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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/programs/real-life/RailwayCrossing-Incorrenct.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b2fde6a [2018-09-28 09:55:28,713 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-28 09:55:28,715 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-28 09:55:28,728 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-28 09:55:28,728 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-28 09:55:28,729 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-28 09:55:28,731 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-28 09:55:28,732 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-28 09:55:28,734 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-28 09:55:28,735 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-28 09:55:28,736 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-28 09:55:28,736 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-28 09:55:28,737 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-28 09:55:28,738 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-28 09:55:28,740 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-28 09:55:28,741 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-28 09:55:28,742 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-28 09:55:28,749 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-28 09:55:28,751 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-28 09:55:28,755 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-28 09:55:28,756 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-28 09:55:28,760 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-28 09:55:28,765 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-28 09:55:28,766 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-28 09:55:28,766 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-28 09:55:28,769 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-28 09:55:28,770 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-28 09:55:28,770 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-28 09:55:28,771 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-28 09:55:28,775 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-28 09:55:28,775 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-28 09:55:28,776 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-28 09:55:28,776 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-28 09:55:28,777 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-28 09:55:28,778 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-28 09:55:28,779 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-28 09:55:28,779 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-28 09:55:28,807 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-28 09:55:28,807 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-28 09:55:28,808 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-28 09:55:28,808 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-28 09:55:28,809 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-28 09:55:28,809 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-28 09:55:28,809 INFO L133 SettingsManager]: * Use SBE=true [2018-09-28 09:55:28,809 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-28 09:55:28,810 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-28 09:55:28,810 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-28 09:55:28,810 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-28 09:55:28,810 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-28 09:55:28,810 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-28 09:55:28,811 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-28 09:55:28,811 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-28 09:55:28,811 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-28 09:55:28,812 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-28 09:55:28,813 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-28 09:55:28,813 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-28 09:55:28,813 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-28 09:55:28,813 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-28 09:55:28,813 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-28 09:55:28,813 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-28 09:55:28,814 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-28 09:55:28,814 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-28 09:55:28,814 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-28 09:55:28,814 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-28 09:55:28,814 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-28 09:55:28,814 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-28 09:55:28,817 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-28 09:55:28,888 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-28 09:55:28,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-28 09:55:28,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-28 09:55:28,905 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-28 09:55:28,905 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-28 09:55:28,906 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/RailwayCrossing-Incorrenct.bpl [2018-09-28 09:55:28,907 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/RailwayCrossing-Incorrenct.bpl' [2018-09-28 09:55:28,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-28 09:55:28,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-28 09:55:28,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-28 09:55:28,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-28 09:55:28,956 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-28 09:55:28,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 09:55:28" (1/1) ... [2018-09-28 09:55:28,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 09:55:28" (1/1) ... [2018-09-28 09:55:28,995 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-28 09:55:28,995 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-28 09:55:28,995 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-28 09:55:28,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-28 09:55:28,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-28 09:55:28,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-28 09:55:28,999 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-28 09:55:29,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 09:55:28" (1/1) ... [2018-09-28 09:55:29,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 09:55:28" (1/1) ... [2018-09-28 09:55:29,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 09:55:28" (1/1) ... [2018-09-28 09:55:29,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 09:55:28" (1/1) ... [2018-09-28 09:55:29,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 09:55:28" (1/1) ... [2018-09-28 09:55:29,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 09:55:28" (1/1) ... [2018-09-28 09:55:29,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 09:55:28" (1/1) ... [2018-09-28 09:55:29,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-28 09:55:29,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-28 09:55:29,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-28 