java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/down.i_4.bplTransformedIcfg_BEv2_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:40:28,851 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:40:28,853 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:40:28,866 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:40:28,866 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:40:28,867 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:40:28,869 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:40:28,871 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:40:28,872 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:40:28,873 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:40:28,874 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-25 08:40:28,910 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:40:28,937 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:40:28,938 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:40:28,940 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:40:28,940 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:40:28,941 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:40:28,941 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:40:28,941 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:40:28,941 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:40:29,008 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:40:29,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:40:29,031 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:40:29,033 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:40:29,034 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:40:29,035 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/down.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-07-25 08:40:29,036 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/down.i_4.bplTransformedIcfg_BEv2_5.bpl' [2018-07-25 08:40:29,102 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:40:29,104 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:40:29,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:40:29,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:40:29,106 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:40:29,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:29" (1/1) ... [2018-07-25 08:40:29,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:29" (1/1) ... [2018-07-25 08:40:29,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:40:29,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:40:29,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:40:29,150 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:40:29,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:29" (1/1) ... [2018-07-25 08:40:29,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:29" (1/1) ... [2018-07-25 08:40:29,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:29" (1/1) ... [2018-07-25 08:40:29,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:29" (1/1) ... [2018-07-25 08:40:29,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:29" (1/1) ... [2018-07-25 08:40:29,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:29" (1/1) ... [2018-07-25 08:40:29,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:29" (1/1) ... [2018-07-25 08:40:29,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:40:29,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:40:29,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:40:29,172 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:40:29,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:29" (1/1) ... [2018-07-25 08:40:29,268 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-07-25 08:40:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:40:29,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:40:29,477 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:40:29,478 INFO L202 PluginConnector]: Adding new model down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:40:29 BoogieIcfgContainer [2018-07-25 08:40:29,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:40:29,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:40:29,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:40:29,483 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:40:29,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:29" (1/2) ... [2018-07-25 08:40:29,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62bc98f3 and model type down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:40:29, skipping insertion in model container [2018-07-25 08:40:29,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:40:29" (2/2) ... [2018-07-25 08:40:29,487 INFO L112 eAbstractionObserver]: Analyzing ICFG down.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-07-25 08:40:29,498 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:40:29,507 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:40:29,550 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:40:29,551 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:40:29,552 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:40:29,552 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:40:29,552 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:40:29,552 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:40:29,552 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:40:29,553 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:40:29,553 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:40:29,568 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-07-25 08:40:29,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 08:40:29,577 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:29,578 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-07-25 08:40:29,579 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:29,585 INFO L82 PathProgramCache]: Analyzing trace with hash 28868155, now seen corresponding path program 1 times [2018-07-25 08:40:29,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:29,673 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:40:29,674 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 08:40:29,677 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:40:29,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:40:29,691 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:40:29,694 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2018-07-25 08:40:29,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:29,741 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2018-07-25 08:40:29,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:40:29,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-07-25 08:40:29,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:29,758 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:40:29,759 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:40:29,762 INFO L574 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 [2018-07-25 08:40:29,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:40:29,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 08:40:29,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:40:29,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-07-25 08:40:29,804 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2018-07-25 08:40:29,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:29,805 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-07-25 08:40:29,805 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:40:29,806 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2018-07-25 08:40:29,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:40:29,806 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:29,807 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-25 08:40:29,807 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:29,808 INFO L82 PathProgramCache]: Analyzing trace with hash 892360290, now seen corresponding path program 1 times [2018-07-25 08:40:29,808 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:29,850 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:40:29,850 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 08:40:29,854 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:40:29,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:40:29,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:40:29,855 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand 5 states. [2018-07-25 08:40:29,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:29,900 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2018-07-25 08:40:29,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:40:29,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-07-25 08:40:29,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:29,901 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:40:29,902 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:40:29,903 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:40:29,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:40:29,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-07-25 08:40:29,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:40:29,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 08:40:29,908 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-07-25 08:40:29,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:29,908 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 08:40:29,908 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:40:29,908 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 08:40:29,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:40:29,909 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:29,909 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 08:40:29,910 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:29,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1435154486, now seen corresponding path program 1 times [2018-07-25 08:40:29,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:29,950 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:29,950 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:40:29,951 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:40:29,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:40:29,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:40:29,955 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 6 states. [2018-07-25 08:40:30,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,037 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2018-07-25 08:40:30,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:40:30,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-07-25 08:40:30,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,038 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:40:30,042 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 08:40:30,042 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:40:30,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 08:40:30,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-25 08:40:30,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 08:40:30,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2018-07-25 08:40:30,046 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2018-07-25 08:40:30,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,047 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2018-07-25 08:40:30,047 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:40:30,047 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2018-07-25 08:40:30,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 08:40:30,053 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,053 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2018-07-25 08:40:30,053 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,054 INFO L82 PathProgramCache]: Analyzing trace with hash 299903555, now seen corresponding path program 2 times [2018-07-25 08:40:30,054 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:30,129 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:30,129 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:40:30,129 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:40:30,130 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:40:30,130 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:40:30,134 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 6 states. [2018-07-25 08:40:30,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,200 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2018-07-25 08:40:30,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:40:30,201 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-07-25 08:40:30,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,201 INFO L225 Difference]: With dead ends: 18 [2018-07-25 08:40:30,201 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 08:40:30,202 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:40:30,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 08:40:30,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2018-07-25 08:40:30,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 08:40:30,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-07-25 08:40:30,207 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2018-07-25 08:40:30,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,208 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2018-07-25 08:40:30,208 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:40:30,208 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2018-07-25 08:40:30,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 08:40:30,209 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,209 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2018-07-25 08:40:30,209 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,210 INFO L82 PathProgramCache]: Analyzing trace with hash 444573547, now seen corresponding path program 3 times [2018-07-25 08:40:30,210 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:30,253 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:30,254 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:40:30,254 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:40:30,254 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:40:30,254 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:40:30,255 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 8 states. [2018-07-25 08:40:30,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,302 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2018-07-25 08:40:30,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:40:30,302 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2018-07-25 08:40:30,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,303 INFO L225 Difference]: With dead ends: 22 [2018-07-25 08:40:30,303 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:40:30,305 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:40:30,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:40:30,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:40:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:40:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-25 08:40:30,311 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2018-07-25 08:40:30,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,311 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-25 08:40:30,311 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:40:30,312 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-25 08:40:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:40:30,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,312 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2018-07-25 08:40:30,313 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,313 INFO L82 PathProgramCache]: Analyzing trace with hash -372734382, now seen corresponding path program 4 times [2018-07-25 08:40:30,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:30,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:30,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:40:30,378 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:40:30,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:40:30,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:40:30,380 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-07-25 08:40:30,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,431 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-07-25 08:40:30,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:40:30,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-25 08:40:30,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,432 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:40:30,432 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:40:30,433 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:40:30,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:40:30,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-07-25 08:40:30,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:40:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-07-25 08:40:30,439 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2018-07-25 08:40:30,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,439 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-07-25 08:40:30,440 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:40:30,440 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-07-25 08:40:30,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:40:30,441 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,441 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2018-07-25 08:40:30,441 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1715389510, now seen corresponding path program 5 times [2018-07-25 08:40:30,442 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:30,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:30,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:40:30,503 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:40:30,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:40:30,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:40:30,509 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 10 states. [2018-07-25 08:40:30,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,571 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-07-25 08:40:30,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:40:30,571 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2018-07-25 08:40:30,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,572 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:40:30,572 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 08:40:30,573 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:40:30,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 08:40:30,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-25 08:40:30,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 08:40:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-07-25 08:40:30,579 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2018-07-25 08:40:30,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,579 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-07-25 08:40:30,579 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:40:30,579 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-07-25 08:40:30,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 08:40:30,580 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,580 INFO L354 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1] [2018-07-25 08:40:30,581 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1966301325, now seen corresponding path program 6 times [2018-07-25 08:40:30,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,618 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:30,618 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:30,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:40:30,619 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:40:30,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:40:30,620 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:40:30,620 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 8 states. [2018-07-25 08:40:30,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,681 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-07-25 08:40:30,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:40:30,682 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-07-25 08:40:30,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,683 INFO L225 Difference]: With dead ends: 24 [2018-07-25 08:40:30,683 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 08:40:30,684 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:40:30,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 08:40:30,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2018-07-25 08:40:30,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 08:40:30,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-07-25 08:40:30,689 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2018-07-25 08:40:30,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,690 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-07-25 08:40:30,690 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:40:30,690 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-07-25 08:40:30,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 08:40:30,691 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,691 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2018-07-25 08:40:30,692 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,692 INFO L82 PathProgramCache]: Analyzing trace with hash 170102939, now seen corresponding path program 7 times [2018-07-25 08:40:30,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:30,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:30,738 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:40:30,738 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:40:30,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:40:30,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:40:30,739 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 12 states. [2018-07-25 08:40:30,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,810 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-07-25 08:40:30,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:40:30,810 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2018-07-25 08:40:30,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,813 INFO L225 Difference]: With dead ends: 32 [2018-07-25 08:40:30,813 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:40:30,815 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:40:30,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:40:30,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:40:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:40:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-07-25 08:40:30,826 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2018-07-25 08:40:30,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,828 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-07-25 08:40:30,829 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:40:30,829 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-07-25 08:40:30,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:40:30,830 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,830 INFO L354 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2018-07-25 08:40:30,830 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1500682686, now seen corresponding path program 8 times [2018-07-25 08:40:30,831 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,900 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:30,900 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:30,900 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:40:30,901 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:40:30,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:40:30,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:40:30,904 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 9 states. [2018-07-25 08:40:30,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,964 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-07-25 08:40:30,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:40:30,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-25 08:40:30,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,966 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:40:30,966 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:40:30,967 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:40:30,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:40:30,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2018-07-25 08:40:30,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:40:30,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-07-25 08:40:30,979 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2018-07-25 08:40:30,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,979 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-07-25 08:40:30,980 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:40:30,980 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-07-25 08:40:30,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:40:30,981 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,981 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1] [2018-07-25 08:40:30,981 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,982 INFO L82 PathProgramCache]: Analyzing trace with hash 953016234, now seen corresponding path program 9 times [2018-07-25 08:40:30,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,042 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:31,042 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,042 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:40:31,043 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:40:31,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:40:31,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:40:31,044 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 14 states. [2018-07-25 08:40:31,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,121 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2018-07-25 08:40:31,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:40:31,121 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2018-07-25 08:40:31,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,126 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:40:31,126 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 08:40:31,127 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:40:31,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 08:40:31,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-25 08:40:31,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 08:40:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-07-25 08:40:31,138 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2018-07-25 08:40:31,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,138 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-07-25 08:40:31,138 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:40:31,138 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-07-25 08:40:31,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 08:40:31,139 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,139 INFO L354 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1] [2018-07-25 08:40:31,140 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,140 INFO L82 PathProgramCache]: Analyzing trace with hash 954455203, now seen corresponding path program 10 times [2018-07-25 08:40:31,140 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:31,186 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,186 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:40:31,187 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:40:31,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:40:31,187 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:40:31,188 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 10 states. [2018-07-25 08:40:31,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,247 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-07-25 08:40:31,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:40:31,247 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2018-07-25 08:40:31,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,248 INFO L225 Difference]: With dead ends: 30 [2018-07-25 08:40:31,248 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 08:40:31,249 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:40:31,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 08:40:31,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-07-25 08:40:31,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 08:40:31,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-07-25 08:40:31,255 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 21 [2018-07-25 08:40:31,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,256 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-07-25 08:40:31,256 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:40:31,256 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-07-25 08:40:31,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-25 08:40:31,257 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,257 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2018-07-25 08:40:31,257 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1891485237, now seen corresponding path program 11 times [2018-07-25 08:40:31,258 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,305 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 42 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:31,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:40:31,306 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:40:31,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:40:31,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:40:31,307 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 16 states. [2018-07-25 08:40:31,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,371 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-07-25 08:40:31,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:40:31,372 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 23 [2018-07-25 08:40:31,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,372 INFO L225 Difference]: With dead ends: 42 [2018-07-25 08:40:31,373 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:40:31,374 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:40:31,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:40:31,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:40:31,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:40:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-07-25 08:40:31,380 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 23 [2018-07-25 08:40:31,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,380 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-07-25 08:40:31,380 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:40:31,380 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-07-25 08:40:31,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:40:31,381 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,381 INFO L354 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1] [2018-07-25 08:40:31,382 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1972832718, now seen corresponding path program 12 times [2018-07-25 08:40:31,382 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,424 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:31,424 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,424 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:40:31,425 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:40:31,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:40:31,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:40:31,426 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 11 states. [2018-07-25 08:40:31,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,477 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-07-25 08:40:31,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:40:31,477 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2018-07-25 08:40:31,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,478 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:40:31,478 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:40:31,479 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:40:31,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:40:31,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2018-07-25 08:40:31,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:40:31,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-07-25 08:40:31,486 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2018-07-25 08:40:31,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,486 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-07-25 08:40:31,486 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:40:31,487 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-07-25 08:40:31,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:40:31,487 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,488 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1] [2018-07-25 