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-pdr-z3.epf -i ../../../trunk/examples/programs/real-life/RailwayCrossing.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:39:58,300 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:39:58,303 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:39:58,317 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:39:58,317 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:39:58,318 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:39:58,319 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:39:58,321 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:39:58,327 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:39:58,328 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:39:58,330 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:39:58,330 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:39:58,333 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:39:58,334 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:39:58,338 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:39:58,339 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:39:58,340 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:39:58,345 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:39:58,349 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:39:58,351 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:39:58,352 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:39:58,359 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:39:58,362 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:39:58,363 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:39:58,363 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:39:58,364 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:39:58,366 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:39:58,366 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:39:58,367 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:39:58,368 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:39:58,371 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:39:58,374 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 13:39:58,374 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 13:39:58,374 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 13:39:58,377 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 13:39:58,378 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 13:39:58,378 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf [2018-07-25 13:39:58,394 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:39:58,395 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:39:58,399 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:39:58,399 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 13:39:58,400 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-25 13:39:58,400 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:39:58,400 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:39:58,479 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:39:58,494 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:39:58,499 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:39:58,502 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:39:58,503 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:39:58,504 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/RailwayCrossing.bpl [2018-07-25 13:39:58,504 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/RailwayCrossing.bpl' [2018-07-25 13:39:58,546 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:39:58,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:39:58,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:39:58,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:39:58,549 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:39:58,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:39:58" (1/1) ... [2018-07-25 13:39:58,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:39:58" (1/1) ... [2018-07-25 13:39:58,586 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 13:39:58,587 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 13:39:58,587 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 13:39:58,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:39:58,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:39:58,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:39:58,590 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:39:58,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:39:58" (1/1) ... [2018-07-25 13:39:58,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:39:58" (1/1) ... [2018-07-25 13:39:58,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:39:58" (1/1) ... [2018-07-25 13:39:58,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:39:58" (1/1) ... [2018-07-25 13:39:58,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:39:58" (1/1) ... [2018-07-25 13:39:58,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:39:58" (1/1) ... [2018-07-25 13:39:58,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:39:58" (1/1) ... [2018-07-25 13:39:58,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:39:58,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:39:58,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:39:58,614 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:39:58,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:39:58" (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 [2018-07-25 13:39:58,694 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-07-25 13:39:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-07-25 13:39:58,694 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-07-25 13:39:59,284 INFO L270 CfgBuilder]: Using library mode [2018-07-25 13:39:59,285 INFO L202 PluginConnector]: Adding new model RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:39:59 BoogieIcfgContainer [2018-07-25 