09:55:29,023 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-28 09:55:29,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 09:55:28" (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:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-28 09:55:29,110 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-09-28 09:55:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-09-28 09:55:29,111 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-09-28 09:55:29,321 INFO L350 CfgBuilder]: Using library mode [2018-09-28 09:55:29,321 INFO L202 PluginConnector]: Adding new model RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 09:55:29 BoogieIcfgContainer [2018-09-28 09:55:29,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-28 09:55:29,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-28 09:55:29,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-28 09:55:29,326 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-28 09:55:29,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 09:55:28" (1/2) ... [2018-09-28 09:55:29,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce06e98 and model type RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.09 09:55:29, skipping insertion in model container [2018-09-28 09:55:29,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 09:55:29" (2/2) ... [2018-09-28 09:55:29,331 INFO L112 eAbstractionObserver]: Analyzing ICFG RailwayCrossing-Incorrenct.bpl [2018-09-28 09:55:29,340 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-28 09:55:29,348 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-28 09:55:29,394 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-28 09:55:29,395 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-28 09:55:29,395 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-28 09:55:29,395 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-28 09:55:29,395 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-28 09:55:29,395 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-28 09:55:29,396 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-28 09:55:29,396 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-28 09:55:29,396 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-28 09:55:29,412 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-09-28 09:55:29,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-28 09:55:29,419 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 09:55:29,420 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-28 09:55:29,421 INFO L423 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 09:55:29,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 09:55:29,428 INFO L82 PathProgramCache]: Analyzing trace with hash 30496, now seen corresponding path program 1 times [2018-09-28 09:55:29,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 09:55:29,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 09:55:29,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 09:55:29,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 09:55:29,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 09:55:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 09:55:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 09:55:29,578 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 09:55:29,579 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-28 09:55:29,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-28 09:55:29,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-28 09:55:29,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-28 09:55:29,612 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-09-28 09:55:29,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 09:55:29,737 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2018-09-28 09:55:29,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-28 09:55:29,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-28 09:55:29,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 09:55:29,751 INFO L225 Difference]: With dead ends: 19 [2018-09-28 09:55:29,752 INFO L226 Difference]: Without dead ends: 13 [2018-09-28 09:55:29,755 INFO L605 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 [2018-09-28 09:55:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-28 09:55:29,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-09-28 09:55:29,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-28 09:55:29,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2018-09-28 09:55:29,796 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 12 transitions. Word has length 3 [2018-09-28 09:55:29,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 09:55:29,796 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 12 transitions. [2018-09-28 09:55:29,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-28 09:55:29,796 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 12 transitions. [2018-09-28 09:55:29,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-28 09:55:29,796 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 09:55:29,797 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-28 09:55:29,797 INFO L423 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 09:55:29,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 09:55:29,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1863215691, now seen corresponding path program 1 times [2018-09-28 09:55:29,797 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 09:55:29,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 09:55:29,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 09:55:29,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 09:55:29,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 09:55:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 09:55:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 09:55:29,829 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 09:55:29,829 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-28 09:55:29,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-28 09:55:29,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-28 09:55:29,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-28 09:55:29,832 INFO L87 Difference]: Start difference. First operand 9 states and 12 transitions. Second operand 3 states. [2018-09-28 09:55:29,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 09:55:29,876 INFO L93 Difference]: Finished difference Result 16 states and 22 transitions. [2018-09-28 09:55:29,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-28 09:55:29,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-09-28 09:55:29,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 09:55:29,878 INFO L225 Difference]: With dead ends: 16 [2018-09-28 09:55:29,878 INFO L226 Difference]: Without dead ends: 9 [2018-09-28 09:55:29,880 INFO L605 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 [2018-09-28 09:55:29,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-28 09:55:29,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-28 09:55:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-28 09:55:29,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-09-28 09:55:29,883 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 7 [2018-09-28 09:55:29,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 09:55:29,883 