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/real-life/MarkovChains/FourStateCircle.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:06:58,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:06:58,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:06:58,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:06:58,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:06:58,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:06:58,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:06:58,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:06:58,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:06:58,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:06:58,847 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:06:58,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:06:58,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:06:58,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:06:58,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:06:58,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:06:58,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:06:58,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:06:58,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:06:58,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:06:58,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:06:58,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:06:58,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:06:58,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:06:58,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:06:58,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:06:58,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:06:58,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:06:58,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:06:58,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:06:58,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:06:58,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:06:58,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:06:58,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:06:58,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:06:58,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:06:58,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:06:58,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:06:58,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:06:58,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:06:58,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:06:58,906 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:06:58,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:06:58,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:06:58,929 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:06:58,929 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:06:58,930 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/MarkovChains/FourStateCircle.bpl [2019-08-05 10:06:58,931 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/MarkovChains/FourStateCircle.bpl' [2019-08-05 10:06:58,970 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:06:58,972 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:06:58,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:06:58,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:06:58,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:06:58,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "FourStateCircle.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:58" (1/1) ... [2019-08-05 10:06:59,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "FourStateCircle.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:58" (1/1) ... [2019-08-05 10:06:59,007 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 10:06:59,007 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 10:06:59,007 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 10:06:59,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:06:59,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:06:59,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:06:59,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:06:59,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "FourStateCircle.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:58" (1/1) ... [2019-08-05 10:06:59,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "FourStateCircle.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:58" (1/1) ... [2019-08-05 10:06:59,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "FourStateCircle.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:58" (1/1) ... [2019-08-05 10:06:59,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "FourStateCircle.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:58" (1/1) ... [2019-08-05 10:06:59,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "FourStateCircle.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:58" (1/1) ... [2019-08-05 10:06:59,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "FourStateCircle.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:58" (1/1) ... [2019-08-05 10:06:59,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "FourStateCircle.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:58" (1/1) ... [2019-08-05 10:06:59,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:06:59,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:06:59,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:06:59,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:06:59,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "FourStateCircle.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-05 10:06:59,110 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-08-05 10:06:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-05 10:06:59,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-05 10:06:59,471 INFO L275 CfgBuilder]: Using library mode [2019-08-05 10:06:59,471 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-05 10:06:59,473 INFO L202 PluginConnector]: Adding new model FourStateCircle.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:06:59 BoogieIcfgContainer [2019-08-05 10:06:59,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:06:59,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:06:59,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:06:59,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:06:59,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "FourStateCircle.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:06:58" (1/2) ... [2019-08-05 10:06:59,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47445ef3 and model type FourStateCircle.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:06:59, skipping insertion in model container [2019-08-05 10:06:59,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "FourStateCircle.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:06:59" (2/2) ... [2019-08-05 10:06:59,498 INFO L109 eAbstractionObserver]: Analyzing ICFG FourStateCircle.bpl [2019-08-05 10:06:59,520 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:06:59,527 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-08-05 10:06:59,544 INFO L252 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-08-05 10:06:59,576 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:06:59,576 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:06:59,577 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:06:59,577 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:06:59,577 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:06:59,577 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:06:59,577 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:06:59,578 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:06:59,578 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:06:59,590 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-08-05 10:06:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 10:06:59,598 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:06:59,599 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 10:06:59,604 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:06:59,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:06:59,612 INFO L82 PathProgramCache]: Analyzing trace with hash 965, now seen corresponding path program 1 times [2019-08-05 10:06:59,659 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:06:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:06:59,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 