13:39:59,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:39:59,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:39:59,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:39:59,290 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:39:59,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:39:58" (1/2) ... [2018-07-25 13:39:59,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5132d710 and model type RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:39:59, skipping insertion in model container [2018-07-25 13:39:59,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:39:59" (2/2) ... [2018-07-25 13:39:59,294 INFO L112 eAbstractionObserver]: Analyzing ICFG RailwayCrossing.bpl [2018-07-25 13:39:59,303 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:39:59,311 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:39:59,355 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:39:59,356 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:39:59,356 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:39:59,356 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 13:39:59,356 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:39:59,356 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:39:59,356 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:39:59,357 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:39:59,357 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:39:59,371 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-25 13:39:59,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-25 13:39:59,380 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:39:59,381 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-25 13:39:59,382 INFO L415 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:39:59,387 INFO L82 PathProgramCache]: Analyzing trace with hash 30496, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:39:59,408 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:39:59,580 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:39:59,581 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 13:39:59,584 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:39:59,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:39:59,590 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:39:59,592 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 4 states. [2018-07-25 13:39:59,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:39:59,653 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2018-07-25 13:39:59,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:39:59,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2018-07-25 13:39:59,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:39:59,665 INFO L225 Difference]: With dead ends: 8 [2018-07-25 13:39:59,665 INFO L226 Difference]: Without dead ends: 5 [2018-07-25 13:39:59,669 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:39:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-07-25 13:39:59,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-07-25 13:39:59,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-07-25 13:39:59,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-07-25 13:39:59,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-07-25 13:39:59,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:39:59,709 INFO L472 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-07-25 13:39:59,710 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:39:59,710 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-07-25 13:39:59,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 13:39:59,710 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:39:59,710 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 13:39:59,711 INFO L415 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:39:59,711 INFO L82 PathProgramCache]: Analyzing trace with hash 955939, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:39:59,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:40:00,561 WARN L169 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2018-07-25 13:40:01,301 WARN L169 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2018-07-25 13:40:03,910 ERROR L403 Pdr]: Internal query 156#(and (not (and (exists ((v_GateController_alarmTrain_15 Bool) (v_GateController_gateMotorFailure_18 Bool) (v_GateController_gate_21 Int)) (and (or (and (or (and (= GateController_gate v_GateController_gate_21) (<= GateController_hundred GateController_gate)) (and (< GateController_gate GateController_hundred) (= v_GateController_gate_21 (+ GateController_gate 1)))) (not v_GateController_gateMotorFailure_18) (= v_GateController_alarmTrain_15 GateController_alarmTrain)) (and (= GateController_gate v_GateController_gate_21) v_GateController_alarmTrain_15 v_GateController_gateMotorFailure_18)) (not v_GateController_alarmTrain_15) (or (= GateController_gateMotorFailure v_GateController_gateMotorFailure_18) v_GateController_gateMotorFailure_18) (not (= GateController_hundred v_GateController_gate_21)))) (exists ((v_GateController_increment_4 Int)) (and (<= GateController_thousand (+ v_GateController_increment_4 GateController_time)) (< v_GateController_increment_4 10))))) (not (and (not GateController_alarmTrain) (<= GateController_thousand GateController_time) (not (= GateController_hundred GateController_gate)))) (not (and (exists ((v_GateController_time_15 Int)) (and (< v_GateController_time_15 GateController_thousand) (< v_GateController_time_15 (+ GateController_time 10)) (exists ((v_GateController_increment_4 Int)) (and (<= GateController_thousand (+ v_GateController_increment_4 v_GateController_time_15)) (< v_GateController_increment_4 10))))) (exists ((v_GateController_gateMotorFailure_19 Bool) (v_GateController_alarmTrain_16 Bool) (v_GateController_gate_22 Int)) (and (or (and v_GateController_gateMotorFailure_19 (= GateController_gate v_GateController_gate_22) v_GateController_alarmTrain_16) (and (not v_GateController_gateMotorFailure_19) (or (and (< GateController_gate