08:40:31,488 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1811598438, now seen corresponding path program 13 times [2018-07-25 08:40:31,488 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 56 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:31,544 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,544 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:40:31,545 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:40:31,545 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:40:31,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:40:31,546 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 18 states. [2018-07-25 08:40:31,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,625 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2018-07-25 08:40:31,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:40:31,625 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2018-07-25 08:40:31,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,626 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:40:31,626 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 08:40:31,627 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:40:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 08:40:31,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-25 08:40:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 08:40:31,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-07-25 08:40:31,634 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2018-07-25 08:40:31,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,634 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-07-25 08:40:31,635 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:40:31,635 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-07-25 08:40:31,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-25 08:40:31,636 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,636 INFO L354 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1] [2018-07-25 08:40:31,636 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1422117331, now seen corresponding path program 14 times [2018-07-25 08:40:31,637 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 36 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:31,683 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:40:31,684 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:40:31,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:40:31,685 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:40:31,685 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 12 states. [2018-07-25 08:40:31,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,750 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-07-25 08:40:31,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:40:31,751 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2018-07-25 08:40:31,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,752 INFO L225 Difference]: With dead ends: 36 [2018-07-25 08:40:31,752 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 08:40:31,753 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:40:31,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 08:40:31,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2018-07-25 08:40:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-25 08:40:31,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2018-07-25 08:40:31,759 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2018-07-25 08:40:31,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,760 INFO L472 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2018-07-25 08:40:31,760 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:40:31,760 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2018-07-25 08:40:31,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:40:31,761 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,761 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1] [2018-07-25 08:40:31,762 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,762 INFO L82 PathProgramCache]: Analyzing trace with hash 855220987, now seen corresponding path program 15 times [2018-07-25 08:40:31,762 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 72 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:31,829 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,829 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:40:31,829 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:40:31,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:40:31,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:40:31,830 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 20 states. [2018-07-25 08:40:31,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,922 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2018-07-25 08:40:31,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:40:31,922 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 29 [2018-07-25 08:40:31,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,923 INFO L225 Difference]: With dead ends: 52 [2018-07-25 08:40:31,923 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:40:31,924 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:40:31,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:40:31,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:40:31,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:40:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-07-25 08:40:31,931 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 29 [2018-07-25 08:40:31,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,932 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-07-25 08:40:31,932 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:40:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-07-25 08:40:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:40:31,933 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,933 INFO L354 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1] [2018-07-25 08:40:31,933 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,934 INFO L82 PathProgramCache]: Analyzing trace with hash 365245986, now seen corresponding path program 16 times [2018-07-25 08:40:31,934 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,988 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 45 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:31,988 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,989 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:40:31,989 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:40:31,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:40:31,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:40:31,990 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 13 states. [2018-07-25 08:40:32,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,050 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2018-07-25 08:40:32,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:40:32,050 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2018-07-25 08:40:32,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,051 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:40:32,051 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:40:32,052 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:40:32,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:40:32,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2018-07-25 08:40:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:40:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-07-25 08:40:32,059 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30 [2018-07-25 08:40:32,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,060 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-07-25 08:40:32,060 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:40:32,060 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-07-25 08:40:32,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:40:32,062 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,062 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1] [2018-07-25 08:40:32,063 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1185859702, now seen corresponding path program 17 times [2018-07-25 08:40:32,063 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 90 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:32,140 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,140 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:40:32,141 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:40:32,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:40:32,142 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:40:32,142 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 22 states. [2018-07-25 08:40:32,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,246 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-07-25 08:40:32,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:40:32,247 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 32 [2018-07-25 08:40:32,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,247 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:40:32,247 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 08:40:32,249 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=261, Invalid=731, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:40:32,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 08:40:32,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-25 08:40:32,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 08:40:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-07-25 08:40:32,256 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 32 [2018-07-25 08:40:32,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,256 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-07-25 08:40:32,258 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:40:32,258 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-07-25 08:40:32,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-25 08:40:32,259 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,259 INFO L354 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1] [2018-07-25 08:40:32,261 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,262 INFO L82 PathProgramCache]: Analyzing trace with hash 562724611, now seen corresponding path program 18 times [2018-07-25 08:40:32,262 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 55 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:32,331 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,331 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:40:32,331 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:40:32,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:40:32,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:40:32,332 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 14 states. [2018-07-25 08:40:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,404 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2018-07-25 08:40:32,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:40:32,405 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2018-07-25 08:40:32,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,405 INFO L225 Difference]: With dead ends: 42 [2018-07-25 08:40:32,405 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 08:40:32,406 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:40:32,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 08:40:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2018-07-25 08:40:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-25 08:40:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2018-07-25 08:40:32,414 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 33 [2018-07-25 08:40:32,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,415 INFO L472 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2018-07-25 08:40:32,415 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:40:32,415 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2018-07-25 08:40:32,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 08:40:32,416 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,416 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1] [2018-07-25 08:40:32,416 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,417 INFO L82 PathProgramCache]: Analyzing trace with hash -387462101, now seen corresponding path program 19 times [2018-07-25 08:40:32,417 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 110 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:32,527 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,527 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:40:32,527 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:40:32,528 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:40:32,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:40:32,528 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 24 states. [2018-07-25 08:40:32,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,655 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-07-25 08:40:32,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:40:32,656 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 35 [2018-07-25 08:40:32,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,657 INFO L225 Difference]: With dead ends: 62 [2018-07-25 08:40:32,657 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:40:32,658 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=309, Invalid=881, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:40:32,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:40:32,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:40:32,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:40:32,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-07-25 08:40:32,670 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 35 [2018-07-25 08:40:32,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,670 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-07-25 08:40:32,670 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:40:32,670 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-07-25 08:40:32,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:40:32,671 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,672 INFO L354 BasicCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1, 1] [2018-07-25 08:40:32,672 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1970526702, now seen corresponding path program 20 times [2018-07-25 08:40:32,673 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 66 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:32,743 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,744 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:40:32,744 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:40:32,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:40:32,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:40:32,745 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 15 states. [2018-07-25 08:40:32,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,817 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2018-07-25 08:40:32,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:40:32,817 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2018-07-25 08:40:32,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,823 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:40:32,823 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:40:32,826 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:40:32,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:40:32,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-07-25 08:40:32,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:40:32,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-07-25 08:40:32,840 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2018-07-25 08:40:32,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,841 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-07-25 08:40:32,841 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:40:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-07-25 08:40:32,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:40:32,842 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,842 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 11, 1, 1, 1, 1] [2018-07-25 08:40:32,842 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,845 INFO L82 PathProgramCache]: Analyzing trace with hash 404482938, now seen corresponding path program 21 times [2018-07-25 08:40:32,846 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,948 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 132 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:32,949 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,949 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:40:32,950 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:40:32,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:40:32,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:40:32,951 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 26 states. [2018-07-25 08:40:33,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:33,097 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2018-07-25 08:40:33,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:40:33,098 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 38 [2018-07-25 08:40:33,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:33,098 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:40:33,099 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 08:40:33,100 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=361, Invalid=1045, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:40:33,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 08:40:33,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-25 08:40:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-25 08:40:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2018-07-25 08:40:33,116 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 38 [2018-07-25 08:40:33,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,117 INFO L472 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2018-07-25 08:40:33,117 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:40:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2018-07-25 08:40:33,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-25 08:40:33,118 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,118 INFO L354 BasicCegarLoop]: trace histogram [12, 12, 11, 1, 1, 1, 1] [2018-07-25 08:40:33,118 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1932135373, now seen corresponding path program 22 times [2018-07-25 08:40:33,119 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 78 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:33,226 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:33,226 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:40:33,227 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:40:33,227 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:40:33,227 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:40:33,228 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 16 states. [2018-07-25 08:40:33,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:33,312 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2018-07-25 08:40:33,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:40:33,312 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2018-07-25 08:40:33,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:33,313 INFO L225 Difference]: With dead ends: 48 [2018-07-25 08:40:33,313 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 08:40:33,314 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:40:33,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 08:40:33,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2018-07-25 08:40:33,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-25 08:40:33,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2018-07-25 08:40:33,326 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 39 [2018-07-25 08:40:33,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,326 INFO L472 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2018-07-25 08:40:33,326 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:40:33,326 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2018-07-25 08:40:33,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-25 08:40:33,327 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,327 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1] [2018-07-25 08:40:33,327 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1356155557, now seen corresponding path program 23 times [2018-07-25 08:40:33,328 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 156 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:33,448 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:33,448 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:40:33,448 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:40:33,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:40:33,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:40:33,450 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 28 states. [2018-07-25 08:40:33,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:33,617 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2018-07-25 08:40:33,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:40:33,617 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 41 [2018-07-25 08:40:33,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:33,618 INFO L225 Difference]: With dead ends: 72 [2018-07-25 08:40:33,618 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:40:33,620 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=417, Invalid=1223, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:40:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:40:33,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:40:33,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:40:33,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-07-25 08:40:33,634 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 41 [2018-07-25 08:40:33,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,635 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-07-25 08:40:33,635 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:40:33,635 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-07-25 08:40:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:40:33,637 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,638 INFO L354 BasicCegarLoop]: trace histogram [13, 13, 12, 1, 1, 1, 1] [2018-07-25 08:40:33,638 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1277675010, now seen corresponding path program 24 times [2018-07-25 08:40:33,638 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 91 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:33,733 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:33,733 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:40:33,733 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:40:33,734 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:40:33,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:40:33,735 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 17 states. [2018-07-25 08:40:33,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:33,855 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2018-07-25 08:40:33,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:40:33,856 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2018-07-25 08:40:33,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:33,861 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:40:33,861 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:40:33,862 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:40:33,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:40:33,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2018-07-25 08:40:33,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:40:33,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-07-25 08:40:33,894 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 42 [2018-07-25 08:40:33,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,898 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-07-25 08:40:33,898 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:40:33,899 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-07-25 08:40:33,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:40:33,900 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,900 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 13, 1, 1, 1, 1] [2018-07-25 08:40:33,900 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,900 INFO L82 PathProgramCache]: Analyzing trace with hash -514896022, now seen corresponding path program 25 times [2018-07-25 08:40:33,901 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:34,013 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 182 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:34,014 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:34,014 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:40:34,014 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:40:34,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:40:34,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:40:34,016 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 30 states. [2018-07-25 08:40:34,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:34,176 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2018-07-25 08:40:34,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:40:34,177 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 44 [2018-07-25 08:40:34,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:34,177 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:40:34,177 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 08:40:34,180 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=477, Invalid=1415, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:40:34,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 08:40:34,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-25 08:40:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-25 08:40:34,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2018-07-25 08:40:34,188 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 44 [2018-07-25 08:40:34,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:34,188 INFO L472 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2018-07-25 08:40:34,188 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:40:34,188 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2018-07-25 08:40:34,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-25 08:40:34,189 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:34,189 INFO L354 BasicCegarLoop]: trace histogram [14, 14, 13, 1, 1, 1, 1] [2018-07-25 08:40:34,189 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:34,189 INFO L82 PathProgramCache]: Analyzing trace with hash -826005149, now seen corresponding path program 26 times [2018-07-25 08:40:34,189 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:34,258 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 105 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:34,258 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:34,258 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:40:34,259 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:40:34,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:40:34,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:40:34,260 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 18 states. [2018-07-25 08:40:34,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:34,337 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2018-07-25 08:40:34,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:40:34,337 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2018-07-25 08:40:34,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:34,338 INFO L225 Difference]: With dead ends: 54 [2018-07-25 08:40:34,338 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 08:40:34,339 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:40:34,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 08:40:34,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2018-07-25 08:40:34,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 08:40:34,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2018-07-25 08:40:34,352 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 45 [2018-07-25 08:40:34,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:34,352 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2018-07-25 08:40:34,352 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:40:34,353 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2018-07-25 08:40:34,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-25 08:40:34,353 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:34,353 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1] [2018-07-25 08:40:34,353 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:34,354 INFO L82 PathProgramCache]: Analyzing trace with hash 778067595, now seen corresponding path program 27 times [2018-07-25 08:40:34,354 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 210 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:34,474 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:34,474 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:40:34,474 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:40:34,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:40:34,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:40:34,476 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 32 states. [2018-07-25 08:40:34,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:34,640 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2018-07-25 08:40:34,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:40:34,641 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 47 [2018-07-25 08:40:34,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:34,641 INFO L225 Difference]: With dead ends: 82 [2018-07-25 08:40:34,641 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:40:34,643 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=541, Invalid=1621, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:40:34,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:40:34,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:40:34,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:40:34,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-07-25 08:40:34,653 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 47 [2018-07-25 08:40:34,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:34,653 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-07-25 08:40:34,654 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:40:34,654 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-07-25 08:40:34,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:40:34,654 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:34,654 INFO L354 BasicCegarLoop]: trace histogram [15, 15, 14, 1, 1, 1, 1] [2018-07-25 08:40:34,655 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:34,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1065489906, now seen corresponding path program 28 times [2018-07-25 08:40:34,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:34,730 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 120 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:34,730 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:34,730 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:40:34,731 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:40:34,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:40:34,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:40:34,732 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 19 states. [2018-07-25 08:40:34,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:34,817 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-07-25 08:40:34,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:40:34,817 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2018-07-25 08:40:34,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:34,818 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:40:34,818 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:40:34,819 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:40:34,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:40:34,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2018-07-25 08:40:34,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:40:34,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-07-25 08:40:34,828 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-07-25 08:40:34,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:34,828 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-07-25 08:40:34,828 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:40:34,828 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-07-25 08:40:34,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:40:34,829 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:34,829 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 15, 1, 1, 1, 1] [2018-07-25 08:40:34,829 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:34,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1733649242, now