125 144) no Hoare annotation was computed. [2018-07-25 13:16:22,710 INFO L425 ceAbstractionStarter]: At program point ElevatorENTRY(lines 13 197) the Hoare annotation is: true [2018-07-25 13:16:22,710 INFO L422 ceAbstractionStarter]: For program point L101(lines 101 110) no Hoare annotation was computed. [2018-07-25 13:16:22,743 INFO L202 PluginConnector]: Adding new model Elevator.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:16:22 BoogieIcfgContainer [2018-07-25 13:16:22,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:16:22,745 INFO L168 Benchmark]: Toolchain (without parser) took 57322.40 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.7 GB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 474.3 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-25 13:16:22,746 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 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 13:16:22,746 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.35 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 13:16:22,747 INFO L168 Benchmark]: Boogie Preprocessor took 30.59 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 13:16:22,747 INFO L168 Benchmark]: RCFGBuilder took 911.53 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 13:16:22,748 INFO L168 Benchmark]: TraceAbstraction took 56333.42 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 442.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-25 13:16:22,752 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 0.18 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 42.35 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 30.59 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 911.53 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 56333.42 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 442.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: 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: ((((((((((!(qCSP == 3) || ((min + 2 <= current || goal + 1 == current) && dir + 1 == 0)) || (0 <= dir && dir <= 0)) || qDC2 <= 3) || !(qDC1 == 1)) || (dir == 1 && current + 1 <= goal)) && ((((((((dir + current <= max && 1 <= dir) || current == goal) || (dir + current <= max && min + 1 <= dir + current)) || (min <= dir + current && dir + 1 == 0)) || (0 <= dir && dir <= 0)) || 4 <= qCSP) || !(qDC1 == 1)) || qCSP <= 2)) && (qCSP == 2 || (((((((!(qCSP == 3) || goal == current) || ((!(qDC1 == 2) && goal <= max) && !(qDC1 == 1))) || (3 <= qDC2 && goal <= max)) || ((1 == dir && goal <= max) && current + 1 <= goal)) || ((goal + 1 <= current && 0 == dir + 1) && min <= goal)) && (!(qDC2 == 1) || (!(qCSP == 3) && current == goal))) && (((!(qCSP == 3) || !(goal == current)) || 3 <= qDC2) || !(qDC1 == 1))))) && ((min <= current && current <= max) || ((!(current == goal) && qDC2 <= 3) && 2 < qDC2))) && (!(qCSP == 2) || (!(goal == current) && min <= goal))) && (((((((current == goal || !(qDC2 == 2)) || ((0 <= dir && dir <= 0) && !(qCSP == 2))) || ((goal + 1 <= current && dir + 1 == 0) && min <= goal)) || ((1 == dir && goal <= max) && current + 1 <= goal)) && ((goal <= max && (current <= goal || min <= goal)) || qCSP == 3)) && (((((0 <= dir && dir <= 0) && !(qCSP == 2)) || qDC2 == 2) || 3 <= qDC2) || qDC2 <= 0)) || ((goal <= max && min <= goal) && qCSP <= 2))) && (((((!(qCSP == 3) || (qDC2 <= 2 && 2 <= qDC2)) || (current + 1 <= max && 1 == dir)) || (0 <= dir && dir <= 0)) || ((!(goal == current) && 0 == dir + 1) && min + 1 <= current)) || qDC2 == 3) - ProcedureContractResult [Line: 13]: Procedure Contract for Elevator Derived contract for procedure Elevator: true - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. SAFE Result, 56.2s OverallTime, 10 OverallIterations, 10 TraceHistogramMax, 8.6s AutomataDifference, 0.0s DeadEndRemovalTime, 1.8s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 SDtfs, 78 SDslu, 3 SDs, 0 SdLazy, 188 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 0 SyntacticMatches, 5 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 46.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=9, 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 22 NumberOfFragments, 719 HoareAnnotationTreeSize, 5 FomulaSimplifications, 1491 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 5 FomulaSimplificationsInter, 11015 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 43.9s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 209634 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 0/330 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.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-16-22-767.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Elevator.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-16-22-767.csv Received shutdown request...