java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/programs/reals/nav04_phaver.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:30:35,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:30:35,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:30:35,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:30:35,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:30:35,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:30:35,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:30:35,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:30:35,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:30:35,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:30:35,880 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:30:35,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:30:35,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:30:35,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:30:35,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:30:35,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:30:35,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:30:35,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:30:35,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:30:35,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:30:35,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:30:35,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:30:35,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:30:35,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:30:35,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:30:35,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:30:35,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:30:35,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:30:35,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:30:35,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:30:35,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:30:35,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:30:35,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:30:35,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:30:35,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:30:35,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:30:35,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:30:35,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:30:35,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:30:35,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:30:35,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:30:35,933 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:30:35,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:30:35,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:30:35,954 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:30:35,955 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:30:35,956 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/reals/nav04_phaver.bpl [2019-08-05 10:30:35,956 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/reals/nav04_phaver.bpl' [2019-08-05 10:30:36,068 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:30:36,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:30:36,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:30:36,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:30:36,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:30:36,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nav04_phaver.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:36" (1/1) ... [2019-08-05 10:30:36,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nav04_phaver.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:36" (1/1) ... [2019-08-05 10:30:36,124 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 10:30:36,125 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 10:30:36,125 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 10:30:36,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:30:36,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:30:36,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:30:36,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:30:36,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nav04_phaver.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:36" (1/1) ... [2019-08-05 10:30:36,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nav04_phaver.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:36" (1/1) ... [2019-08-05 10:30:36,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nav04_phaver.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:36" (1/1) ... [2019-08-05 10:30:36,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nav04_phaver.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:36" (1/1) ... [2019-08-05 10:30:36,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nav04_phaver.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:36" (1/1) ... [2019-08-05 10:30:36,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nav04_phaver.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:36" (1/1) ... [2019-08-05 10:30:36,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nav04_phaver.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:36" (1/1) ... [2019-08-05 10:30:36,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:30:36,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:30:36,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:30:36,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:30:36,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nav04_phaver.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-05 10:30:36,280 INFO L124 BoogieDeclarations]: Specification and implementation of procedure nav01Example given in one single declaration [2019-08-05 10:30:36,280 INFO L130 BoogieDeclarations]: Found specification of procedure nav01Example [2019-08-05 10:30:36,280 INFO L138 BoogieDeclarations]: Found implementation of procedure nav01Example [2019-08-05 10:30:37,660 INFO L275 CfgBuilder]: Using library mode [2019-08-05 10:30:37,661 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 10:30:37,662 INFO L202 PluginConnector]: Adding new model nav04_phaver.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:30:37 BoogieIcfgContainer [2019-08-05 10:30:37,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:30:37,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:30:37,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:30:37,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:30:37,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nav04_phaver.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:36" (1/2) ... [2019-08-05 10:30:37,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dfa27ee and model type nav04_phaver.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:30:37, skipping insertion in model container [2019-08-05 10:30:37,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nav04_phaver.