java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/real-life/RailwayCrossing-Incorrenct.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-935f392 [2018-07-23 13:36:26,677 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 13:36:26,679 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 13:36:26,691 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 13:36:26,692 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 13:36:26,693 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 13:36:26,694 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 13:36:26,696 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 13:36:26,698 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 13:36:26,699 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 13:36:26,700 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 13:36:26,700 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 13:36:26,701 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 13:36:26,702 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 13:36:26,704 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 13:36:26,704 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 13:36:26,705 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 13:36:26,707 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 13:36:26,709 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 13:36:26,711 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 13:36:26,712 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 13:36:26,713 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 13:36:26,715 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 13:36:26,716 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 13:36:26,716 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 13:36:26,717 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 13:36:26,718 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 13:36:26,719 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 13:36:26,720 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 13:36:26,721 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 13:36:26,721 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 13:36:26,722 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 13:36:26,724 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 13:36:26,738 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 13:36:26,738 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 13:36:26,740 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 13:36:26,740 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 13:36:26,740 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 13:36:26,741 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 13:36:26,741 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 13:36:26,741 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 13:36:26,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 13:36:26,803 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 13:36:26,806 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 13:36:26,808 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 13:36:26,809 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 13:36:26,809 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/RailwayCrossing-Incorrenct.bpl [2018-07-23 13:36:26,810 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/RailwayCrossing-Incorrenct.bpl' [2018-07-23 13:36:26,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 13:36:26,860 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 13:36:26,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 13:36:26,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 13:36:26,861 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 13:36:26,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/1) ... [2018-07-23 13:36:26,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/1) ... [2018-07-23 13:36:26,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/1) ... [2018-07-23 13:36:26,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/1) ... [2018-07-23 13:36:26,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/1) ... [2018-07-23 13:36:26,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/1) ... [2018-07-23 13:36:26,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/1) ... [2018-07-23 13:36:26,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 13:36:26,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 13:36:26,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 13:36:26,912 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 13:36:26,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/1) ... [2018-07-23 13:36:26,988 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-07-23 13:36:26,989 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-07-23 13:36:26,989 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-07-23 13:36:27,193 INFO L258 CfgBuilder]: Using library mode [2018-07-23 13:36:27,194 INFO L202 PluginConnector]: Adding new model RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:36:27 BoogieIcfgContainer [2018-07-23 13:36:27,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 13:36:27,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 13:36:27,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 13:36:27,199 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 13:36:27,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:36:26" (1/2) ... [2018-07-23 13:36:27,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db74ab0 and model type RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:36:27, skipping insertion in model container [2018-07-23 13:36:27,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:36:27" (2/2) ... [2018-07-23 13:36:27,204 INFO L112 eAbstractionObserver]: Analyzing ICFG RailwayCrossing-Incorrenct.bpl [2018-07-23 13:36:27,215 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 13:36:27,223 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 13:36:27,272 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 13:36:27,273 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 13:36:27,273 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 13:36:27,273 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 13:36:27,273 INFO L376 AbstractCegarLoop]: Backedges is CANONICAL [2018-07-23 13:36:27,273 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 13:36:27,274 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 13:36:27,274 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 13:36:27,274 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 13:36:27,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-23 13:36:27,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-23 13:36:27,299 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:36:27,300 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-23 13:36:27,300 INFO L414 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0AssertViolationASSERT]=== [2018-07-23 13:36:27,306 INFO L82 PathProgramCache]: Analyzing trace with hash 30496, now seen corresponding path program 1 times [2018-07-23 13:36:27,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:36:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:36:27,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:36:27,384 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:36:27,384 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 13:36:27,386 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:36:27,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:36:27,387 INFO L185 omatonBuilderFactory]: Interpolants [8#true, 9#false, 10#(<= (+ GateController_time 1000) GateController_thousand)] [2018-07-23 