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-09-28 09:55:29,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-28 09:55:29,883 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-09-28 09:55:29,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-28 09:55:29,884 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 09:55:29,884 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 09:55:29,884 INFO L423 AbstractCegarLoop]: === Iteration 3 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 09:55:29,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 09:55:29,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1926837521, now seen corresponding path program 1 times [2018-09-28 09:55:29,885 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 09:55:29,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 09:55:29,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 09:55:29,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 09:55:29,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 09:55:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 09:55:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 09:55:29,953 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 09:55:29,953 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-28 09:55:29,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 09:55:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 09:55:29,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 09:55:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 09:55:30,153 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 09:55:30,154 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2018-09-28 09:55:30,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-28 09:55:30,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-28 09:55:30,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-28 09:55:30,155 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 6 states. [2018-09-28 09:55:30,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 09:55:30,228 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2018-09-28 09:55:30,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-28 09:55:30,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-09-28 09:55:30,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 09:55:30,231 INFO L225 Difference]: With dead ends: 20 [2018-09-28 09:55:30,232 INFO L226 Difference]: Without dead ends: 18 [2018-09-28 09:55:30,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-28 09:55:30,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-28 09:55:30,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2018-09-28 09:55:30,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-28 09:55:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-09-28 09:55:30,237 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2018-09-28 09:55:30,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 09:55:30,238 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-09-28 09:55:30,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-28 09:55:30,238 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2018-09-28 09:55:30,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-28 09:55:30,239 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 09:55:30,239 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1] [2018-09-28 09:55:30,240 INFO L423 AbstractCegarLoop]: === Iteration 4 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 09:55:30,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 09:55:30,240 INFO L82 PathProgramCache]: Analyzing trace with hash 640583104, now seen corresponding path program 2 times [2018-09-28 09:55:30,240 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 09:55:30,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 09:55:30,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 09:55:30,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 09:55:30,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 09:55:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-28 09:55:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-28 09:55:30,280 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-09-28 09:55:30,307 INFO L202 PluginConnector]: Adding new model RailwayCrossing-Incorrenct.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.09 09:55:30 BoogieIcfgContainer [2018-09-28 09:55:30,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-28 09:55:30,308 INFO L168 Benchmark]: Toolchain (without parser) took 1355.08 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: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2018-09-28 09:55:30,311 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. [2018-09-28 09:55:30,311 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.93 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. [2018-09-28 09:55:30,312 INFO L168 Benchmark]: Boogie Preprocessor took 23.45 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. [2018-09-28 09:55:30,313 INFO L168 Benchmark]: RCFGBuilder took 299.52 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. [2018-09-28 09:55:30,315 INFO L168 Benchmark]: TraceAbstraction took 984.80 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: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2018-09-28 09:55:30,320 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 41.93 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 23.45 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 299.52 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 984.80 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: 44.9 MB). Peak memory consumption was 44.9 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 VAL [alarmTrain=false, gate=0, hundred=100, one=1, thousand=1000, time=0] [L27] COND FALSE !(gateMotorFailure) VAL [alarmTrain=false, gate=0, gateMotorFailure=false, hundred=100, one=1, thousand=1000, time=0] [L30] COND TRUE gate < hundred [L31] gate := gate + 1; VAL [alarmTrain=false, gate=1, gateMotorFailure=false, hundred=100, one=1, thousand=1000, time=0] [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 VAL [alarmTrain=false, gate=1, gateMotorFailure=false, hundred=100, increment=999, one=1, thousand=1000, time=999] [L27] COND FALSE !(gateMotorFailure) VAL [alarmTrain=false, gate=1, gateMotorFailure=false, hundred=100, increment=999, one=1, thousand=1000, time=999] [L30] COND TRUE gate < hundred [L31] gate := gate + 1; VAL [alarmTrain=false, gate=2, gateMotorFailure=false, hundred=100, increment=999, one=1, thousand=1000, time=999] [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, 0.9s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 42 SDslu, 29 SDs, 0 SdLazy, 15 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=3, 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, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 22 ConstructedInterpolants, 6 QuantifiedInterpolants, 860 SizeOfPredicates, 4 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/3 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_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-28_09-55-30-333.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/RailwayCrossing-Incorrenct.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-28_09-55-30-333.csv Received shutdown request...