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:30:37" (2/2) ... [2019-08-05 10:30:37,673 INFO L109 eAbstractionObserver]: Analyzing ICFG nav04_phaver.bpl [2019-08-05 10:30:37,683 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:30:37,693 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:30:37,709 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:30:37,736 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:30:37,737 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:30:37,737 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:30:37,737 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:30:37,738 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:30:37,738 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:30:37,738 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:30:37,738 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:30:37,738 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:30:37,754 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-08-05 10:30:37,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:30:37,762 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:30:37,763 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:30:37,766 INFO L418 AbstractCegarLoop]: === Iteration 1 === [nav01ExampleErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:30:37,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:30:37,772 INFO L82 PathProgramCache]: Analyzing trace with hash 926043, now seen corresponding path program 1 times [2019-08-05 10:30:37,826 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:30:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:30:37,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2019-08-05 10:30:37,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:30:38,040 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-05 10:30:39,710 WARN L188 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 167 DAG size of output: 149 [2019-08-05 10:30:46,617 WARN L188 SmtUtils]: Spent 6.89 s on a formula simplification. DAG size of input: 818 DAG size of output: 307 [2019-08-05 10:30:48,481 WARN L188 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 573 DAG size of output: 145 [2019-08-05 10:30:48,731 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 45 [2019-08-05 10:30:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:30:48,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:30:48,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:30:48,873 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:30:48,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:30:48,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:30:48,890 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2019-08-05 10:30:49,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:30:49,389 INFO L93 Difference]: Finished difference Result 28 states and 55 transitions. [2019-08-05 10:30:49,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:30:49,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 10:30:49,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:30:49,405 INFO L225 Difference]: With dead ends: 28 [2019-08-05 10:30:49,406 INFO L226 Difference]: Without dead ends: 25 [2019-08-05 10:30:49,408 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:30:49,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-08-05 10:30:49,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2019-08-05 10:30:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-08-05 10:30:49,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 48 transitions. [2019-08-05 10:30:49,445 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 48 transitions. Word has length 4 [2019-08-05 10:30:49,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:30:49,445 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 48 transitions. [2019-08-05 10:30:49,445 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:30:49,446 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 48 transitions. [2019-08-05 10:30:49,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:30:49,447 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:30:49,447 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-08-05 10:30:49,447 INFO L418 AbstractCegarLoop]: === Iteration 2 === [nav01ExampleErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:30:49,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:30:49,449 INFO L82 PathProgramCache]: Analyzing trace with hash 889635376, now seen corresponding path program 1 times [2019-08-05 10:30:49,450 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:30:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:30:51,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2019-08-05 10:30:51,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:30:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:30:51,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:30:51,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:30:51,389 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:30:51,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:30:51,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:30:51,390 INFO L87 Difference]: Start difference. First operand 21 states and 48 transitions. Second operand 4 states. [2019-08-05 10:30:51,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:30:51,638 INFO L93 Difference]: Finished difference Result 27 states and 54 transitions. [2019-08-05 10:30:51,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:30:51,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-08-05 10:30:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:30:51,640 INFO L225 Difference]: With dead ends: 27 [2019-08-05 10:30:51,640 INFO L226 Difference]: Without dead ends: 24 [2019-08-05 10:30:51,641 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:30:51,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-08-05 10:30:51,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-08-05 10:30:51,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-08-05 10:30:51,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 46 transitions. [2019-08-05 10:30:51,646 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 46 transitions. Word has length 6 [2019-08-05 10:30:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:30:51,646 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 46 transitions. [2019-08-05 10:30:51,646 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:30:51,647 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 46 transitions. [2019-08-05 10:30:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:30:51,647 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:30:51,647 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-08-05 10:30:51,648 INFO L418 AbstractCegarLoop]: === Iteration 3 === [nav01ExampleErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:30:51,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:30:51,648 INFO L82 PathProgramCache]: Analyzing trace with hash 889778348, now seen corresponding path program 1 times [2019-08-05 10:30:51,649 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:30:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:30:51,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2019-08-05 10:30:51,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:30:52,194 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2019-08-05 10:30:53,639 WARN L188 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 259 DAG size of output: 165 [2019-08-05 10:30:57,397 WARN L188 SmtUtils]: Spent 3.75 s on a formula simplification. DAG size of input: 593 DAG size of output: 62 [2019-08-05 10:30:57,696 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 118 [2019-08-05 10:31:01,279 WARN L188 SmtUtils]: Spent 3.58 s on a formula simplification. DAG size of input: 488 DAG size of output: 232 [2019-08-05 10:31:02,796 WARN L188 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 576 DAG size of output: 45 [2019-08-05 10:31:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:31:02,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:31:02,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:31:02,882 