java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/programs/real-life/DraegerElevator-FSEN2007.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:06:53,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:06:53,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:06:53,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:06:53,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:06:53,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:06:53,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:06:53,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:06:53,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:06:53,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:06:53,595 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:06:53,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:06:53,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:06:53,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:06:53,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:06:53,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:06:53,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:06:53,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:06:53,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:06:53,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:06:53,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:06:53,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:06:53,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:06:53,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:06:53,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-05 10:06:53,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:06:53,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:06:53,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:06:53,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:06:53,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:06:53,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:06:53,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:06:53,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:06:53,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:06:53,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:06:53,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:06:53,701 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:06:53,716 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:06:53,722 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:06:53,723 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:06:53,724 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:06:53,725 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/DraegerElevator-FSEN2007.bpl [2019-08-05 10:06:53,725 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/DraegerElevator-FSEN2007.bpl' [2019-08-05 10:06:53,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:06:53,767 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:06:53,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:06:53,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:06:53,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:06:53,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:53" (1/1) ... [2019-08-05 10:06:53,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:53" (1/1) ... [2019-08-05 10:06:53,803 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 10:06:53,803 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 10:06:53,804 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 10:06:53,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:06:53,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:06:53,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:06:53,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:06:53,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:53" (1/1) ... [2019-08-05 10:06:53,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:53" (1/1) ... [2019-08-05 10:06:53,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:53" (1/1) ... [2019-08-05 10:06:53,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:53" (1/1) ... [2019-08-05 10:06:53,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:53" (1/1) ... [2019-08-05 10:06:53,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:53" (1/1) ... [2019-08-05 10:06:53,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:53" (1/1) ... [2019-08-05 10:06:53,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:06:53,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:06:53,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:06:53,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:06:53,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-05 10:06:53,902 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-08-05 10:06:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-05 10:06:53,903 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-05 10:06:54,669 INFO L275 CfgBuilder]: Using library mode [2019-08-05 10:06:54,670 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-05 10:06:54,671 INFO L202 PluginConnector]: Adding new model DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:06:54 BoogieIcfgContainer [2019-08-05 10:06:54,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:06:54,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:06:54,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:06:54,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:06:54,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:53" (1/2) ... [2019-08-05 10:06:54,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0189 and model type DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:06:54, skipping insertion in model container [2019-08-05 10:06:54,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:06:54" (2/2) ... [2019-08-05 10:06:54,681 INFO L109 eAbstractionObserver]: Analyzing ICFG DraegerElevator-FSEN2007.bpl [2019-08-05 10:06:54,691 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:06:54,701 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:06:54,718 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:06:54,748 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:06:54,749 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:06:54,750 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:06:54,750 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:06:54,750 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:06:54,750 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:06:54,750 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:06:54,751 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:06:54,751 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:06:54,763 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2019-08-05 10:06:54,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 10:06:54,774 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:06:54,776 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 10:06:54,779 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2019-08-05 10:06:54,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:06:54,786 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-08-05 10:06:54,827 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:06:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:06:54,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 10:06:54,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:06:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:06:54,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:06:54,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 10:06:54,913 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:06:54,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:06:54,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:06:54,928 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2019-08-05 10:06:54,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:06:54,976 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2019-08-05 10:06:54,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:06:54,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 10:06:54,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:06:54,988 INFO L225 Difference]: With dead ends: 6 [2019-08-05 10:06:54,988 INFO L226 Difference]: Without dead ends: 5 [2019-08-05 10:06:54,990 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:06:55,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-08-05 10:06:55,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-08-05 10:06:55,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-05 10:06:55,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-08-05 10:06:55,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 2 [2019-08-05 10:06:55,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:06:55,025 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-08-05 10:06:55,025 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:06:55,025 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-08-05 10:06:55,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:06:55,026 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:06:55,026 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:06:55,026 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2019-08-05 10:06:55,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:06:55,027 INFO L82 PathProgramCache]: Analyzing trace with hash 