seen corresponding path program 29 times [2018-07-25 08:40:34,830 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 240 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:34,940 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:34,941 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:40:34,941 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:40:34,941 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:40:34,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:40:34,942 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 34 states. [2018-07-25 08:40:35,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:35,121 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2018-07-25 08:40:35,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:40:35,121 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 50 [2018-07-25 08:40:35,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:35,122 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:40:35,122 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 08:40:35,123 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=609, Invalid=1841, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:40:35,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 08:40:35,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-25 08:40:35,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-25 08:40:35,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2018-07-25 08:40:35,131 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 50 [2018-07-25 08:40:35,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:35,131 INFO L472 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2018-07-25 08:40:35,131 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:40:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2018-07-25 08:40:35,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 08:40:35,132 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:35,132 INFO L354 BasicCegarLoop]: trace histogram [16, 16, 15, 1, 1, 1, 1] [2018-07-25 08:40:35,133 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:35,133 INFO L82 PathProgramCache]: Analyzing trace with hash 166928019, now seen corresponding path program 30 times [2018-07-25 08:40:35,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:35,214 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 136 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:35,214 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:35,215 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:40:35,215 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:40:35,215 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:40:35,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:40:35,216 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 20 states. [2018-07-25 08:40:35,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:35,299 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2018-07-25 08:40:35,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:40:35,299 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2018-07-25 08:40:35,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:35,300 INFO L225 Difference]: With dead ends: 60 [2018-07-25 08:40:35,300 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 08:40:35,301 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:40:35,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 08:40:35,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-07-25 08:40:35,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-25 08:40:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2018-07-25 08:40:35,310 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 51 [2018-07-25 08:40:35,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:35,310 INFO L472 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2018-07-25 08:40:35,311 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:40:35,311 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2018-07-25 08:40:35,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-25 08:40:35,311 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:35,311 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 16, 1, 1, 1, 1] [2018-07-25 08:40:35,312 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:35,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1504102331, now seen corresponding path program 31 times [2018-07-25 08:40:35,315 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:35,437 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 272 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:35,438 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:35,438 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:40:35,438 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:40:35,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:40:35,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:40:35,440 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 36 states. [2018-07-25 08:40:35,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:35,620 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2018-07-25 08:40:35,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:40:35,620 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 53 [2018-07-25 08:40:35,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:35,621 INFO L225 Difference]: With dead ends: 92 [2018-07-25 08:40:35,621 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:40:35,623 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=681, Invalid=2075, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:40:35,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:40:35,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:40:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:40:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-07-25 08:40:35,633 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 53 [2018-07-25 08:40:35,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:35,633 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-07-25 08:40:35,633 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:40:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-07-25 08:40:35,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:40:35,634 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:35,634 INFO L354 BasicCegarLoop]: trace histogram [17, 17, 16, 1, 1, 1, 1] [2018-07-25 08:40:35,635 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:35,635 INFO L82 PathProgramCache]: Analyzing trace with hash 721753570, now seen corresponding path program 32 times [2018-07-25 08:40:35,635 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:35,717 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 153 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:35,717 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:35,717 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:40:35,718 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:40:35,718 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:40:35,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:40:35,719 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 21 states. [2018-07-25 08:40:35,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:35,809 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2018-07-25 08:40:35,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:40:35,810 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 54 [2018-07-25 08:40:35,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:35,811 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:40:35,811 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:40:35,812 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:40:35,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:40:35,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2018-07-25 08:40:35,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:40:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-07-25 08:40:35,819 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 54 [2018-07-25 08:40:35,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:35,820 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-07-25 08:40:35,820 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:40:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-07-25 08:40:35,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:40:35,820 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:35,820 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 17, 1, 1, 1, 1] [2018-07-25 08:40:35,821 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:35,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2115512138, now seen corresponding path program 33 times [2018-07-25 08:40:35,821 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 306 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:35,945 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:35,946 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:40:35,946 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:40:35,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:40:35,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:40:35,947 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 38 states. [2018-07-25 08:40:36,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:36,139 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2018-07-25 08:40:36,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:40:36,139 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 56 [2018-07-25 08:40:36,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:36,139 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:40:36,140 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 08:40:36,141 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=757, Invalid=2323, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:40:36,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 08:40:36,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-25 08:40:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-25 08:40:36,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2018-07-25 08:40:36,149 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 56 [2018-07-25 08:40:36,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:36,149 INFO L472 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2018-07-25 08:40:36,149 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:40:36,149 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2018-07-25 08:40:36,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-25 08:40:36,150 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:36,150 INFO L354 BasicCegarLoop]: trace histogram [18, 18, 17, 1, 1, 1, 1] [2018-07-25 08:40:36,150 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:36,150 INFO L82 PathProgramCache]: Analyzing trace with hash -343878717, now seen corresponding path program 34 times [2018-07-25 08:40:36,151 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:36,229 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 171 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:36,230 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:36,230 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:40:36,230 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:40:36,231 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:40:36,231 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:40:36,231 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 22 states. [2018-07-25 08:40:36,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:36,324 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2018-07-25 08:40:36,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:40:36,325 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 57 [2018-07-25 08:40:36,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:36,325 INFO L225 Difference]: With dead ends: 66 [2018-07-25 08:40:36,326 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 08:40:36,327 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:40:36,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 08:40:36,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-07-25 08:40:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-25 08:40:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2018-07-25 08:40:36,334 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 57 [2018-07-25 08:40:36,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:36,334 INFO L472 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2018-07-25 08:40:36,334 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:40:36,335 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2018-07-25 08:40:36,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 08:40:36,335 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:36,335 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 18, 1, 1, 1, 1] [2018-07-25 08:40:36,336 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:36,336 INFO L82 PathProgramCache]: Analyzing trace with hash 245100779, now seen corresponding path program 35 times [2018-07-25 08:40:36,336 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:36,477 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 342 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:36,477 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:36,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:40:36,478 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:40:36,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:40:36,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:40:36,481 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 40 states. [2018-07-25 08:40:36,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:36,771 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2018-07-25 08:40:36,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:40:36,771 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 59 [2018-07-25 08:40:36,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:36,772 INFO L225 Difference]: With dead ends: 102 [2018-07-25 08:40:36,772 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:40:36,775 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=837, Invalid=2585, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:40:36,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:40:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:40:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:40:36,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-07-25 08:40:36,785 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 59 [2018-07-25 08:40:36,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:36,786 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-07-25 08:40:36,786 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:40:36,786 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-07-25 08:40:36,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:40:36,786 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:36,787 INFO L354 BasicCegarLoop]: trace histogram [19, 19, 18, 1, 1, 1, 1] [2018-07-25 08:40:36,787 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:36,787 INFO L82 PathProgramCache]: Analyzing trace with hash 379241938, now seen corresponding path program 36 times [2018-07-25 08:40:36,787 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:36,915 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 190 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:36,915 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:36,915 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:40:36,916 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:40:36,916 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:40:36,916 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:40:36,917 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 23 states. [2018-07-25 08:40:37,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:37,091 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2018-07-25 08:40:37,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:40:37,091 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 60 [2018-07-25 08:40:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:37,092 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:40:37,092 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:40:37,094 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:40:37,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:40:37,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2018-07-25 08:40:37,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:40:37,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-07-25 08:40:37,105 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 60 [2018-07-25 08:40:37,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:37,105 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-07-25 08:40:37,105 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:40:37,105 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-07-25 08:40:37,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:40:37,106 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:37,106 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 19, 1, 1, 1, 1] [2018-07-25 08:40:37,106 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:37,106 INFO L82 PathProgramCache]: Analyzing trace with hash -620651718, now seen corresponding path program 37 times [2018-07-25 08:40:37,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 380 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:37,285 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:37,286 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:40:37,286 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:40:37,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:40:37,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:40:37,288 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 42 states. [2018-07-25 08:40:37,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:37,446 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2018-07-25 08:40:37,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:40:37,446 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 62 [2018-07-25 08:40:37,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:37,447 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:40:37,447 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 08:40:37,449 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=921, Invalid=2861, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:40:37,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 08:40:37,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-25 08:40:37,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-25 08:40:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2018-07-25 08:40:37,460 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 62 [2018-07-25 08:40:37,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:37,460 INFO L472 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2018-07-25 08:40:37,460 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:40:37,460 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2018-07-25 08:40:37,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-25 08:40:37,460 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:37,461 INFO L354 BasicCegarLoop]: trace histogram [20, 20, 19, 1, 1, 1, 1] [2018-07-25 08:40:37,461 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:37,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1259030771, now seen corresponding path program 38 times [2018-07-25 08:40:37,461 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 210 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:37,588 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:37,588 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:40:37,588 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:40:37,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:40:37,589 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:40:37,589 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 24 states. [2018-07-25 08:40:37,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:37,712 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2018-07-25 08:40:37,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:40:37,712 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 63 [2018-07-25 08:40:37,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:37,713 INFO L225 Difference]: With dead ends: 72 [2018-07-25 08:40:37,713 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 08:40:37,714 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:40:37,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 08:40:37,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2018-07-25 08:40:37,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-25 08:40:37,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2018-07-25 08:40:37,726 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 63 [2018-07-25 08:40:37,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:37,727 INFO L472 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2018-07-25 08:40:37,727 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:40:37,727 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2018-07-25 08:40:37,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-25 08:40:37,727 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:37,728 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 20, 1, 1, 1, 1] [2018-07-25 08:40:37,728 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:37,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1252140517, now seen corresponding path program 39 times [2018-07-25 08:40:37,730 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:37,929 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 420 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:37,930 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:37,930 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:40:37,930 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:40:37,931 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:40:37,932 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:40:37,932 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 44 states. [2018-07-25 08:40:38,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:38,222 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2018-07-25 08:40:38,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:40:38,222 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 65 [2018-07-25 08:40:38,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:38,223 INFO L225 Difference]: With dead ends: 112 [2018-07-25 08:40:38,223 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:40:38,224 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1009, Invalid=3151, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:40:38,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:40:38,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:40:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:40:38,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-07-25 08:40:38,235 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 65 [2018-07-25 08:40:38,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:38,235 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-07-25 08:40:38,235 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:40:38,236 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-07-25 08:40:38,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:40:38,236 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:38,236 INFO L354 BasicCegarLoop]: trace histogram [21, 21, 20, 1, 1, 1, 1] [2018-07-25 08:40:38,237 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:38,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1414715966, now seen corresponding path program 40 times [2018-07-25 08:40:38,237 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 231 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:38,383 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:38,383 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:40:38,384 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:40:38,384 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:40:38,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:40:38,385 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 25 states. [2018-07-25 08:40:38,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:38,519 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2018-07-25 08:40:38,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:40:38,519 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 66 [2018-07-25 08:40:38,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:38,520 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:40:38,521 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:40:38,522 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:40:38,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:40:38,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-07-25 08:40:38,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:40:38,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-07-25 08:40:38,533 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 66 [2018-07-25 08:40:38,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:38,533 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-07-25 08:40:38,533 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:40:38,534 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-07-25 08:40:38,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:40:38,534 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:38,534 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 21, 1, 1, 1, 1] [2018-07-25 08:40:38,535 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:38,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1962655530, now seen corresponding path program 41 times [2018-07-25 08:40:38,535 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 462 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:38,713 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:38,713 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:40:38,713 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:40:38,714 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:40:38,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:40:38,715 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 46 states. [2018-07-25 08:40:39,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:39,012 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2018-07-25 08:40:39,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:40:39,013 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 68 [2018-07-25 08:40:39,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:39,013 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:40:39,014 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 08:40:39,017 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1101, Invalid=3455, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:40:39,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 08:40:39,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-25 08:40:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-25 08:40:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2018-07-25 08:40:39,028 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 68 [2018-07-25 08:40:39,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:39,028 INFO L472 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2018-07-25 08:40:39,028 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:40:39,028 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2018-07-25 08:40:39,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 08:40:39,029 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:39,029 INFO L354 BasicCegarLoop]: trace histogram [22, 22, 21, 1, 1, 1, 1] [2018-07-25 08:40:39,029 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:39,029 INFO L82 PathProgramCache]: Analyzing trace with hash -894403037, now seen corresponding path program 42 times [2018-07-25 08:40:39,029 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 253 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:39,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:39,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:40:39,135 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:40:39,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:40:39,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:40:39,136 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 26 states. [2018-07-25 08:40:39,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:39,253 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2018-07-25 08:40:39,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:40:39,254 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 69 [2018-07-25 08:40:39,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:39,254 INFO L225 Difference]: With dead ends: 78 [2018-07-25 08:40:39,254 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 08:40:39,256 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:40:39,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 08:40:39,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2018-07-25 08:40:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-25 08:40:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2018-07-25 08:40:39,266 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 69 [2018-07-25 08:40:39,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:39,267 INFO L472 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2018-07-25 08:40:39,267 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:40:39,267 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2018-07-25 08:40:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-25 08:40:39,268 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:39,268 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1, 1] [2018-07-25 08:40:39,268 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:39,268 INFO L82 PathProgramCache]: Analyzing trace with hash -527793333, now seen corresponding path program 43 times [2018-07-25 08:40:39,268 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 506 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:39,439 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:39,439 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:40:39,439 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:40:39,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:40:39,440 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:40:39,441 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 48 states. [2018-07-25 08:40:39,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:39,739 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2018-07-25 08:40:39,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:40:39,739 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 71 [2018-07-25 08:40:39,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:39,740 INFO L225 Difference]: With dead ends: 122 [2018-07-25 08:40:39,740 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:40:39,742 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1197, Invalid=3773, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:40:39,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:40:39,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:40:39,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:40:39,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-07-25 08:40:39,752 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 71 [2018-07-25 08:40:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:39,752 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-07-25 08:40:39,752 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:40:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-07-25 08:40:39,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:40:39,753 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:39,753 INFO L354 BasicCegarLoop]: trace histogram [23, 23, 22, 1, 1, 1, 1] [2018-07-25 08:40:39,754 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:39,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1792657998, now seen corresponding path program 44 times [2018-07-25 08:40:39,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 276 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:39,865 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:39,865 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:40:39,866 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:40:39,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:40:39,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:40:39,867 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 27 states. [2018-07-25 08:40:40,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:40,001 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2018-07-25 08:40:40,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:40:40,001 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 72 [2018-07-25 08:40:40,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:40,002 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:40:40,002 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:40:40,003 