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:31:02,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:31:02,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:31:02,882 INFO L87 Difference]: Start difference. First operand 21 states and 46 transitions. Second operand 4 states. [2019-08-05 10:31:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:31:03,102 INFO L93 Difference]: Finished difference Result 26 states and 50 transitions. [2019-08-05 10:31:03,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:31:03,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-08-05 10:31:03,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:31:03,104 INFO L225 Difference]: With dead ends: 26 [2019-08-05 10:31:03,104 INFO L226 Difference]: Without dead ends: 22 [2019-08-05 10:31:03,105 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:31:03,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-08-05 10:31:03,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2019-08-05 10:31:03,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-08-05 10:31:03,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 40 transitions. [2019-08-05 10:31:03,110 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 40 transitions. Word has length 6 [2019-08-05 10:31:03,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:31:03,110 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 40 transitions. [2019-08-05 10:31:03,110 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:31:03,111 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 40 transitions. [2019-08-05 10:31:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-05 10:31:03,111 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:31:03,112 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:31:03,112 INFO L418 AbstractCegarLoop]: === Iteration 4 === [nav01ExampleErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:31:03,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:31:03,112 INFO L82 PathProgramCache]: Analyzing trace with hash 240973437, now seen corresponding path program 1 times [2019-08-05 10:31:03,113 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:31:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:31:03,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2019-08-05 10:31:03,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:31:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:31:03,577 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:31:03,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:31:03,577 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:31:03,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:31:03,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:31:03,578 INFO L87 Difference]: Start difference. First operand 19 states and 40 transitions. Second operand 4 states. [2019-08-05 10:31:03,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:31:03,799 INFO L93 Difference]: Finished difference Result 25 states and 45 transitions. [2019-08-05 10:31:03,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:31:03,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-08-05 10:31:03,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:31:03,800 INFO L225 Difference]: With dead ends: 25 [2019-08-05 10:31:03,800 INFO L226 Difference]: Without dead ends: 24 [2019-08-05 10:31:03,801 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:31:03,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-08-05 10:31:03,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2019-08-05 10:31:03,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-08-05 10:31:03,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 39 transitions. [2019-08-05 10:31:03,806 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 39 transitions. Word has length 8 [2019-08-05 10:31:03,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:31:03,807 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 39 transitions. [2019-08-05 10:31:03,807 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:31:03,807 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 39 transitions. [2019-08-05 10:31:03,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-08-05 10:31:03,808 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:31:03,808 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:31:03,808 INFO L418 AbstractCegarLoop]: === Iteration 5 === [nav01ExampleErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:31:03,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:31:03,809 INFO L82 PathProgramCache]: Analyzing trace with hash -352989486, now seen corresponding path program 1 times [2019-08-05 10:31:03,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:31:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:31:04,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2019-08-05 10:31:04,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:31:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:31:04,057 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:31:04,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:31:04,058 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:31:04,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:31:04,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:31:04,059 INFO L87 Difference]: Start difference. First operand 19 states and 39 transitions. Second operand 4 states. [2019-08-05 10:31:04,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:31:04,241 INFO L93 Difference]: Finished difference Result 23 states and 42 transitions. [2019-08-05 10:31:04,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:31:04,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-08-05 10:31:04,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:31:04,243 INFO L225 Difference]: With dead ends: 23 [2019-08-05 10:31:04,243 INFO L226 Difference]: Without dead ends: 20 [2019-08-05 10:31:04,244 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:31:04,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-08-05 10:31:04,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2019-08-05 10:31:04,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-08-05 10:31:04,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 34 transitions. [2019-08-05 10:31:04,247 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 34 transitions. Word has length 10 [2019-08-05 10:31:04,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:31:04,247 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 34 transitions. [2019-08-05 10:31:04,247 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:31:04,248 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 34 transitions. [2019-08-05 10:31:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-08-05 10:31:04,248 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:31:04,248 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:31:04,249 INFO L418 AbstractCegarLoop]: === Iteration 6 === [nav01ExampleErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:31:04,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:31:04,249 INFO L82 PathProgramCache]: Analyzing trace with hash -352847506, now seen corresponding path program 1 times [2019-08-05 10:31:04,250 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:31:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:31:05,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2019-08-05 10:31:05,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:31:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:31:05,240 