java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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-ff8eab6 [2018-09-26 08:31:12,888 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 08:31:12,891 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 08:31:12,908 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 08:31:12,909 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 08:31:12,910 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 08:31:12,912 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 08:31:12,914 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 08:31:12,916 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 08:31:12,918 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 08:31:12,919 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-26 08:31:12,974 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf [2018-09-26 08:31:12,989 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 08:31:12,990 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 08:31:12,991 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 08:31:12,992 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-09-26 08:31:12,992 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 08:31:12,992 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 08:31:12,993 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 08:31:13,052 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 08:31:13,065 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 08:31:13,070 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 08:31:13,071 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 08:31:13,072 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 08:31:13,073 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/RailwayCrossing.bpl [2018-09-26 08:31:13,073 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/RailwayCrossing.bpl' [2018-09-26 08:31:13,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 08:31:13,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 08:31:13,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 08:31:13,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 08:31:13,125 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 08:31:13,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:31:13" (1/1) ... [2018-09-26 08:31:13,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:31:13" (1/1) ... [2018-09-26 08:31:13,162 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-26 08:31:13,162 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-26 08:31:13,162 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-26 08:31:13,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 08:31:13,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 08:31:13,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 08:31:13,166 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 08:31:13,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:31:13" (1/1) ... [2018-09-26 08:31:13,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:31:13" (1/1) ... [2018-09-26 08:31:13,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:31:13" (1/1) ... [2018-09-26 08:31:13,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:31:13" (1/1) ... [2018-09-26 08:31:13,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:31:13" (1/1) ... [2018-09-26 08:31:13,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:31:13" (1/1) ... [2018-09-26 08:31:13,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:31:13" (1/1) ... [2018-09-26 08:31:13,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 08:31:13,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 08:31:13,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 08:31:13,189 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 08:31:13,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:31:13" (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 [2018-09-26 08:31:13,247 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-09-26 08:31:13,247 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-09-26 08:31:13,247 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-09-26 08:31:13,830 INFO L343 CfgBuilder]: Using library mode [2018-09-26 08:31:13,833 INFO L202 PluginConnector]: Adding new model RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 08:31:13 BoogieIcfgContainer [2018-09-26 08:31:13,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 08:31:13,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 08:31:13,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 08:31:13,838 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 08:31:13,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:31:13" (1/2) ... [2018-09-26 08:31:13,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb1d9b and model type RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 08:31:13, skipping insertion in model container [2018-09-26 08:31:13,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 08:31:13" (2/2) ... [2018-09-26 08:31:13,842 INFO L112 eAbstractionObserver]: Analyzing ICFG RailwayCrossing.bpl [2018-09-26 08:31:13,852 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-09-26 08:31:13,860 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 08:31:13,908 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 08:31:13,909 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 08:31:13,909 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 08:31:13,909 INFO L383 AbstractCegarLoop]: Compute interpolants for PDR [2018-09-26 08:31:13,909 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 08:31:13,909 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 08:31:13,910 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 08:31:13,910 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 08:31:13,910 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 08:31:13,925 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-09-26 08:31:13,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-26 08:31:13,934 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:31:13,935 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-26 08:31:13,936 INFO L423 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:31:13,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:31:13,942 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 [2018-09-26 08:31:13,968 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:31:14,194 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 08:31:14,195 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 08:31:14,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 08:31:14,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 08:31:14,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-26 08:31:14,207 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 4 states. [2018-09-26 08:31:14,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:31:14,288 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2018-09-26 08:31:14,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-26 08:31:14,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2018-09-26 08:31:14,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:31:14,300 INFO L225 Difference]: With dead ends: 8 [2018-09-26 08:31:14,301 INFO L226 Difference]: Without dead ends: 5 [2018-09-26 08:31:14,304 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-26 08:31:14,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-09-26 08:31:14,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-09-26 08:31:14,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-09-26 08:31:14,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-09-26 08:31:14,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-09-26 08:31:14,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:31:14,335 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-09-26 08:31:14,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 08:31:14,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-09-26 08:31:14,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 08:31:14,336 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:31:14,336 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 08:31:14,337 INFO L423 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:31:14,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:31:14,337 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 [2018-09-26 08:31:14,345 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:31:15,144 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2018-09-26 08:31:15,938 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2018-09-26 08:31:18,577 ERROR L410 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! [2018-09-26 08:31:18,778 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 08:31:18,779 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:412) at de.uni_freiburg.informatik.ultimate.lib.pdr.Pdr.computePdr(Pdr.java:291) at de.uni_freiburg.informatik.ultimate.lib.pdr.Pdr.(Pdr.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructPdr(TraceCheckConstructor.java:274) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedRefinementStrategy.getTraceCheck(FixedRefinementStrategy.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:198) 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:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:313) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:124) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-09-26 08:31:18,784 INFO L168 Benchmark]: Toolchain (without parser) took 5665.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. [2018-09-26 08:31:18,786 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 08:31:18,787 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 08:31:18,787 INFO L168 Benchmark]: Boogie Preprocessor took 23.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 08:31:18,788 INFO L168 Benchmark]: RCFGBuilder took 644.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-26 08:31:18,789 INFO L168 Benchmark]: TraceAbstraction took 4949.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. [2018-09-26 08:31:18,795 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 644.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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 4949.26 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:412) 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-0-2018-09-26_08-31-18-814.csv Received shutdown request...