7 conjunts are in the unsatisfiable core [2019-08-05 10:06:59,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:06:59,775 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 10:06:59,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:06:59,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 10:06:59,783 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:06:59,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:06:59,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:06:59,798 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2019-08-05 10:06:59,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:06:59,841 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-05 10:06:59,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:06:59,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 10:06:59,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:06:59,854 INFO L225 Difference]: With dead ends: 8 [2019-08-05 10:06:59,854 INFO L226 Difference]: Without dead ends: 8 [2019-08-05 10:06:59,856 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:06:59,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-05 10:06:59,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 6. [2019-08-05 10:06:59,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-08-05 10:06:59,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-08-05 10:06:59,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 2 [2019-08-05 10:06:59,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:06:59,890 INFO L475 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-08-05 10:06:59,891 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:06:59,891 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-08-05 10:06:59,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 10:06:59,892 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:06:59,892 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 10:06:59,892 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:06:59,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:06:59,893 INFO L82 PathProgramCache]: Analyzing trace with hash 29952, now seen corresponding path program 1 times [2019-08-05 10:06:59,894 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:06:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:06:59,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 7 conjunts are in the unsatisfiable core [2019-08-05 10:06:59,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:07:00,031 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2019-08-05 10:07:00,032 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 10:07:00,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:07:00,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 10:07:00,035 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:07:00,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:07:00,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:07:00,036 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 3 states. [2019-08-05 10:07:00,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:07:00,080 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-08-05 10:07:00,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:07:00,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-08-05 10:07:00,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:07:00,081 INFO L225 Difference]: With dead ends: 7 [2019-08-05 10:07:00,082 INFO L226 Difference]: Without dead ends: 7 [2019-08-05 10:07:00,083 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:07:00,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-08-05 10:07:00,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-08-05 10:07:00,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-05 10:07:00,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-05 10:07:00,086 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 3 [2019-08-05 10:07:00,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:07:00,086 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-05 10:07:00,087 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:07:00,087 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-05 10:07:00,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:07:00,087 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:07:00,088 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:07:00,088 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:07:00,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:07:00,089 INFO L82 PathProgramCache]: Analyzing trace with hash 928919, now seen corresponding path program 1 times [2019-08-05 10:07:00,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:07:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:07:00,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 8 conjunts are in the unsatisfiable core [2019-08-05 10:07:00,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:07:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:07:00,336 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:07:00,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2019-08-05 10:07:00,338 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:07:00,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:07:00,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:07:00,340 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2019-08-05 10:07:00,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:07:00,414 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-08-05 10:07:00,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:07:00,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 10:07:00,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:07:00,415 INFO L225 Difference]: With dead ends: 9 [2019-08-05 10:07:00,415 INFO L226 Difference]: Without dead ends: 9 [2019-08-05 10:07:00,416 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:07:00,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-08-05 10:07:00,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-08-05 10:07:00,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-08-05 10:07:00,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-08-05 10:07:00,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2019-08-05 10:07:00,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:07:00,421 INFO L475 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-08-05 10:07:00,421 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:07:00,421 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-08-05 10:07:00,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 10:07:00,422 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:07:00,422 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2019-08-05 10:07:00,422 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:07:00,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:07:00,423 INFO L82 PathProgramCache]: Analyzing trace with hash 28796526, now seen corresponding path program 1 times [2019-08-05 10:07:00,424 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:07:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:07:00,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 8 conjunts are in the unsatisfiable core [2019-08-05 10:07:00,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:07:00,639 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-08-05 10:07:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:07:00,641 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:07:00,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2019-08-05 10:07:00,642 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:07:00,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:07:00,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:07:00,643 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2019-08-05 10:07:00,836 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2019-08-05 10:07:00,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:07:00,857 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-08-05 10:07:00,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:07:00,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-08-05 10:07:00,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:07:00,859 INFO L225 Difference]: With dead ends: 11 [2019-08-05 10:07:00,859 INFO L226 Difference]: Without dead ends: 11 [2019-08-05 10:07:00,859 