GateController_hundred) (= v_GateController_gate_22 (+ GateController_gate 1))) (and (= GateController_gate v_GateController_gate_22) (<= GateController_hundred GateController_gate))) (= v_GateController_alarmTrain_16 GateController_alarmTrain))) (or v_GateController_gateMotorFailure_19 (= GateController_gateMotorFailure v_GateController_gateMotorFailure_19)) (exists ((v_GateController_alarmTrain_15 Bool) (v_GateController_gateMotorFailure_18 Bool) (v_GateController_gate_21 Int)) (and (or (= v_GateController_gateMotorFailure_19 v_GateController_gateMotorFailure_18) v_GateController_gateMotorFailure_18) (or (and (or (and (= v_GateController_gate_22 v_GateController_gate_21) (<= GateController_hundred v_GateController_gate_22)) (and (= (+ v_GateController_gate_22 1) v_GateController_gate_21) (< v_GateController_gate_22 GateController_hundred))) (not v_GateController_gateMotorFailure_18) (= v_GateController_alarmTrain_16 v_GateController_alarmTrain_15)) (and v_GateController_alarmTrain_15 v_GateController_gateMotorFailure_18 (= v_GateController_gate_22 v_GateController_gate_21))) (not v_GateController_alarmTrain_15) (not (= GateController_hundred v_GateController_gate_21))))))))) && assume time < thousand;BeginParallelComposition{ParallelCodeBlock0: goto;ParallelCodeBlock1: gateMotorFailure := true;}EndParallelCompositionBeginParallelComposition{ParallelCodeBlock0: assume gateMotorFailure;alarmTrain := true;ParallelCodeBlock1: assume !gateMotorFailure;BeginParallelComposition{ParallelCodeBlock0: assume gate < hundred;gate := gate + 1;ParallelCodeBlock1: assume !(gate < hundred);}EndParallelComposition}EndParallelCompositionhavoc increment;assume increment < 10;time := time + increment; && 149#(and (exists ((v_GateController_time_15 Int)) (and (< v_GateController_time_15 GateController_thousand) (< v_GateController_time_15 (+ GateController_time 10)) (exists ((v_GateController_increment_4 Int)) (and (<= GateController_thousand (+ v_GateController_increment_4 v_GateController_time_15)) (< v_GateController_increment_4 10))))) (< GateController_time GateController_thousand) (exists ((v_GateController_gateMotorFailure_19 Bool) (v_GateController_alarmTrain_16 Bool) (v_GateController_gate_22 Int)) (and (or (and v_GateController_gateMotorFailure_19 (= GateController_gate v_GateController_gate_22) v_GateController_alarmTrain_16) (and (not v_GateController_gateMotorFailure_19) (or (and (< GateController_gate GateController_hundred) (= v_GateController_gate_22 (+ GateController_gate 1))) (and (= GateController_gate v_GateController_gate_22) (<= GateController_hundred GateController_gate))) (= v_GateController_alarmTrain_16 GateController_alarmTrain))) (or v_GateController_gateMotorFailure_19 (= GateController_gateMotorFailure v_GateController_gateMotorFailure_19)) (exists ((v_GateController_alarmTrain_15 Bool) (v_GateController_gateMotorFailure_18 Bool) (v_GateController_gate_21 Int)) (and (or (= v_GateController_gateMotorFailure_19 v_GateController_gateMotorFailure_18) v_GateController_gateMotorFailure_18) (or (and (or (and (= v_GateController_gate_22 v_GateController_gate_21) (<= GateController_hundred v_GateController_gate_22)) (and (= (+ v_GateController_gate_22 1) v_GateController_gate_21) (< v_GateController_gate_22 GateController_hundred))) (not v_GateController_gateMotorFailure_18) (= v_GateController_alarmTrain_16 v_GateController_alarmTrain_15)) (and v_GateController_alarmTrain_15 v_GateController_gateMotorFailure_18 (= v_GateController_gate_22 v_GateController_gate_21))) (not v_GateController_alarmTrain_15) (not (= GateController_hundred v_GateController_gate_21))))))) was unknown! [2018-07-25 13:40:04,111 WARN L513 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:40:04,113 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Solver returned unknown at de.uni_freiburg.informatik.ultimate.lib.pdr.Pdr.blockingPhase(Pdr.java:405) at de.uni_freiburg.informatik.ultimate.lib.pdr.Pdr.computePdr(Pdr.java:289) at de.uni_freiburg.informatik.ultimate.lib.pdr.Pdr.(Pdr.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructPdr(TraceCheckConstructor.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedRefinementStrategy.getTraceCheck(FixedRefinementStrategy.java:130) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:309) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:151) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:120) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-07-25 13:40:04,117 INFO L168 Benchmark]: Toolchain (without parser) took 5571.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 150.7 MB). Peak memory consumption was 150.7 MB. Max. memory is 7.1 GB. [2018-07-25 13:40:04,119 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:40:04,120 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.32 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:40:04,120 INFO L168 Benchmark]: Boogie Preprocessor took 23.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:40:04,121 INFO L168 Benchmark]: RCFGBuilder took 671.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-25 13:40:04,122 INFO L168 Benchmark]: TraceAbstraction took 4830.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. [2018-07-25 13:40:04,126 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 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 41.32 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 23.53 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 671.93 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. * TraceAbstraction took 4830.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Solver returned unknown de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Solver returned unknown: de.uni_freiburg.informatik.ultimate.lib.pdr.Pdr.blockingPhase(Pdr.java:405) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/RailwayCrossing.bpl_AutomizerBpl-pdr-z3.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-40-04-139.csv Received shutdown request...