13:36:27,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:36:27,389 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 13:36:27,405 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 13:36:27,406 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:36:27,409 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-07-23 13:36:27,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:36:27,440 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-23 13:36:27,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 13:36:27,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-23 13:36:27,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:36:27,455 INFO L225 Difference]: With dead ends: 9 [2018-07-23 13:36:27,455 INFO L226 Difference]: Without dead ends: 5 [2018-07-23 13:36:27,459 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:36:27,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-07-23 13:36:27,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-07-23 13:36:27,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-07-23 13:36:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-07-23 13:36:27,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-07-23 13:36:27,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:36:27,514 INFO L471 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-07-23 13:36:27,514 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 13:36:27,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-07-23 13:36:27,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 13:36:27,515 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:36:27,515 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 13:36:27,516 INFO L414 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0AssertViolationASSERT]=== [2018-07-23 13:36:27,516 INFO L82 PathProgramCache]: Analyzing trace with hash 955939, now seen corresponding path program 1 times [2018-07-23 13:36:27,517 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:36:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:36:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:36:27,562 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:36:27,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 13:36:27,563 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:36:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:36:27,563 INFO L185 omatonBuilderFactory]: Interpolants [39#true, 40#false, 41#(<= (+ GateController_time 1000) GateController_thousand), 42#(<= (+ GateController_time 1) GateController_thousand)] [2018-07-23 13:36:27,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:36:27,571 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:36:27,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:36:27,572 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:36:27,573 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-07-23 13:36:27,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:36:27,591 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-07-23 13:36:27,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 13:36:27,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-23 13:36:27,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:36:27,592 INFO L225 Difference]: With dead ends: 8 [2018-07-23 13:36:27,593 INFO L226 Difference]: Without dead ends: 6 [2018-07-23 13:36:27,594 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:36:27,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-23 13:36:27,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-23 13:36:27,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-23 13:36:27,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-23 13:36:27,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-07-23 13:36:27,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:36:27,597 INFO L471 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-23 13:36:27,597 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:36:27,597 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-23 13:36:27,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-23 13:36:27,598 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:36:27,598 INFO L357 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-23 13:36:27,598 INFO L414 AbstractCegarLoop]: === Iteration 3 === [GateControllerErr0AssertViolationASSERT]=== [2018-07-23 13:36:27,599 INFO L82 PathProgramCache]: Analyzing trace with hash 29644672, now seen corresponding path program 2 times [2018-07-23 13:36:27,599 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:36:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-07-23 13:36:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-07-23 13:36:27,637 INFO L423 BasicCegarLoop]: Counterexample might be feasible [2018-07-23 13:36:27,664 INFO L202 PluginConnector]: Adding new model RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:36:27 BoogieIcfgContainer [2018-07-23 13:36:27,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 13:36:27,668 INFO L168 Benchmark]: Toolchain (without parser) took 808.63 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. [2018-07-23 13:36:27,670 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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. [2018-07-23 13:36:27,671 INFO L168 Benchmark]: Boogie Preprocessor took 50.39 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. [2018-07-23 13:36:27,672 INFO L168 Benchmark]: RCFGBuilder took 283.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 13:36:27,675 INFO L168 Benchmark]: TraceAbstraction took 470.69 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-23 13:36:27,679 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 0.19 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 50.39 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 283.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 470.69 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 39]: assertion can be violated assertion can be violated We found a FailurePath: [L16] gate := 0; [L17] time := 0; [L19] one := 1; [L20] hundred := 100 * one; [L21] thousand := 1000 * one; [L22] alarmTrain := false; VAL [alarmTrain=false, gate=0, hundred=100, one=1, thousand=1000, time=0] [L25] COND TRUE time < thousand [L27] COND FALSE !(gateMotorFailure) [L30] COND TRUE gate < hundred [L31] gate := gate + 1; [L34] havoc increment; [L35] assume increment < 1000; [L36] time := time + increment; VAL [alarmTrain=false, gate=1, gateMotorFailure=false, hundred=100, increment=999, one=1, thousand=1000, time=999] [L25] COND TRUE time < thousand [L27] COND FALSE !(gateMotorFailure) [L30] COND TRUE gate < hundred [L31] gate := gate + 1; [L34] havoc increment; [L35] assume increment < 1000; [L36] time := time + increment; VAL [alarmTrain=false, gate=2, gateMotorFailure=false, hundred=100, increment=1, one=1, thousand=1000, time=1000] [L25] COND FALSE !(time < thousand) VAL [alarmTrain=false, gate=2, gateMotorFailure=false, hundred=100, increment=1, one=1, thousand=1000, time=1000] [L39] assert alarmTrain || gate == hundred; VAL [alarmTrain=false, gate=2, gateMotorFailure=false, hundred=100, increment=1, one=1, thousand=1000, time=1000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 4 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/1 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 45 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/RailwayCrossing-Incorrenct.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_13-36-27-692.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/RailwayCrossing-Incorrenct.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_13-36-27-692.csv Received shutdown request...