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:40:40,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:40:40,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2018-07-25 08:40:40,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:40:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-07-25 08:40:40,017 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72 [2018-07-25 08:40:40,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:40,017 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-07-25 08:40:40,017 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:40:40,018 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-07-25 08:40:40,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:40:40,018 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:40,019 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 23, 1, 1, 1, 1] [2018-07-25 08:40:40,019 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:40,019 INFO L82 PathProgramCache]: Analyzing trace with hash -462384358, now seen corresponding path program 45 times [2018-07-25 08:40:40,019 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 552 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:40,221 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:40,221 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:40:40,221 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:40:40,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:40:40,223 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:40:40,223 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 50 states. [2018-07-25 08:40:40,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:40,563 INFO L93 Difference]: Finished difference Result 127 states and 129 transitions. [2018-07-25 08:40:40,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:40:40,563 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 74 [2018-07-25 08:40:40,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:40,564 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:40:40,564 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 08:40:40,566 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1297, Invalid=4105, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:40:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 08:40:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-25 08:40:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-25 08:40:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2018-07-25 08:40:40,576 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 74 [2018-07-25 08:40:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:40,577 INFO L472 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2018-07-25 08:40:40,577 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:40:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2018-07-25 08:40:40,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-25 08:40:40,577 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:40,578 INFO L354 BasicCegarLoop]: trace histogram [24, 24, 23, 1, 1, 1, 1] [2018-07-25 08:40:40,578 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:40,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1997435731, now seen corresponding path program 46 times [2018-07-25 08:40:40,578 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 300 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:40,710 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:40,710 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:40:40,710 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:40:40,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:40:40,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:40:40,711 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 28 states. [2018-07-25 08:40:40,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:40,827 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2018-07-25 08:40:40,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:40:40,828 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 75 [2018-07-25 08:40:40,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:40,829 INFO L225 Difference]: With dead ends: 84 [2018-07-25 08:40:40,829 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 08:40:40,830 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:40:40,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 08:40:40,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2018-07-25 08:40:40,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-25 08:40:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2018-07-25 08:40:40,841 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 75 [2018-07-25 08:40:40,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:40,841 INFO L472 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2018-07-25 08:40:40,841 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:40:40,842 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2018-07-25 08:40:40,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-25 08:40:40,842 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:40,842 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 24, 1, 1, 1, 1] [2018-07-25 08:40:40,843 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:40,843 INFO L82 PathProgramCache]: Analyzing trace with hash -314577797, now seen corresponding path program 47 times [2018-07-25 08:40:40,843 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:41,018 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 600 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:41,018 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:41,019 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:40:41,019 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:40:41,019 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:40:41,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:40:41,020 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 52 states. [2018-07-25 08:40:41,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:41,337 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2018-07-25 08:40:41,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:40:41,337 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 77 [2018-07-25 08:40:41,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:41,338 INFO L225 Difference]: With dead ends: 132 [2018-07-25 08:40:41,338 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:40:41,345 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1401, Invalid=4451, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:40:41,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:40:41,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:40:41,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:40:41,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-07-25 08:40:41,356 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 77 [2018-07-25 08:40:41,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:41,356 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-07-25 08:40:41,356 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:40:41,356 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-07-25 08:40:41,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:40:41,357 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:41,357 INFO L354 BasicCegarLoop]: trace histogram [25, 25, 24, 1, 1, 1, 1] [2018-07-25 08:40:41,357 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:41,358 INFO L82 PathProgramCache]: Analyzing trace with hash -546310750, now seen corresponding path program 48 times [2018-07-25 08:40:41,358 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 325 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:41,456 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:41,456 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:40:41,457 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:40:41,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:40:41,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:40:41,458 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 29 states. [2018-07-25 08:40:41,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:41,569 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2018-07-25 08:40:41,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:40:41,570 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 78 [2018-07-25 08:40:41,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:41,571 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:40:41,571 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:40:41,572 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:40:41,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:40:41,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2018-07-25 08:40:41,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:40:41,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-07-25 08:40:41,583 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 78 [2018-07-25 08:40:41,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:41,583 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-07-25 08:40:41,584 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:40:41,584 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-07-25 08:40:41,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:40:41,584 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:41,585 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 25, 1, 1, 1, 1] [2018-07-25 08:40:41,585 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:41,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1018554614, now seen corresponding path program 49 times [2018-07-25 08:40:41,585 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:41,754 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 650 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:41,754 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:41,754 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:40:41,755 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:40:41,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:40:41,757 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:40:41,757 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 54 states. [2018-07-25 08:40:41,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:41,995 INFO L93 Difference]: Finished difference Result 137 states and 139 transitions. [2018-07-25 08:40:41,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:40:41,996 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 80 [2018-07-25 08:40:41,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:41,996 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:40:41,997 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 08:40:41,999 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1509, Invalid=4811, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:40:42,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 08:40:42,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-25 08:40:42,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-25 08:40:42,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2018-07-25 08:40:42,017 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 80 [2018-07-25 08:40:42,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:42,018 INFO L472 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2018-07-25 08:40:42,018 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:40:42,018 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2018-07-25 08:40:42,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-25 08:40:42,019 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:42,019 INFO L354 BasicCegarLoop]: trace histogram [26, 26, 25, 1, 1, 1, 1] [2018-07-25 08:40:42,019 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:42,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1732454531, now seen corresponding path program 50 times [2018-07-25 08:40:42,021 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 351 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:42,134 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:42,134 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:40:42,135 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:40:42,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:40:42,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:40:42,136 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 30 states. [2018-07-25 08:40:42,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:42,261 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2018-07-25 08:40:42,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:40:42,262 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 81 [2018-07-25 08:40:42,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:42,263 INFO L225 Difference]: With dead ends: 90 [2018-07-25 08:40:42,263 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 08:40:42,264 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:40:42,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 08:40:42,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2018-07-25 08:40:42,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-25 08:40:42,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2018-07-25 08:40:42,277 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 81 [2018-07-25 08:40:42,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:42,278 INFO L472 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2018-07-25 08:40:42,278 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:40:42,278 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2018-07-25 08:40:42,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-25 08:40:42,279 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:42,279 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 26, 1, 1, 1, 1] [2018-07-25 08:40:42,279 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:42,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1558440533, now seen corresponding path program 51 times [2018-07-25 08:40:42,279 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 702 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:42,457 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:42,457 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:40:42,458 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:40:42,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:40:42,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:40:42,459 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 56 states. [2018-07-25 08:40:42,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:42,810 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2018-07-25 08:40:42,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:40:42,810 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 83 [2018-07-25 08:40:42,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:42,811 INFO L225 Difference]: With dead ends: 142 [2018-07-25 08:40:42,811 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:40:42,814 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1621, Invalid=5185, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:40:42,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:40:42,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:40:42,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:40:42,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-07-25 08:40:42,827 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 83 [2018-07-25 08:40:42,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:42,827 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-07-25 08:40:42,827 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:40:42,827 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-07-25 08:40:42,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:40:42,828 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:42,828 INFO L354 BasicCegarLoop]: trace histogram [27, 27, 26, 1, 1, 1, 1] [2018-07-25 08:40:42,829 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:42,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1484023186, now seen corresponding path program 52 times [2018-07-25 08:40:42,829 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 378 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:42,953 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:42,954 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:40:42,954 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:40:42,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:40:42,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:40:42,955 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 31 states. [2018-07-25 08:40:43,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:43,082 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2018-07-25 08:40:43,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:40:43,083 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 84 [2018-07-25 08:40:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:43,083 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:40:43,084 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:40:43,085 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:40:43,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:40:43,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2018-07-25 08:40:43,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:40:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-07-25 08:40:43,098 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 84 [2018-07-25 08:40:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:43,098 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-07-25 08:40:43,098 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:40:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-07-25 08:40:43,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:40:43,099 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:43,099 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 27, 1, 1, 1, 1] [2018-07-25 08:40:43,100 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:43,100 INFO L82 PathProgramCache]: Analyzing trace with hash 217205498, now seen corresponding path program 53 times [2018-07-25 08:40:43,100 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 756 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:43,295 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:43,296 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:40:43,296 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:40:43,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:40:43,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:40:43,297 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 58 states. [2018-07-25 08:40:43,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:43,707 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2018-07-25 08:40:43,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:40:43,707 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 86 [2018-07-25 08:40:43,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:43,708 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:40:43,708 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 08:40:43,710 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1737, Invalid=5573, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:40:43,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 08:40:43,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-25 08:40:43,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-25 08:40:43,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2018-07-25 08:40:43,726 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 86 [2018-07-25 08:40:43,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:43,727 INFO L472 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2018-07-25 08:40:43,727 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:40:43,727 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2018-07-25 08:40:43,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-25 08:40:43,728 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:43,728 INFO L354 BasicCegarLoop]: trace histogram [28, 28, 27, 1, 1, 1, 1] [2018-07-25 08:40:43,728 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:43,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1559010739, now seen corresponding path program 54 times [2018-07-25 08:40:43,729 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:43,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 406 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:43,872 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:43,872 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:40:43,873 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:40:43,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:40:43,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:40:43,873 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 32 states. [2018-07-25 08:40:44,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:44,068 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2018-07-25 08:40:44,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:40:44,069 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 87 [2018-07-25 08:40:44,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:44,070 INFO L225 Difference]: With dead ends: 96 [2018-07-25 08:40:44,070 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 08:40:44,070 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:40:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 08:40:44,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2018-07-25 08:40:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-25 08:40:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2018-07-25 08:40:44,084 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 87 [2018-07-25 08:40:44,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:44,084 INFO L472 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2018-07-25 08:40:44,084 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:40:44,084 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2018-07-25 08:40:44,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-25 08:40:44,085 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:44,085 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 28, 1, 1, 1, 1] [2018-07-25 08:40:44,086 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:44,086 INFO L82 PathProgramCache]: Analyzing trace with hash -734200101, now seen corresponding path program 55 times [2018-07-25 08:40:44,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 812 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:44,256 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:44,256 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:40:44,256 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:40:44,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:40:44,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:40:44,257 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 60 states. [2018-07-25 08:40:44,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:44,628 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2018-07-25 08:40:44,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:40:44,628 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 89 [2018-07-25 08:40:44,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:44,629 INFO L225 Difference]: With dead ends: 152 [2018-07-25 08:40:44,629 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:40:44,631 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1857, Invalid=5975, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:40:44,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:40:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:40:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:40:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-07-25 08:40:44,644 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 89 [2018-07-25 08:40:44,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:44,644 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-07-25 08:40:44,644 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:40:44,644 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-07-25 08:40:44,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:40:44,645 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:44,645 INFO L354 BasicCegarLoop]: trace histogram [29, 29, 28, 1, 1, 1, 1] [2018-07-25 08:40:44,646 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:44,646 INFO L82 PathProgramCache]: Analyzing trace with hash -274889342, now seen corresponding path program 56 times [2018-07-25 08:40:44,646 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 435 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:44,749 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:44,750 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:40:44,750 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:40:44,750 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:40:44,751 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:40:44,751 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 33 states. [2018-07-25 08:40:44,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:44,867 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2018-07-25 08:40:44,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:40:44,867 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 90 [2018-07-25 08:40:44,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:44,868 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:40:44,868 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:40:44,869 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:40:44,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:40:44,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2018-07-25 08:40:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:40:44,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2018-07-25 08:40:44,881 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 90 [2018-07-25 08:40:44,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:44,882 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2018-07-25 08:40:44,882 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:40:44,882 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2018-07-25 08:40:44,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:40:44,883 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:44,883 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 29, 1, 1, 1, 1] [2018-07-25 08:40:44,883 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:44,883 INFO L82 PathProgramCache]: Analyzing trace with hash 2119380714, now seen corresponding path program 57 times [2018-07-25 08:40:44,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 870 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:45,064 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:45,064 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:40:45,064 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:40:45,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:40:45,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:40:45,066 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 62 states. [2018-07-25 08:40:45,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:45,443 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2018-07-25 08:40:45,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:40:45,443 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 92 [2018-07-25 08:40:45,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:45,444 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:40:45,444 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 08:40:45,446 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1981, Invalid=6391, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:40:45,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 08:40:45,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-25 08:40:45,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-25 08:40:45,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2018-07-25 08:40:45,460 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 92 [2018-07-25 08:40:45,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:45,460 INFO L472 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2018-07-25 08:40:45,460 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:40:45,460 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2018-07-25 08:40:45,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-25 08:40:45,461 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:45,461 INFO L354 BasicCegarLoop]: trace histogram [30, 30, 29, 1, 1, 1, 1] [2018-07-25 08:40:45,462 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:45,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1680397027, now seen corresponding path program 58 times [2018-07-25 08:40:45,462 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 465 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:45,578 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:45,578 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:40:45,578 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:40:45,579 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:40:45,579 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:40:45,579 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 34 states. [2018-07-25 08:40:45,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:45,707 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2018-07-25 08:40:45,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:40:45,708 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 93 [2018-07-25 08:40:45,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:45,709 INFO L225 Difference]: With dead ends: 102 [2018-07-25 08:40:45,709 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 08:40:45,710 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 930 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:40:45,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 08:40:45,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2018-07-25 08:40:45,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 08:40:45,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2018-07-25 08:40:45,723 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 93 [2018-07-25 08:40:45,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:45,724 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2018-07-25 08:40:45,724 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:40:45,724 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2018-07-25 08:40:45,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-25 08:40:45,725 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:45,725 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 30, 1, 1, 1, 1] [2018-07-25 08:40:45,725 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:45,725 INFO L82 PathProgramCache]: Analyzing trace with hash -46094325, now seen corresponding path program 59 times [2018-07-25 08:40:45,726 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:45,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 930 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:45,906 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:45,906 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:40:45,906 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:40:45,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:40:45,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:40:45,907 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand 64 states. [2018-07-25 08:40:46,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:46,318 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2018-07-25 08:40:46,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:40:46,318 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 95 [2018-07-25 08:40:46,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:46,319 INFO L225 Difference]: With dead ends: 162 [2018-07-25 08:40:46,319 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:40:46,321 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2109, Invalid=6821, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:40:46,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:40:46,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:40:46,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:40:46,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-07-25 08:40:46,336 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 95 [2018-07-25 08:40:46,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:46,336 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-07-25 08:40:46,336 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:40:46,336 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-07-25 08:40:46,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:40:46,337 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:46,337 INFO L354 BasicCegarLoop]: trace histogram [31, 31, 30, 1, 1, 1, 1] [2018-07-25 08:40:46,338 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:46,338 INFO L82 PathProgramCache]: Analyzing trace with hash 366302578, now seen corresponding path program 60 times [2018-07-25 08:40:46,338 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 496 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:46,464 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:46,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:40:46,464 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:40:46,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:40:46,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:40:46,465 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 35 states. [2018-07-25 08:40:46,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:46,611 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2018-07-25 08:40:46,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:40:46,612 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 96 [2018-07-25 08:40:46,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:46,613 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:40:46,613 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:40:46,614 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:40:46,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:40:46,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-07-25 08:40:46,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:40:46,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-07-25 08:40:46,629 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 96 [2018-07-25 08:40:46,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:46,630 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-07-25 08:40:46,630 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:40:46,630 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-07-25 08:40:46,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:40:46,631 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:46,631 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 31, 1, 1, 1, 1] [2018-07-25 08:40:46,631 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:46,632 INFO L82 PathProgramCache]: Analyzing trace with hash -170474790, now seen corresponding path program 61 times [2018-07-25 08:40:46,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 992 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:46,836 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:46,836 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:40:46,837 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:40:46,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:40:46,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=3169, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:40:46,839 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 66 states. [2018-07-25 08:40:47,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:47,300 INFO L93 Difference]: Finished difference Result 167 states and 169 transitions. [2018-07-25 08:40:47,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:40:47,300 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 98 [2018-07-25 08:40:47,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:47,301 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:40:47,301 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 08:40:47,303 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2241, Invalid=7265, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:40:47,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 08:40:47,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-25 08:40:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-25 08:40:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2018-07-25 08:40:47,317 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 98 [2018-07-25 08:40:47,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:47,318 INFO L472 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2018-07-25 08:40:47,318 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:40:47,318 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2018-07-25 08:40:47,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-25 08:40:47,319 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:47,319 INFO L354 BasicCegarLoop]: trace histogram [32, 32, 31, 1, 1, 1, 1] [2018-07-25 08:40:47,319 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:47,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1939195923, now seen corresponding path program 62 times [2018-07-25 08:40:47,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:47,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 528 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:47,440 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:47,441 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:40:47,441 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:40:47,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:40:47,442 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:40:47,442 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand 36 states. [2018-07-25 08:40:47,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:47,585 INFO L93 Difference]: Finished difference Result 108 states and 109 transitions. [2018-07-25 08:40:47,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:40:47,585 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 99 [2018-07-25 08:40:47,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:47,586 INFO L225 Difference]: With dead ends: 108 [2018-07-25 08:40:47,586 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 08:40:47,587 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:40:47,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 08:40:47,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2018-07-25 08:40:47,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-25 08:40:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2018-07-25 08:40:47,604 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 99 [2018-07-25 08:40:47,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:47,604 INFO L472 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2018-07-25 08:40:47,605 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:40:47,605 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2018-07-25 08:40:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-25 08:40:47,606 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:47,606 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 32, 1, 1, 1, 1] [2018-07-25 08:40:47,606 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:47,609 INFO L82 PathProgramCache]: Analyzing trace with hash -448458437, now seen corresponding path program 63 times [2018-07-25 08:40:47,609 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 1056 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:47,807 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:47,807 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:40:47,808 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:40:47,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:40:47,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3367, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:40:47,809 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand 68 states. [2018-07-25 08:40:48,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:48,252 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2018-07-25 08:40:48,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:40:48,252 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 101 [2018-07-25 08:40:48,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:48,253 INFO L225 Difference]: With dead ends: 172 [2018-07-25 08:40:48,253 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:40:48,255 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2377, Invalid=7723, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:40:48,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:40:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:40:48,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:40:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-07-25 08:40:48,269 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 101 [2018-07-25 08:40:48,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:48,269 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-07-25 08:40:48,269 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:40:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-07-25 08:40:48,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:40:48,270 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:48,271 INFO L354 BasicCegarLoop]: trace histogram [33, 33, 32, 1, 1, 1, 1] [2018-07-25 08:40:48,271 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:48,271 INFO L82 PathProgramCache]: Analyzing trace with hash 495310178, now seen corresponding path program 64 times [2018-07-25 08:40:48,271 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 561 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:48,397 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:48,397 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:40:48,398 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:40:48,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:40:48,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:40:48,398 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 37 states. [2018-07-25 08:40:48,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:48,538 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2018-07-25 08:40:48,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:40:48,538 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 102 [2018-07-25 08:40:48,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:48,539 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:40:48,539 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:40:48,540 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:40:48,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:40:48,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2018-07-25 08:40:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:40:48,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-07-25 08:40:48,554 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 102 [2018-07-25 08:40:48,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:48,555 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-07-25 08:40:48,555 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:40:48,555 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-07-25 08:40:48,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:40:48,556 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:48,556 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 33, 1, 1, 1, 1] [2018-07-25 08:40:48,556 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:48,557 INFO L82 PathProgramCache]: Analyzing trace with hash -748222774, now seen corresponding path program 65 times [2018-07-25 08:40:48,557 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:48,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 1122 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:48,765 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:48,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:40:48,765 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:40:48,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:40:48,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1259, Invalid=3571, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:40:48,767 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 70 states. [2018-07-25 08:40:49,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:49,237 INFO L93 Difference]: Finished difference Result 177 states and 179 transitions. [2018-07-25 08:40:49,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:40:49,237 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 104 [2018-07-25 08:40:49,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:49,238 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:40:49,238 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 08:40:49,240 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2517, Invalid=8195, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:40:49,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 08:40:49,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-25 08:40:49,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 08:40:49,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2018-07-25 08:40:49,253 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 104 [2018-07-25 08:40:49,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:49,253 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2018-07-25 08:40:49,253 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:40:49,253 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2018-07-25 08:40:49,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-25 08:40:49,254 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:49,254 INFO L354 BasicCegarLoop]: trace histogram [34, 34, 33, 1, 1, 1, 1] [2018-07-25 08:40:49,255 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:49,255 INFO L82 PathProgramCache]: Analyzing trace with hash 206667075, now seen corresponding path program 66 times [2018-07-25 08:40:49,255 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 595 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:49,385 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:49,385 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:40:49,386 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:40:49,386 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:40:49,386 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:40:49,386 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 38 states. [2018-07-25 08:40:49,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:49,534 INFO L93 Difference]: Finished difference Result 114 states and 115 transitions. [2018-07-25 08:40:49,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:40:49,535 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 105 [2018-07-25 08:40:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:49,536 INFO L225 Difference]: With dead ends: 114 [2018-07-25 08:40:49,536 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 08:40:49,540 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:40:49,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 08:40:49,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2018-07-25 08:40:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-25 08:40:49,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2018-07-25 08:40:49,553 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 105 [2018-07-25 08:40:49,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:49,553 INFO L472 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2018-07-25 08:40:49,553 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:40:49,554 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2018-07-25 08:40:49,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-25 08:40:49,554 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:49,555 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 34, 1, 1, 1, 1] [2018-07-25 08:40:49,555 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:49,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1038629483, now seen corresponding path program 67 times [2018-07-25 08:40:49,555 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 1190 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:49,763 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:49,764 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:40:49,764 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:40:49,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:40:49,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:40:49,765 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand 72 states. [2018-07-25 08:40:50,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:50,300 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2018-07-25 08:40:50,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:40:50,300 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 107 [2018-07-25 08:40:50,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:50,301 INFO L225 Difference]: With dead ends: 182 [2018-07-25 08:40:50,302 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:40:50,304 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2661, Invalid=8681, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:40:50,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:40:50,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:40:50,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:40:50,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2018-07-25 08:40:50,321 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 107 [2018-07-25 08:40:50,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:50,322 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2018-07-25 08:40:50,322 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:40:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2018-07-25 08:40:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:40:50,323 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:50,323 INFO L354 BasicCegarLoop]: trace histogram [35, 35, 34, 1, 1, 1, 1] [2018-07-25 08:40:50,324 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:50,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1701247662, now seen corresponding path program 68 times [2018-07-25 08:40:50,324 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 630 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:50,508 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:50,508 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:40:50,509 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:40:50,509 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:40:50,509 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:40:50,510 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 39 states. [2018-07-25 08:40:50,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:50,728 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2018-07-25 08:40:50,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:40:50,728 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 108 [2018-07-25 08:40:50,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:50,729 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:40:50,730 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:40:50,730 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:40:50,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:40:50,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2018-07-25 08:40:50,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:40:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-07-25 08:40:50,745 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 108 [2018-07-25 08:40:50,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:50,745 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-07-25 08:40:50,745 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:40:50,745 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-07-25 08:40:50,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:40:50,746 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:50,747 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 35, 1, 1, 1, 1] [2018-07-25 08:40:50,747 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:50,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1483602618, now seen corresponding path program 69 times [2018-07-25 08:40:50,747 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1260 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:50,965 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:50,966 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:40:50,966 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:40:50,967 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:40:50,967 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=3997, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:40:50,968 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 74 states. [2018-07-25 08:40:51,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:51,453 INFO L93 Difference]: Finished difference Result 187 states and 189 transitions. [2018-07-25 08:40:51,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:40:51,453 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 110 [2018-07-25 08:40:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:51,455 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:40:51,455 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 08:40:51,457 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1855 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2809, Invalid=9181, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:40:51,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 08:40:51,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-25 08:40:51,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-25 08:40:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2018-07-25 08:40:51,472 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 110 [2018-07-25 08:40:51,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:51,472 INFO L472 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2018-07-25 08:40:51,472 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:40:51,472 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2018-07-25 08:40:51,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-25 08:40:51,473 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:51,474 INFO L354 BasicCegarLoop]: trace histogram [36, 36, 35, 1, 1, 1, 1] [2018-07-25 08:40:51,474 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:51,474 INFO L82 PathProgramCache]: Analyzing trace with hash -637930893, now seen corresponding path program 70 times [2018-07-25 08:40:51,474 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 666 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:51,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:51,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:40:51,616 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:40:51,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:40:51,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:40:51,617 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand 40 states. [2018-07-25 08:40:51,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:51,767 INFO L93 Difference]: Finished difference Result 120 states and 121 transitions. [2018-07-25 08:40:51,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:40:51,768 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 111 [2018-07-25 08:40:51,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:51,769 INFO L225 Difference]: With dead ends: 120 [2018-07-25 08:40:51,769 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 08:40:51,770 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:40:51,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 08:40:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-07-25 08:40:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-25 08:40:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2018-07-25 08:40:51,786 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 111 [2018-07-25 08:40:51,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:51,786 INFO L472 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2018-07-25 08:40:51,786 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:40:51,786 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2018-07-25 08:40:51,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-25 08:40:51,787 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:51,788 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 36, 1, 1, 1, 1] [2018-07-25 08:40:51,788 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:51,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1128801179, now seen corresponding path program 71 times [2018-07-25 08:40:51,788 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 1332 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:52,017 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:52,018 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:40:52,018 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:40:52,019 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:40:52,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=4219, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:40:52,020 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand 76 states. [2018-07-25 08:40:52,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:52,320 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2018-07-25 08:40:52,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:40:52,321 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 113 [2018-07-25 08:40:52,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:52,322 INFO L225 Difference]: With dead ends: 192 [2018-07-25 08:40:52,322 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:40:52,324 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2961, Invalid=9695, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:40:52,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:40:52,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:40:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:40:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-07-25 08:40:52,340 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 113 [2018-07-25 08:40:52,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:52,340 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-07-25 08:40:52,340 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:40:52,340 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-07-25 08:40:52,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:40:52,341 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:52,341 INFO L354 BasicCegarLoop]: trace histogram [37, 37, 36, 1, 1, 1, 1] [2018-07-25 08:40:52,342 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:52,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1032264382, now seen corresponding path program 72 times [2018-07-25 08:40:52,342 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 703 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:52,498 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:52,498 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:40:52,498 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:40:52,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:40:52,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:40:52,499 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 41 states. [2018-07-25 08:40:52,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:52,654 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2018-07-25 08:40:52,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:40:52,654 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 114 [2018-07-25 08:40:52,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:52,655 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:40:52,655 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:40:52,656 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1406 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:40:52,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:40:52,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2018-07-25 08:40:52,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:40:52,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2018-07-25 08:40:52,670 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 114 [2018-07-25 08:40:52,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:52,671 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2018-07-25 08:40:52,671 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:40:52,671 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2018-07-25 08:40:52,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:40:52,672 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:52,672 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 37, 1, 1, 1, 1] [2018-07-25 08:40:52,672 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:52,673 INFO L82 PathProgramCache]: Analyzing trace with hash 131440298, now seen corresponding path program 73 times [2018-07-25 08:40:52,673 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2109 backedges. 1406 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:52,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:52,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:40:52,899 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:40:52,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:40:52,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1559, Invalid=4447, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:40:52,900 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 78 states. [2018-07-25 08:40:53,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:53,432 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2018-07-25 08:40:53,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:40:53,432 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 116 [2018-07-25 08:40:53,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:53,433 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:40:53,434 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 08:40:53,436 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3117, Invalid=10223, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:40:53,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 08:40:53,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-25 08:40:53,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 08:40:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2018-07-25 08:40:53,450 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 116 [2018-07-25 08:40:53,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:53,450 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2018-07-25 08:40:53,450 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:40:53,450 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2018-07-25 08:40:53,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-25 08:40:53,451 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:53,451 INFO L354 BasicCegarLoop]: trace histogram [38, 38, 37, 1, 1, 1, 1] [2018-07-25 08:40:53,452 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:53,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1387079587, now seen corresponding path program 74 times [2018-07-25 08:40:53,452 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 741 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:53,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:53,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:40:53,598 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:40:53,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:40:53,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:40:53,599 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 42 states. [2018-07-25 08:40:53,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:53,756 INFO L93 Difference]: Finished difference Result 126 states and 127 transitions. [2018-07-25 08:40:53,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:40:53,757 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 117 [2018-07-25 08:40:53,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:53,758 INFO L225 Difference]: With dead ends: 126 [2018-07-25 08:40:53,758 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 08:40:53,759 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:40:53,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 08:40:53,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2018-07-25 08:40:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-25 08:40:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2018-07-25 08:40:53,812 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 117 [2018-07-25 08:40:53,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:53,812 INFO L472 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2018-07-25 08:40:53,812 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:40:53,812 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2018-07-25 08:40:53,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-25 08:40:53,813 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:53,814 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 38, 1, 1, 1, 1] [2018-07-25 08:40:53,814 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:53,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1543687371, now seen corresponding path program 75 times [2018-07-25 08:40:53,814 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 1482 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:54,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:54,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:40:54,041 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:40:54,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:40:54,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4681, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:40:54,042 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand 80 states. [2018-07-25 08:40:54,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:54,615 INFO L93 Difference]: Finished difference Result 202 states and 204 transitions. [2018-07-25 08:40:54,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:40:54,615 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 119 [2018-07-25 08:40:54,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:54,616 INFO L225 Difference]: With dead ends: 202 [2018-07-25 08:40:54,617 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:40:54,618 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3277, Invalid=10765, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:40:54,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:40:54,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:40:54,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:40:54,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-07-25 08:40:54,637 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 119 [2018-07-25 08:40:54,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:54,638 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-07-25 08:40:54,638 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:40:54,638 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-07-25 08:40:54,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:40:54,639 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:54,639 INFO L354 BasicCegarLoop]: trace histogram [39, 39, 38, 1, 1, 1, 1] [2018-07-25 08:40:54,639 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:54,640 INFO L82 PathProgramCache]: Analyzing trace with hash -871402190, now seen corresponding path program 76 times [2018-07-25 08:40:54,640 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 780 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:54,793 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:54,793 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:40:54,794 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:40:54,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:40:54,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:40:54,797 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 43 states. [2018-07-25 08:40:54,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:54,935 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2018-07-25 08:40:54,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:40:54,936 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 120 [2018-07-25 08:40:54,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:54,937 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:40:54,937 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:40:54,938 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1560 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:40:54,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:40:54,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2018-07-25 08:40:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:40:54,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-07-25 08:40:54,952 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 120 [2018-07-25 08:40:54,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:54,952 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-07-25 08:40:54,952 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:40:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-07-25 08:40:54,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:40:54,954 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:54,954 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 39, 1, 1, 1, 1] [2018-07-25 08:40:54,954 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:54,954 INFO L82 PathProgramCache]: Analyzing trace with hash 101184154, now seen corresponding path program 77 times [2018-07-25 08:40:54,955 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:55,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2340 backedges. 