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:31:05,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:31:05,241 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:31:05,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:31:05,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:31:05,242 INFO L87 Difference]: Start difference. First operand 17 states and 34 transitions. Second operand 4 states. [2019-08-05 10:31:05,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:31:05,435 INFO L93 Difference]: Finished difference Result 21 states and 37 transitions. [2019-08-05 10:31:05,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:31:05,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-08-05 10:31:05,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:31:05,436 INFO L225 Difference]: With dead ends: 21 [2019-08-05 10:31:05,436 INFO L226 Difference]: Without dead ends: 20 [2019-08-05 10:31:05,437 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:31:05,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-08-05 10:31:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2019-08-05 10:31:05,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-08-05 10:31:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 33 transitions. [2019-08-05 10:31:05,441 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 33 transitions. Word has length 10 [2019-08-05 10:31:05,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:31:05,441 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 33 transitions. [2019-08-05 10:31:05,441 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:31:05,441 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 33 transitions. [2019-08-05 10:31:05,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-08-05 10:31:05,442 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:31:05,442 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:31:05,443 INFO L418 AbstractCegarLoop]: === Iteration 7 === [nav01ExampleErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:31:05,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:31:05,443 INFO L82 PathProgramCache]: Analyzing trace with hash 79451591, now seen corresponding path program 1 times [2019-08-05 10:31:05,444 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:31:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:31:09,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2019-08-05 10:31:09,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:31:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:31:09,925 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:31:09,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:31:09,926 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:31:09,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:31:09,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:31:09,927 INFO L87 Difference]: Start difference. First operand 17 states and 33 transitions. Second operand 4 states. [2019-08-05 10:31:10,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:31:10,130 INFO L93 Difference]: Finished difference Result 19 states and 35 transitions. [2019-08-05 10:31:10,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:31:10,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-08-05 10:31:10,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:31:10,132 INFO L225 Difference]: With dead ends: 19 [2019-08-05 10:31:10,132 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:31:10,133 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:31:10,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:31:10,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:31:10,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:31:10,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:31:10,134 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-08-05 10:31:10,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:31:10,134 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:31:10,134 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:31:10,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:31:10,135 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:31:10,139 INFO L202 PluginConnector]: Adding new model nav04_phaver.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:31:10 BoogieIcfgContainer [2019-08-05 10:31:10,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:31:10,141 INFO L168 Benchmark]: Toolchain (without parser) took 34071.43 ms. Allocated memory was 133.2 MB in the beginning and 487.1 MB in the end (delta: 353.9 MB). Free memory was 104.4 MB in the beginning and 90.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 367.9 MB. Max. memory is 7.1 GB. [2019-08-05 10:31:10,142 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 133.2 MB. Free memory was 112.0 MB in the beginning and 111.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-08-05 10:31:10,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.01 ms. Allocated memory is still 133.2 MB. Free memory was 104.4 MB in the beginning and 101.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-08-05 10:31:10,143 INFO L168 Benchmark]: Boogie Preprocessor took 77.30 ms. Allocated memory is still 133.2 MB. Free memory was 101.8 MB in the beginning and 96.9 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2019-08-05 10:31:10,145 INFO L168 Benchmark]: RCFGBuilder took 1457.01 ms. Allocated memory was 133.2 MB in the beginning and 171.4 MB in the end (delta: 38.3 MB). Free memory was 96.7 MB in the beginning and 132.3 MB in the end (delta: -35.6 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2019-08-05 10:31:10,145 INFO L168 Benchmark]: TraceAbstraction took 32475.30 ms. Allocated memory was 171.4 MB in the beginning and 487.1 MB in the end (delta: 315.6 MB). Free memory was 132.3 MB in the beginning and 90.5 MB in the end (delta: 41.8 MB). Peak memory consumption was 357.5 MB. Max. memory is 7.1 GB. [2019-08-05 10:31:10,149 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 133.2 MB. Free memory was 112.0 MB in the beginning and 111.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.01 ms. Allocated memory is still 133.2 MB. Free memory was 104.4 MB in the beginning and 101.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.30 ms. Allocated memory is still 133.2 MB. Free memory was 101.8 MB in the beginning and 96.9 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1457.01 ms. Allocated memory was 133.2 MB in the beginning and 171.4 MB in the end (delta: 38.3 MB). Free memory was 96.7 MB in the beginning and 132.3 MB in the end (delta: -35.6 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32475.30 ms. Allocated memory was 171.4 MB in the beginning and 487.1 MB in the end (delta: 315.6 MB). Free memory was 132.3 MB in the beginning and 90.5 MB in the end (delta: 41.8 MB). Peak memory consumption was 357.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1242]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. SAFE Result, 32.4s OverallTime, 7 OverallIterations, 1 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 130 SDtfs, 239 SDslu, 94 SDs, 0 SdLazy, 382 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, 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, 7 MinimizatonAttempts, 21 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 7.3s SatisfiabilityAnalysisTime, 22.9s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 2213 SizeOfPredicates, 34 NumberOfNonLiveVariables, 784 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...