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:07:00,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-08-05 10:07:00,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-08-05 10:07:00,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-08-05 10:07:00,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-08-05 10:07:00,862 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 5 [2019-08-05 10:07:00,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:07:00,862 INFO L475 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-08-05 10:07:00,862 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:07:00,863 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-08-05 10:07:00,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:07:00,863 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:07:00,863 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1] [2019-08-05 10:07:00,864 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:07:00,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:07:00,864 INFO L82 PathProgramCache]: Analyzing trace with hash 892692713, now seen corresponding path program 2 times [2019-08-05 10:07:00,865 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:07:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:07:00,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2019-08-05 10:07:00,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:07:00,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-08-05 10:07:00,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:07:00,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:07:00,966 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:07:00,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:07:00,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:07:00,967 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2019-08-05 10:07:00,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:07:00,978 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-08-05 10:07:00,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:07:00,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-08-05 10:07:00,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:07:00,980 INFO L225 Difference]: With dead ends: 10 [2019-08-05 10:07:00,980 INFO L226 Difference]: Without dead ends: 10 [2019-08-05 10:07:00,981 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:07:00,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-08-05 10:07:00,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-08-05 10:07:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-08-05 10:07:00,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-08-05 10:07:00,984 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2019-08-05 10:07:00,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:07:00,984 INFO L475 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-08-05 10:07:00,984 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:07:00,985 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-08-05 10:07:00,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-08-05 10:07:00,985 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:07:00,986 INFO L399 BasicCegarLoop]: trace histogram [4, 3, 1, 1] [2019-08-05 10:07:00,986 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:07:00,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:07:00,987 INFO L82 PathProgramCache]: Analyzing trace with hash -228835638, now seen corresponding path program 2 times [2019-08-05 10:07:00,988 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:07:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:07:01,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-08-05 10:07:01,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:07:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-08-05 10:07:01,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:07:01,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 10:07:01,101 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:07:01,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:07:01,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:07:01,101 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2019-08-05 10:07:01,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:07:01,139 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-08-05 10:07:01,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:07:01,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-08-05 10:07:01,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:07:01,141 INFO L225 Difference]: With dead ends: 9 [2019-08-05 10:07:01,141 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:07:01,141 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 10:07:01,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:07:01,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:07:01,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:07:01,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:07:01,143 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-08-05 10:07:01,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:07:01,143 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:07:01,143 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:07:01,143 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:07:01,143 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:07:01,148 INFO L202 PluginConnector]: Adding new model FourStateCircle.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:07:01 BoogieIcfgContainer [2019-08-05 10:07:01,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:07:01,150 INFO L168 Benchmark]: Toolchain (without parser) took 2177.93 ms. Allocated memory was 130.5 MB in the beginning and 174.6 MB in the end (delta: 44.0 MB). Free memory was 108.1 MB in the beginning and 130.0 MB in the end (delta: -21.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:07:01,151 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 130.5 MB. Free memory was 109.3 MB in the beginning and 109.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-08-05 10:07:01,152 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.56 ms. Allocated memory is still 130.5 MB. Free memory was 108.1 MB in the beginning and 106.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-08-05 10:07:01,153 INFO L168 Benchmark]: Boogie Preprocessor took 28.40 ms. Allocated memory is still 130.5 MB. Free memory was 106.1 MB in the beginning and 104.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:07:01,154 INFO L168 Benchmark]: RCFGBuilder took 433.56 ms. Allocated memory is still 130.5 MB. Free memory was 104.9 MB in the beginning and 93.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-08-05 10:07:01,155 INFO L168 Benchmark]: TraceAbstraction took 1673.07 ms. Allocated memory was 130.5 MB in the beginning and 174.6 MB in the end (delta: 44.0 MB). Free memory was 93.1 MB in the beginning and 130.0 MB in the end (delta: -36.9 MB). Peak memory consumption was 7.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:07:01,160 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 0.22 ms. Allocated memory is still 130.5 MB. Free memory was 109.3 MB in the beginning and 109.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.56 ms. Allocated memory is still 130.5 MB. Free memory was 108.1 MB in the beginning and 106.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.40 ms. Allocated memory is still 130.5 MB. Free memory was 106.1 MB in the beginning and 104.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.56 ms. Allocated memory is still 130.5 MB. Free memory was 104.9 MB in the beginning and 93.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1673.07 ms. Allocated memory was 130.5 MB in the beginning and 174.6 MB in the end (delta: 44.0 MB). Free memory was 93.1 MB in the beginning and 130.0 MB in the end (delta: -36.9 MB). Peak memory consumption was 7.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 28]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 30]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 2 error locations. SAFE Result, 1.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 7 SDslu, 6 SDs, 0 SdLazy, 29 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=4, 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, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 593 SizeOfPredicates, 12 NumberOfNonLiveVariables, 131 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 15/19 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...