1560 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:55,184 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:55,184 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:40:55,185 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:40:55,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:40:55,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1721, Invalid=4921, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:40:55,189 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 82 states. [2018-07-25 08:40:55,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:55,695 INFO L93 Difference]: Finished difference Result 207 states and 209 transitions. [2018-07-25 08:40:55,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:40:55,696 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 122 [2018-07-25 08:40:55,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:55,697 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:40:55,697 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 08:40:55,698 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3441, Invalid=11321, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:40:55,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 08:40:55,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-25 08:40:55,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-25 08:40:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2018-07-25 08:40:55,713 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 122 [2018-07-25 08:40:55,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:55,713 INFO L472 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2018-07-25 08:40:55,713 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:40:55,713 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2018-07-25 08:40:55,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-25 08:40:55,714 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:55,714 INFO L354 BasicCegarLoop]: trace histogram [40, 40, 39, 1, 1, 1, 1] [2018-07-25 08:40:55,714 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:55,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1460214995, now seen corresponding path program 78 times [2018-07-25 08:40:55,715 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:55,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 820 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:55,868 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:55,868 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:40:55,868 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:40:55,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:40:55,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:40:55,869 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand 44 states. [2018-07-25 08:40:56,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:56,027 INFO L93 Difference]: Finished difference Result 132 states and 133 transitions. [2018-07-25 08:40:56,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:40:56,027 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 123 [2018-07-25 08:40:56,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:56,028 INFO L225 Difference]: With dead ends: 132 [2018-07-25 08:40:56,029 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 08:40:56,029 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:40:56,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 08:40:56,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2018-07-25 08:40:56,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-25 08:40:56,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2018-07-25 08:40:56,045 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 123 [2018-07-25 08:40:56,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:56,046 INFO L472 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2018-07-25 08:40:56,046 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:40:56,046 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2018-07-25 08:40:56,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-25 08:40:56,047 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:56,047 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 40, 1, 1, 1, 1] [2018-07-25 08:40:56,047 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:56,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1187629573, now seen corresponding path program 79 times [2018-07-25 08:40:56,048 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 1640 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:56,273 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:56,273 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:40:56,274 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:40:56,274 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:40:56,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1805, Invalid=5167, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:40:56,275 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 84 states. [2018-07-25 08:40:56,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:56,890 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2018-07-25 08:40:56,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:40:56,891 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 125 [2018-07-25 08:40:56,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:56,892 INFO L225 Difference]: With dead ends: 212 [2018-07-25 08:40:56,892 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:40:56,894 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3609, Invalid=11891, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:40:56,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:40:56,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:40:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:40:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-07-25 08:40:56,914 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 125 [2018-07-25 08:40:56,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:56,915 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-07-25 08:40:56,915 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:40:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-07-25 08:40:56,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:40:56,916 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:56,917 INFO L354 BasicCegarLoop]: trace histogram [41, 41, 40, 1, 1, 1, 1] [2018-07-25 08:40:56,917 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:56,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1338422562, now seen corresponding path program 80 times [2018-07-25 08:40:56,917 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 861 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:57,121 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:57,121 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:40:57,122 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:40:57,122 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:40:57,122 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:40:57,122 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 45 states. [2018-07-25 08:40:57,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:57,326 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2018-07-25 08:40:57,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:40:57,327 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 126 [2018-07-25 08:40:57,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:57,328 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:40:57,328 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:40:57,329 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:40:57,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:40:57,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-07-25 08:40:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:40:57,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-07-25 08:40:57,350 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 126 [2018-07-25 08:40:57,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:57,350 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-07-25 08:40:57,351 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:40:57,351 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-07-25 08:40:57,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:40:57,352 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:57,352 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 41, 1, 1, 1, 1] [2018-07-25 08:40:57,352 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:57,352 INFO L82 PathProgramCache]: Analyzing trace with hash 2028926602, now seen corresponding path program 81 times [2018-07-25 08:40:57,352 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2583 backedges. 1722 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:57,727 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:57,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:40:57,727 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:40:57,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:40:57,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5419, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:40:57,728 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 86 states. [2018-07-25 08:40:58,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:58,273 INFO L93 Difference]: Finished difference Result 217 states and 219 transitions. [2018-07-25 08:40:58,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:40:58,274 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 128 [2018-07-25 08:40:58,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:58,275 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:40:58,275 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 08:40:58,276 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2542 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3781, Invalid=12475, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:40:58,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 08:40:58,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-25 08:40:58,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-25 08:40:58,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2018-07-25 08:40:58,293 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 128 [2018-07-25 08:40:58,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:58,294 INFO L472 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2018-07-25 08:40:58,294 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:40:58,294 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2018-07-25 08:40:58,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-25 08:40:58,294 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:58,295 INFO L354 BasicCegarLoop]: trace histogram [42, 42, 41, 1, 1, 1, 1] [2018-07-25 08:40:58,295 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:58,295 INFO L82 PathProgramCache]: Analyzing trace with hash -768880125, now seen corresponding path program 82 times [2018-07-25 08:40:58,295 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 903 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:58,457 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:58,457 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:40:58,457 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:40:58,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:40:58,458 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:40:58,458 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand 46 states. [2018-07-25 08:40:58,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:58,616 INFO L93 Difference]: Finished difference Result 138 states and 139 transitions. [2018-07-25 08:40:58,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:40:58,616 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 129 [2018-07-25 08:40:58,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:58,617 INFO L225 Difference]: With dead ends: 138 [2018-07-25 08:40:58,617 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 08:40:58,618 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1806 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:40:58,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 08:40:58,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 132. [2018-07-25 08:40:58,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-25 08:40:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2018-07-25 08:40:58,634 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 129 [2018-07-25 08:40:58,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:58,634 INFO L472 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2018-07-25 08:40:58,634 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:40:58,635 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2018-07-25 08:40:58,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-25 08:40:58,635 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:58,635 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 42, 1, 1, 1, 1] [2018-07-25 08:40:58,636 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:58,636 INFO L82 PathProgramCache]: Analyzing trace with hash -159359189, now seen corresponding path program 83 times [2018-07-25 08:40:58,636 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2709 backedges. 1806 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:58,912 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:58,912 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:40:58,913 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:40:58,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:40:58,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1979, Invalid=5677, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:40:58,914 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand 88 states. [2018-07-25 08:40:59,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:59,179 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2018-07-25 08:40:59,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:40:59,179 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 131 [2018-07-25 08:40:59,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:59,180 INFO L225 Difference]: With dead ends: 222 [2018-07-25 08:40:59,180 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:40:59,181 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2667 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3957, Invalid=13073, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:40:59,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:40:59,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:40:59,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:40:59,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2018-07-25 08:40:59,198 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 131 [2018-07-25 08:40:59,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:59,199 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2018-07-25 08:40:59,199 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:40:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2018-07-25 08:40:59,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:40:59,199 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:59,200 INFO L354 BasicCegarLoop]: trace histogram [43, 43, 42, 1, 1, 1, 1] [2018-07-25 08:40:59,200 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:59,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1484217070, now seen corresponding path program 84 times [2018-07-25 08:40:59,201 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 946 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:59,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:59,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:40:59,366 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:40:59,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:40:59,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:40:59,367 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 47 states. [2018-07-25 08:40:59,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:59,540 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2018-07-25 08:40:59,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:40:59,540 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 132 [2018-07-25 08:40:59,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:59,541 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:40:59,541 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:40:59,543 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1892 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:40:59,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:40:59,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2018-07-25 08:40:59,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:40:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-07-25 08:40:59,560 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 132 [2018-07-25 08:40:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:59,561 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-07-25 08:40:59,561 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:40:59,561 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-07-25 08:40:59,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:40:59,561 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:59,562 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 43, 1, 1, 1, 1] [2018-07-25 08:40:59,562 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:59,562 INFO L82 PathProgramCache]: Analyzing trace with hash -403395974, now seen corresponding path program 85 times [2018-07-25 08:40:59,563 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 1892 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:59,787 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:59,788 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:40:59,788 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:40:59,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:40:59,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=5941, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:40:59,789 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 90 states. [2018-07-25 08:41:00,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:00,281 INFO L93 Difference]: Finished difference Result 227 states and 229 transitions. [2018-07-25 08:41:00,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:41:00,281 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 134 [2018-07-25 08:41:00,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:00,282 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:41:00,282 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 08:41:00,283 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2795 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4137, Invalid=13685, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:41:00,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 08:41:00,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-25 08:41:00,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-25 08:41:00,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2018-07-25 08:41:00,301 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 134 [2018-07-25 08:41:00,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:00,301 INFO L472 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2018-07-25 08:41:00,301 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:41:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2018-07-25 08:41:00,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-25 08:41:00,302 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:00,302 INFO L354 BasicCegarLoop]: trace histogram [44, 44, 43, 1, 1, 1, 1] [2018-07-25 08:41:00,303 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:00,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1504921395, now seen corresponding path program 86 times [2018-07-25 08:41:00,303 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 990 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:00,447 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:00,447 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:41:00,447 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:41:00,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:41:00,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:41:00,448 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand 48 states. [2018-07-25 08:41:00,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:00,620 INFO L93 Difference]: Finished difference Result 144 states and 145 transitions. [2018-07-25 08:41:00,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:41:00,620 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 135 [2018-07-25 08:41:00,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:00,621 INFO L225 Difference]: With dead ends: 144 [2018-07-25 08:41:00,621 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 08:41:00,622 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1980 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:41:00,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 08:41:00,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2018-07-25 08:41:00,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-25 08:41:00,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2018-07-25 08:41:00,640 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 135 [2018-07-25 08:41:00,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:00,641 INFO L472 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2018-07-25 08:41:00,641 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:41:00,641 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2018-07-25 08:41:00,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-25 08:41:00,642 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:00,642 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 44, 1, 1, 1, 1] [2018-07-25 08:41:00,642 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:00,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1174452133, now seen corresponding path program 87 times [2018-07-25 08:41:00,642 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 1980 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:00,911 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:00,911 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:41:00,911 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:41:00,911 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:41:00,912 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6211, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:41:00,912 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 92 states. [2018-07-25 08:41:01,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:01,406 INFO L93 Difference]: Finished difference Result 232 states and 234 transitions. [2018-07-25 08:41:01,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:41:01,406 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 137 [2018-07-25 08:41:01,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:01,408 INFO L225 Difference]: With dead ends: 232 [2018-07-25 08:41:01,408 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:41:01,409 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4321, Invalid=14311, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:41:01,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:41:01,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:41:01,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:41:01,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-07-25 08:41:01,427 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 137 [2018-07-25 08:41:01,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:01,427 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-07-25 08:41:01,427 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:41:01,427 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-07-25 08:41:01,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:41:01,428 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:01,428 INFO L354 BasicCegarLoop]: trace histogram [45, 45, 44, 1, 1, 1, 1] [2018-07-25 08:41:01,429 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:01,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1321157890, now seen corresponding path program 88 times [2018-07-25 08:41:01,429 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 1035 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:01,592 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:01,592 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:41:01,592 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:41:01,593 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:41:01,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:41:01,593 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 49 states. [2018-07-25 08:41:01,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:01,765 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2018-07-25 08:41:01,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:41:01,765 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 138 [2018-07-25 08:41:01,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:01,767 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:41:01,767 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:41:01,768 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2070 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:41:01,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:41:01,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 141. [2018-07-25 08:41:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:41:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2018-07-25 08:41:01,788 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 138 [2018-07-25 08:41:01,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:01,789 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2018-07-25 08:41:01,789 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:41:01,789 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2018-07-25 08:41:01,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:41:01,790 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:01,790 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 45, 1, 1, 1, 1] [2018-07-25 08:41:01,790 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:01,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1677521302, now seen corresponding path program 89 times [2018-07-25 08:41:01,790 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:02,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 2070 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:02,102 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:02,103 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:41:02,103 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:41:02,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:41:02,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:41:02,104 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 94 states. [2018-07-25 08:41:02,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:02,802 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2018-07-25 08:41:02,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:41:02,802 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 140 [2018-07-25 08:41:02,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:02,803 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:41:02,803 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 08:41:02,805 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3060 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4509, Invalid=14951, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:41:02,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 08:41:02,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-25 08:41:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-25 08:41:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2018-07-25 08:41:02,818 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 140 [2018-07-25 08:41:02,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:02,818 INFO L472 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2018-07-25 08:41:02,818 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:41:02,818 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2018-07-25 08:41:02,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-25 08:41:02,819 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:02,819 INFO L354 BasicCegarLoop]: trace histogram [46, 46, 45, 1, 1, 1, 1] [2018-07-25 08:41:02,820 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:02,820 INFO L82 PathProgramCache]: Analyzing trace with hash -843219869, now seen corresponding path program 90 times [2018-07-25 08:41:02,820 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:02,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 1081 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:02,953 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:02,953 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:41:02,954 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:41:02,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:41:02,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:41:02,955 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 50 states. [2018-07-25 08:41:03,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:03,137 INFO