929196, now seen corresponding path program 1 times [2019-08-05 10:06:55,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:06:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:06:55,094 WARN L254 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 8 conjunts are in the unsatisfiable core [2019-08-05 10:06:55,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:06:55,174 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:55,175 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:55,176 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:55,182 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:55,184 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:55,335 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2019-08-05 10:06:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:06:55,336 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:06:55,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2019-08-05 10:06:55,338 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:06:55,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:06:55,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:06:55,339 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2019-08-05 10:06:55,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:06:55,442 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-08-05 10:06:55,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:06:55,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 10:06:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:06:55,442 INFO L225 Difference]: With dead ends: 7 [2019-08-05 10:06:55,443 INFO L226 Difference]: Without dead ends: 7 [2019-08-05 10:06:55,444 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:06:55,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-08-05 10:06:55,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-08-05 10:06:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-05 10:06:55,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-05 10:06:55,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-08-05 10:06:55,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:06:55,446 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-05 10:06:55,446 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:06:55,446 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-05 10:06:55,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:06:55,447 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:06:55,447 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1] [2019-08-05 10:06:55,447 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2019-08-05 10:06:55,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:06:55,448 INFO L82 PathProgramCache]: Analyzing trace with hash 892961109, now seen corresponding path program 2 times [2019-08-05 10:06:55,449 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:06:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:06:55,499 WARN L254 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 13 conjunts are in the unsatisfiable core [2019-08-05 10:06:55,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:06:55,612 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:55,615 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:55,617 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:55,622 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:55,626 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,087 WARN L188 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2019-08-05 10:06:56,105 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,108 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,109 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,111 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,112 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,119 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,121 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,122 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,127 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,128 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,130 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-05 10:06:56,131 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,133 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,136 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,138 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,142 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,144 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-05 10:06:56,146 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-05 10:06:56,148 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,150 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,153 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,155 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:06:56,220 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:06:56,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 10:06:56,221 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:06:56,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:06:56,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:06:56,221 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-08-05 10:06:56,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:06:56,288 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2019-08-05 10:06:56,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:06:56,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-08-05 10:06:56,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:06:56,289 INFO L225 Difference]: With dead ends: 6 [2019-08-05 10:06:56,289 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:06:56,290 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:06:56,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:06:56,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:06:56,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:06:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:06:56,292 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-08-05 10:06:56,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:06:56,292 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:06:56,292 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:06:56,292 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:06:56,292 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:06:56,297 INFO L202 PluginConnector]: Adding new model DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:06:56 BoogieIcfgContainer [2019-08-05 10:06:56,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:06:56,301 INFO L168 Benchmark]: Toolchain (without parser) took 2533.33 ms. Allocated memory was 133.7 MB in the beginning and 170.4 MB in the end (delta: 36.7 MB). Free memory was 111.2 MB in the beginning and 92.6 MB in the end (delta: 18.6 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2019-08-05 10:06:56,302 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 133.7 MB. Free memory was 112.5 MB in the beginning and 112.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 10:06:56,303 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.80 ms. Allocated memory is still 133.7 MB. Free memory was 111.0 MB in the beginning and 109.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-08-05 10:06:56,304 INFO L168 Benchmark]: Boogie Preprocessor took 29.15 ms. Allocated memory is still 133.7 MB. Free memory was 109.2 MB in the beginning and 108.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:06:56,305 INFO L168 Benchmark]: RCFGBuilder took 835.69 ms. Allocated memory is still 133.7 MB. Free memory was 108.1 MB in the beginning and 81.2 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2019-08-05 10:06:56,306 INFO L168 Benchmark]: TraceAbstraction took 1624.47 ms. Allocated memory was 133.7 MB in the beginning and 170.4 MB in the end (delta: 36.7 MB). Free memory was 80.8 MB in the beginning and 92.6 MB in the end (delta: -11.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2019-08-05 10:06:56,311 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 133.7 MB. Free memory was 112.5 MB in the beginning and 112.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 38.80 ms. Allocated memory is still 133.7 MB. Free memory was 111.0 MB in the beginning and 109.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.15 ms. Allocated memory is still 133.7 MB. Free memory was 109.2 MB in the beginning and 108.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 835.69 ms. Allocated memory is still 133.7 MB. Free memory was 108.1 MB in the beginning and 81.2 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1624.47 ms. Allocated memory was 133.7 MB in the beginning and 170.4 MB in the end (delta: 36.7 MB). Free memory was 80.8 MB in the beginning and 92.6 MB in the end (delta: -11.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: loop invariant is valid and assertion always holds For all program executions holds that loop invariant is valid and assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 6 SDslu, 0 SDs, 0 SdLazy, 19 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=2, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 657 SizeOfPredicates, 6 NumberOfNonLiveVariables, 36 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/5 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...