L93 Difference]: Finished difference Result 150 states and 151 transitions. [2018-07-25 08:41:03,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:41:03,137 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 141 [2018-07-25 08:41:03,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:03,138 INFO L225 Difference]: With dead ends: 150 [2018-07-25 08:41:03,138 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 08:41:03,139 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2162 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:41:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 08:41:03,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2018-07-25 08:41:03,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-25 08:41:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2018-07-25 08:41:03,157 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 141 [2018-07-25 08:41:03,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:03,157 INFO L472 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2018-07-25 08:41:03,157 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:41:03,157 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2018-07-25 08:41:03,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-25 08:41:03,158 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:03,158 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 46, 1, 1, 1, 1] [2018-07-25 08:41:03,159 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:03,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1414590859, now seen corresponding path program 91 times [2018-07-25 08:41:03,159 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:03,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 2162 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:03,382 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:03,382 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:41:03,382 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:41:03,383 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:41:03,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:41:03,384 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand 96 states. [2018-07-25 08:41:03,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:03,954 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2018-07-25 08:41:03,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:41:03,954 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 143 [2018-07-25 08:41:03,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:03,955 INFO L225 Difference]: With dead ends: 242 [2018-07-25 08:41:03,955 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:41:03,956 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3197 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4701, Invalid=15605, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:41:03,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:41:03,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:41:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:41:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-07-25 08:41:03,970 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 143 [2018-07-25 08:41:03,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:03,970 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-07-25 08:41:03,970 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:41:03,970 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-07-25 08:41:03,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:41:03,971 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:03,971 INFO L354 BasicCegarLoop]: trace histogram [47, 47, 46, 1, 1, 1, 1] [2018-07-25 08:41:03,971 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:03,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1112839410, now seen corresponding path program 92 times [2018-07-25 08:41:03,971 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:04,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 1128 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:04,164 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:04,164 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:41:04,165 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:41:04,165 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:41:04,166 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:41:04,166 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 51 states. [2018-07-25 08:41:04,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:04,365 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2018-07-25 08:41:04,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:41:04,365 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 144 [2018-07-25 08:41:04,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:04,367 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:41:04,367 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:41:04,368 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2256 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:41:04,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:41:04,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2018-07-25 08:41:04,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:41:04,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-07-25 08:41:04,395 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 144 [2018-07-25 08:41:04,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:04,395 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-07-25 08:41:04,395 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:41:04,395 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-07-25 08:41:04,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:41:04,396 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:04,397 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 47, 1, 1, 1, 1] [2018-07-25 08:41:04,397 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:04,397 INFO L82 PathProgramCache]: Analyzing trace with hash -8117670, now seen corresponding path program 93 times [2018-07-25 08:41:04,397 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3384 backedges. 2256 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:04,672 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:04,673 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:41:04,673 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:41:04,673 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:41:04,674 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2449, Invalid=7057, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:41:04,674 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 98 states. [2018-07-25 08:41:05,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:05,139 INFO L93 Difference]: Finished difference Result 247 states and 249 transitions. [2018-07-25 08:41:05,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:41:05,139 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 146 [2018-07-25 08:41:05,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:05,141 INFO L225 Difference]: With dead ends: 247 [2018-07-25 08:41:05,141 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 08:41:05,142 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4897, Invalid=16273, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:41:05,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 08:41:05,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-25 08:41:05,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-25 08:41:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2018-07-25 08:41:05,156 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 146 [2018-07-25 08:41:05,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:05,156 INFO L472 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2018-07-25 08:41:05,156 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:41:05,156 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2018-07-25 08:41:05,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-25 08:41:05,157 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:05,157 INFO L354 BasicCegarLoop]: trace histogram [48, 48, 47, 1, 1, 1, 1] [2018-07-25 08:41:05,157 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:05,157 INFO L82 PathProgramCache]: Analyzing trace with hash -118984301, now seen corresponding path program 94 times [2018-07-25 08:41:05,158 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 1176 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:05,361 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:05,361 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:41:05,361 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:41:05,361 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:41:05,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:41:05,362 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand 52 states. [2018-07-25 08:41:05,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:05,530 INFO L93 Difference]: Finished difference Result 156 states and 157 transitions. [2018-07-25 08:41:05,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:41:05,530 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 147 [2018-07-25 08:41:05,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:05,531 INFO L225 Difference]: With dead ends: 156 [2018-07-25 08:41:05,531 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 08:41:05,532 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2352 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:41:05,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 08:41:05,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2018-07-25 08:41:05,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-25 08:41:05,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2018-07-25 08:41:05,545 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 147 [2018-07-25 08:41:05,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:05,546 INFO L472 AbstractCegarLoop]: Abstraction has 150 states and 151 transitions. [2018-07-25 08:41:05,546 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:41:05,546 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 151 transitions. [2018-07-25 08:41:05,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-25 08:41:05,547 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:05,547 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 48, 1, 1, 1, 1] [2018-07-25 08:41:05,547 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:05,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1620269755, now seen corresponding path program 95 times [2018-07-25 08:41:05,547 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 2352 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:05,758 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:05,758 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:41:05,758 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:41:05,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:41:05,759 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2549, Invalid=7351, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:41:05,759 INFO L87 Difference]: Start difference. First operand 150 states and 151 transitions. Second operand 100 states. [2018-07-25 08:41:06,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:06,317 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2018-07-25 08:41:06,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:41:06,317 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 149 [2018-07-25 08:41:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:06,318 INFO L225 Difference]: With dead ends: 252 [2018-07-25 08:41:06,318 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:41:06,320 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3480 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5097, Invalid=16955, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:41:06,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:41:06,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:41:06,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:41:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-07-25 08:41:06,332 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 149 [2018-07-25 08:41:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:06,332 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-07-25 08:41:06,332 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:41:06,332 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-07-25 08:41:06,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:41:06,333 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:06,333 INFO L354 BasicCegarLoop]: trace histogram [49, 49, 48, 1, 1, 1, 1] [2018-07-25 08:41:06,333 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:06,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1622316258, now seen corresponding path program 96 times [2018-07-25 08:41:06,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 1225 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:06,461 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:06,461 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:41:06,461 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:41:06,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:41:06,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:41:06,462 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 53 states. [2018-07-25 08:41:06,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:06,579 INFO L93 Difference]: Finished difference Result 159 states and 160 transitions. [2018-07-25 08:41:06,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:41:06,579 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 150 [2018-07-25 08:41:06,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:06,580 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:41:06,580 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:41:06,581 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2450 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:41:06,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:41:06,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2018-07-25 08:41:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:41:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-07-25 08:41:06,602 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 150 [2018-07-25 08:41:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:06,602 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-07-25 08:41:06,602 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:41:06,602 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-07-25 08:41:06,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:41:06,603 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:06,603 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 49, 1, 1, 1, 1] [2018-07-25 08:41:06,604 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:06,604 INFO L82 PathProgramCache]: Analyzing trace with hash -27138486, now seen corresponding path program 97 times [2018-07-25 08:41:06,604 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 2450 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:06,985 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:06,985 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:41:06,985 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:41:06,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:41:06,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2651, Invalid=7651, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:41:06,987 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 102 states. [2018-07-25 08:41:07,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:07,648 INFO L93 Difference]: Finished difference Result 257 states and 259 transitions. [2018-07-25 08:41:07,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:41:07,648 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 152 [2018-07-25 08:41:07,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:07,649 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:41:07,649 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 08:41:07,651 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3626 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5301, Invalid=17651, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:41:07,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 08:41:07,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-25 08:41:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-25 08:41:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2018-07-25 08:41:07,718 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 152 [2018-07-25 08:41:07,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:07,719 INFO L472 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2018-07-25 08:41:07,719 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:41:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2018-07-25 08:41:07,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-25 08:41:07,719 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:07,719 INFO L354 BasicCegarLoop]: trace histogram [50, 50, 49, 1, 1, 1, 1] [2018-07-25 08:41:07,720 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:07,720 INFO L82 PathProgramCache]: Analyzing trace with hash 810690243, now seen corresponding path program 98 times [2018-07-25 08:41:07,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:07,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 1275 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:07,870 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:07,870 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:41:07,871 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:41:07,871 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:41:07,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:41:07,871 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 54 states. [2018-07-25 08:41:08,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:08,005 INFO L93 Difference]: Finished difference Result 162 states and 163 transitions. [2018-07-25 08:41:08,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:41:08,005 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 153 [2018-07-25 08:41:08,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:08,006 INFO L225 Difference]: With dead ends: 162 [2018-07-25 08:41:08,006 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 08:41:08,007 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2550 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:41:08,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 08:41:08,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2018-07-25 08:41:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-25 08:41:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2018-07-25 08:41:08,029 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 153 [2018-07-25 08:41:08,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:08,029 INFO L472 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2018-07-25 08:41:08,029 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:41:08,029 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2018-07-25 08:41:08,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-25 08:41:08,030 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:08,030 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 50, 1, 1, 1, 1] [2018-07-25 08:41:08,031 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:08,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1684308971, now seen corresponding path program 99 times [2018-07-25 08:41:08,031 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3825 backedges. 2550 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:08,335 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:08,336 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:41:08,336 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:41:08,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:41:08,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:41:08,337 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand 104 states. [2018-07-25 08:41:08,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:08,953 INFO L93 Difference]: Finished difference Result 262 states and 264 transitions. [2018-07-25 08:41:08,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:41:08,953 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 155 [2018-07-25 08:41:08,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:08,954 INFO L225 Difference]: With dead ends: 262 [2018-07-25 08:41:08,954 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:41:08,956 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5509, Invalid=18361, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:41:08,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:41:08,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:41:08,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:41:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2018-07-25 08:41:08,976 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 155 [2018-07-25 08:41:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:08,976 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2018-07-25 08:41:08,976 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:41:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2018-07-25 08:41:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:41:08,977 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:08,977 INFO L354 BasicCegarLoop]: trace histogram [51, 51, 50, 1, 1, 1, 1] [2018-07-25 08:41:08,978 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:08,978 INFO L82 PathProgramCache]: Analyzing trace with hash -909949742, now seen corresponding path program 100 times [2018-07-25 08:41:08,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 1326 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:09,147 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:09,147 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:41:09,148 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:41:09,148 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:41:09,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:41:09,148 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 55 states. [2018-07-25 08:41:09,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:09,322 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2018-07-25 08:41:09,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:41:09,322 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 156 [2018-07-25 08:41:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:09,323 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:41:09,323 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:41:09,325 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2652 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:41:09,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:41:09,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-07-25 08:41:09,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:41:09,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-07-25 08:41:09,346 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 156 [2018-07-25 08:41:09,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:09,346 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-07-25 08:41:09,346 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:41:09,347 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-07-25 08:41:09,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:41:09,347 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:09,348 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 51, 1, 1, 1, 1] [2018-07-25 08:41:09,348 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:09,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1711692346, now seen corresponding path program 101 times [2018-07-25 08:41:09,348 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3978 backedges. 2652 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:09,639 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:09,640 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:41:09,640 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:41:09,641 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:41:09,641 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2861, Invalid=8269, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:41:09,642 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 106 states. [2018-07-25 08:41:10,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:10,403 INFO L93 Difference]: Finished difference Result 267 states and 269 transitions. [2018-07-25 08:41:10,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:41:10,403 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 158 [2018-07-25 08:41:10,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:10,404 INFO L225 Difference]: With dead ends: 267 [2018-07-25 08:41:10,404 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 08:41:10,406 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3927 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5721, Invalid=19085, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:41:10,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 08:41:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-25 08:41:10,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-25 08:41:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2018-07-25 08:41:10,423 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 158 [2018-07-25 08:41:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:10,423 INFO L472 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2018-07-25 08:41:10,423 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:41:10,423 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2018-07-25 08:41:10,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-25 08:41:10,424 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:10,424 INFO L354 BasicCegarLoop]: trace histogram [52, 52, 51, 1, 1, 1, 1] [2018-07-25 08:41:10,424 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:10,424 INFO L82 PathProgramCache]: Analyzing trace with hash -208102413, now seen corresponding path program 102 times [2018-07-25 08:41:10,425 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:10,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 1378 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:10,600 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:10,600 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:41:10,601 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:41:10,601 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:41:10,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:41:10,601 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand 56 states. [2018-07-25 08:41:10,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:10,755 INFO L93 Difference]: Finished difference Result 168 states and 169 transitions. [2018-07-25 08:41:10,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:41:10,755 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 159 [2018-07-25 08:41:10,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:10,755 INFO L225 Difference]: With dead ends: 168 [2018-07-25 08:41:10,756 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 08:41:10,756 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2756 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:41:10,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 08:41:10,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2018-07-25 08:41:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-25 08:41:10,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2018-07-25 08:41:10,775 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 159 [2018-07-25 08:41:10,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:10,775 INFO L472 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2018-07-25 08:41:10,775 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:41:10,775 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2018-07-25 08:41:10,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-25 08:41:10,776 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:10,776 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 52, 1, 1, 1, 1] [2018-07-25 08:41:10,776 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:10,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1877110043, now seen corresponding path program 103 times [2018-07-25 08:41:10,776 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4134 backedges. 2756 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:11,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:11,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:41:11,174 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:41:11,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:41:11,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2969, Invalid=8587, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:41:11,176 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand 108 states. [2018-07-25 08:41:11,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:11,668 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2018-07-25 08:41:11,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:41:11,668 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 161 [2018-07-25 08:41:11,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:11,669 INFO L225 Difference]: With dead ends: 272 [2018-07-25 08:41:11,669 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:41:11,670 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5937, Invalid=19823, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:41:11,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:41:11,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:41:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:41:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-07-25 08:41:11,689 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 161 [2018-07-25 08:41:11,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:11,689 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-07-25 08:41:11,689 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:41:11,689 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-07-25 08:41:11,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:41:11,690 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:11,690 INFO L354 BasicCegarLoop]: trace histogram [53, 53, 52, 1, 1, 1, 1] [2018-07-25 08:41:11,690 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:11,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1055958210, now seen corresponding path program 104 times [2018-07-25 08:41:11,690 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:11,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 1431 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:11,861 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:11,862 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:41:11,862 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:41:11,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:41:11,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:41:11,862 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 57 states. [2018-07-25 08:41:12,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:12,010 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2018-07-25 08:41:12,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:41:12,011 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 162 [2018-07-25 08:41:12,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:12,012 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:41:12,012 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:41:12,013 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2862 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:41:12,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:41:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2018-07-25 08:41:12,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:41:12,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-07-25 08:41:12,034 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 162 [2018-07-25 08:41:12,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:12,034 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-07-25 08:41:12,034 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:41:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-07-25 08:41:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:41:12,035 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:12,035 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 53, 1, 1, 1, 1] [2018-07-25 08:41:12,036 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:12,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1163623978, now seen corresponding path program 105 times [2018-07-25 08:41:12,036 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:12,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4293 backedges. 2862 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:12,335 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:12,335 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:41:12,335 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:41:12,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:41:12,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=8911, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:41:12,337 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 110 states. [2018-07-25 08:41:13,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:13,168 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2018-07-25 08:41:13,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:41:13,169 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 164 [2018-07-25 08:41:13,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:13,169 INFO L225 Difference]: With dead ends: 277 [2018-07-25 08:41:13,170 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 08:41:13,172 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4240 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6157, Invalid=20575, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:41:13,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 08:41:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-25 08:41:13,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-25 08:41:13,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2018-07-25 08:41:13,190 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 164 [2018-07-25 08:41:13,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:13,190 INFO L472 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2018-07-25 08:41:13,190 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:41:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2018-07-25 08:41:13,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-25 08:41:13,191 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:13,191 INFO L354 BasicCegarLoop]: trace histogram [54, 54, 53, 1, 1, 1, 1] [2018-07-25 08:41:13,191 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:13,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1931882205, now seen corresponding path program 106 times [2018-07-25 08:41:13,192 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 1485 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:13,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:13,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:41:13,366 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:41:13,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:41:13,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:41:13,367 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand 58 states. [2018-07-25 08:41:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:13,533 INFO L93 Difference]: Finished difference Result 174 states and 175 transitions. [2018-07-25 08:41:13,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:41:13,534 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 165 [2018-07-25 08:41:13,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:13,534 INFO L225 Difference]: With dead ends: 174 [2018-07-25 08:41:13,535 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 08:41:13,536 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2970 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:41:13,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 08:41:13,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2018-07-25 08:41:13,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-25 08:41:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2018-07-25 08:41:13,558 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 165 [2018-07-25 08:41:13,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:13,558 INFO L472 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2018-07-25 08:41:13,558 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:41:13,558 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2018-07-25 08:41:13,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-25 08:41:13,559 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:13,559 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 54, 1, 1, 1, 1] [2018-07-25 08:41:13,559 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:13,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1112861109, now seen corresponding path program 107 times [2018-07-25 08:41:13,560 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4455 backedges. 2970 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:13,853 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:13,853 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:41:13,853 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:41:13,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:41:13,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3191, Invalid=9241, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:41:13,854 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand 112 states. [2018-07-25 08:41:14,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:14,721 INFO L93 Difference]: Finished difference Result 282 states and 284 transitions. [2018-07-25 08:41:14,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:41:14,721 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 167 [2018-07-25 08:41:14,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:14,721 INFO L225 Difference]: With dead ends: 282 [2018-07-25 08:41:14,721 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:41:14,724 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4401 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6381, Invalid=21341, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:41:14,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:41:14,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:41:14,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:41:14,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2018-07-25 08:41:14,745 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 167 [2018-07-25 08:41:14,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:14,745 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2018-07-25 08:41:14,745 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:41:14,745 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2018-07-25 08:41:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:41:14,745 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:14,746 INFO L354 BasicCegarLoop]: trace histogram [55, 55, 54, 1, 1, 1, 1] [2018-07-25 08:41:14,746 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:14,746 INFO L82 PathProgramCache]: Analyzing trace with hash -2094746446, now seen corresponding path program 108 times [2018-07-25 08:41:14,746 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 1540 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:14,987 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:14,987 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:41:14,987 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:41:14,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:41:14,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:41:14,988 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 59 states. [2018-07-25 08:41:15,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:15,150 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2018-07-25 08:41:15,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:41:15,150 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 168 [2018-07-25 08:41:15,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:15,151 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:41:15,151 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:41:15,152 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:41:15,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:41:15,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2018-07-25 08:41:15,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:41:15,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-07-25 08:41:15,173 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 168 [2018-07-25 08:41:15,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:15,173 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-07-25 08:41:15,173 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:41:15,173 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-07-25 08:41:15,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:41:15,174 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:15,174 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 55, 1, 1, 1, 1] [2018-07-25 08:41:15,174 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:15,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1288393242, now seen corresponding path program 109 times [2018-07-25 08:41:15,174 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 3080 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:15,467 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:15,467 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:41:15,467 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:41:15,468 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:41:15,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3305, Invalid=9577, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:41:15,469 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 114 states. [2018-07-25 08:41:16,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:16,327 INFO L93 Difference]: Finished difference Result 287 states and 289 transitions. [2018-07-25 08:41:16,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:41:16,328 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 170 [2018-07-25 08:41:16,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:16,328 INFO L225 Difference]: With dead ends: 287 [2018-07-25 08:41:16,328 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 08:41:16,331 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4565 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6609, Invalid=22121, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:41:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 08:41:16,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-25 08:41:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-25 08:41:16,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 173 transitions. [2018-07-25 08:41:16,347 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 173 transitions. Word has length 170 [2018-07-25 08:41:16,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:16,347 INFO L472 AbstractCegarLoop]: Abstraction has 172 states and 173 transitions. [2018-07-25 08:41:16,347 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:41:16,347 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 173 transitions. [2018-07-25 08:41:16,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-25 08:41:16,348 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:16,348 INFO L354 BasicCegarLoop]: trace histogram [56, 56, 55, 1, 1, 1, 1] [2018-07-25 08:41:16,348 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:16,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1330395565, now seen corresponding path program 110 times [2018-07-25 08:41:16,348 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 1596 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:16,510 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:16,511 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:41:16,511 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:41:16,511 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:41:16,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:41:16,512 INFO L87 Difference]: Start difference. First operand 172 states and 173 transitions. Second operand 60 states. [2018-07-25 08:41:16,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:16,656 INFO L93 Difference]: Finished difference Result 180 states and 181 transitions. [2018-07-25 08:41:16,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:41:16,656 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 171 [2018-07-25 08:41:16,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:16,657 INFO L225 Difference]: With dead ends: 180 [2018-07-25 08:41:16,657 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 08:41:16,658 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3192 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:41:16,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 08:41:16,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2018-07-25 08:41:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-25 08:41:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2018-07-25 08:41:16,673 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 171 [2018-07-25 08:41:16,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:16,673 INFO L472 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2018-07-25 08:41:16,673 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:41:16,673 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2018-07-25 08:41:16,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-25 08:41:16,673 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:16,673 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 56, 1, 1, 1, 1] [2018-07-25 08:41:16,674 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:16,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1390182267, now seen corresponding path program 111 times [2018-07-25 08:41:16,674 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:16,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4788 backedges. 3192 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:16,958 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:16,959 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:41:16,959 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:41:16,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:41:16,960 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=9919, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:41:16,960 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand 116 states. [2018-07-25 08:41:17,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:17,806 INFO L93 Difference]: Finished difference Result 292 states and 294 transitions. [2018-07-25 08:41:17,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:41:17,806 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 173 [2018-07-25 08:41:17,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:17,807 INFO L225 Difference]: With dead ends: 292 [2018-07-25 08:41:17,807 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:41:17,808 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4732 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6841, Invalid=22915, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:41:17,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:41:17,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:41:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:41:17,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-07-25 08:41:17,826 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 173 [2018-07-25 08:41:17,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:17,826 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-07-25 08:41:17,826 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:41:17,826 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-07-25 08:41:17,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:41:17,827 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:17,827 INFO L354 BasicCegarLoop]: trace histogram [57, 57, 56, 1, 1, 1, 1] [2018-07-25 08:41:17,827 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:17,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1161202526, now seen corresponding path program 112 times [2018-07-25 08:41:17,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 1653 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:18,002 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:18,002 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:41:18,003 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:41:18,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:41:18,003 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:41:18,003 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 61 states. [2018-07-25 08:41:18,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:18,184 INFO L93 Difference]: Finished difference Result 183 states and 184 transitions. [2018-07-25 08:41:18,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:41:18,185 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 174 [2018-07-25 08:41:18,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:18,185 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:41:18,185 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:41:18,187 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3306 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:41:18,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:41:18,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 177. [2018-07-25 08:41:18,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:41:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-07-25 08:41:18,207 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 174 [2018-07-25 08:41:18,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:18,207 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-07-25 08:41:18,207 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:41:18,207 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-07-25 08:41:18,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:41:18,207 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:18,207 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 57, 1, 1, 1, 1] [2018-07-25 08:41:18,208 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:18,208 INFO L82 PathProgramCache]: Analyzing trace with hash 775935498, now seen corresponding path program 113 times [2018-07-25 08:41:18,208 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:18,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4959 backedges. 3306 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:18,595 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:18,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:41:18,596 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:41:18,596 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:41:18,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3539, Invalid=10267, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:41:18,597 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 118 states. [2018-07-25 08:41:19,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:19,529 INFO L93 Difference]: Finished difference Result 297 states and 299 transitions. [2018-07-25 08:41:19,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:41:19,529 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 176 [2018-07-25 08:41:19,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:19,530 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:41:19,530 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 08:41:19,532 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4902 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7077, Invalid=23723, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:41:19,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 08:41:19,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-25 08:41:19,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-25 08:41:19,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2018-07-25 08:41:19,548 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 176 [2018-07-25 08:41:19,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:19,548 INFO L472 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions. [2018-07-25 08:41:19,548 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:41:19,548 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions. [2018-07-25 08:41:19,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-25 08:41:19,548 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:19,548 INFO L354 BasicCegarLoop]: trace histogram [58, 58, 57, 1, 1, 1, 1] [2018-07-25 08:41:19,549 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:19,549 INFO L82 PathProgramCache]: Analyzing trace with hash 507804547, now seen corresponding path program 114 times [2018-07-25 08:41:19,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5017 backedges. 1711 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:19,788 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:19,789 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:41:19,789 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:41:19,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:41:19,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:41:19,790 INFO L87 Difference]: Start difference. First operand 178 states and 179 transitions. Second operand 62 states. [2018-07-25 08:41:19,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:19,950 INFO L93 Difference]: Finished difference Result 186 states and 187 transitions. [2018-07-25 08:41:19,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:41:19,950 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 177 [2018-07-25 08:41:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:19,951 INFO L225 Difference]: With dead ends: 186 [2018-07-25 08:41:19,951 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 08:41:19,952 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3422 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:41:19,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 08:41:19,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 180. [2018-07-25 08:41:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-25 08:41:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 181 transitions. [2018-07-25 08:41:19,967 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 181 transitions. Word has length 177 [2018-07-25 08:41:19,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:19,967 INFO L472 AbstractCegarLoop]: Abstraction has 180 states and 181 transitions. [2018-07-25 08:41:19,967 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:41:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 181 transitions. [2018-07-25 08:41:19,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-25 08:41:19,968 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:19,968 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 58, 1, 1, 1, 1] [2018-07-25 08:41:19,968 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:19,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1626036053, now seen corresponding path program 115 times [2018-07-25 08:41:19,968 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5133 backedges. 3422 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:20,255 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:20,255 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:41:20,255 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:41:20,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:41:20,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=10621, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:41:20,257 INFO L87 Difference]: Start difference. First operand 180 states and 181 transitions. Second operand 120 states. [2018-07-25 08:41:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:20,973 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2018-07-25 08:41:20,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:41:20,973 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 179 [2018-07-25 08:41:20,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:20,974 INFO L225 Difference]: With dead ends: 302 [2018-07-25 08:41:20,974 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:41:20,976 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5075 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7317, Invalid=24545, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:41:20,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:41:20,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:41:20,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:41:20,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2018-07-25 08:41:20,999 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 179 [2018-07-25 08:41:20,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:20,999 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2018-07-25 08:41:20,999 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:41:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2018-07-25 08:41:21,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:41:21,000 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:21,000 INFO L354 BasicCegarLoop]: trace histogram [59, 59, 58, 1, 1, 1, 1] [2018-07-25 08:41:21,000 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:21,000 INFO L82 PathProgramCache]: Analyzing trace with hash -876026734, now seen corresponding path program 116 times [2018-07-25 08:41:21,000 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:21,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 1770 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:21,190 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:21,190 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:41:21,191 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:41:21,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:41:21,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:41:21,192 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 63 states. [2018-07-25 08:41:21,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:21,368 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2018-07-25 08:41:21,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:41:21,368 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 180 [2018-07-25 08:41:21,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:21,369 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:41:21,369 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:41:21,370 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3540 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:41:21,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:41:21,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2018-07-25 08:41:21,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:41:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-07-25 08:41:21,394 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 180 [2018-07-25 08:41:21,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:21,395 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-07-25 08:41:21,395 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:41:21,395 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-07-25 08:41:21,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:41:21,396 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:21,396 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 59, 1, 1, 1, 1] [2018-07-25 08:41:21,396 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:21,396 INFO L82 PathProgramCache]: Analyzing trace with hash -48035334, now seen corresponding path program 117 times [2018-07-25 08:41:21,397 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5310 backedges. 3540 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:21,695 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:21,695 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:41:21,696 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:41:21,696 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:41:21,697 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=10981, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:41:21,697 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 122 states. [2018-07-25 08:41:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:22,347 INFO L93 Difference]: Finished difference Result 307 states and 309 transitions. [2018-07-25 08:41:22,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:41:22,348 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 182 [2018-07-25 08:41:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:22,348 INFO L225 Difference]: With dead ends: 307 [2018-07-25 08:41:22,348 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 08:41:22,351 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5251 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7561, Invalid=25381, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:41:22,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 08:41:22,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-25 08:41:22,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-25 08:41:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2018-07-25 08:41:22,376 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 182 [2018-07-25 08:41:22,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:22,377 INFO L472 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2018-07-25 08:41:22,377 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:41:22,377 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2018-07-25 08:41:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-25 08:41:22,378 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:22,378 INFO L354 BasicCegarLoop]: trace histogram [60, 60, 59, 1, 1, 1, 1] [2018-07-25 08:41:22,378 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:22,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1059713203, now seen corresponding path program 118 times [2018-07-25 08:41:22,378 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 1830 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:22,593 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:22,593 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:41:22,593 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:41:22,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:41:22,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:41:22,594 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand 64 states. [2018-07-25 08:41:22,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:22,825 INFO L93 Difference]: Finished difference Result 192 states and 193 transitions. [2018-07-25 08:41:22,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:41:22,825 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 183 [2018-07-25 08:41:22,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:22,825 INFO L225 Difference]: With dead ends: 192 [2018-07-25 08:41:22,826 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 08:41:22,827 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3660 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:41:22,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 08:41:22,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 186. [2018-07-25 08:41:22,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-25 08:41:22,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2018-07-25 08:41:22,845 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 183 [2018-07-25 08:41:22,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:22,845 INFO L472 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2018-07-25 08:41:22,846 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:41:22,846 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2018-07-25 08:41:22,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-25 08:41:22,846 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:22,846 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 60, 1, 1, 1, 1] [2018-07-25 08:41:22,847 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:22,847 INFO L82 PathProgramCache]: Analyzing trace with hash 477204955, now seen corresponding path program 119 times [2018-07-25 08:41:22,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5490 backedges. 3660 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:23,166 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:23,166 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:41:23,167 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:41:23,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:41:23,168 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3905, Invalid=11347, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:41:23,168 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand 124 states. [2018-07-25 08:41:23,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:23,863 INFO L93 Difference]: Finished difference Result 312 states and 314 transitions. [2018-07-25 08:41:23,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:41:23,863 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 185 [2018-07-25 08:41:23,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:23,864 INFO L225 Difference]: With dead ends: 312 [2018-07-25 08:41:23,864 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:41:23,867 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5430 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7809, Invalid=26231, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:41:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:41:23,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:41:23,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:41:23,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-07-25 08:41:23,893 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 185 [2018-07-25 08:41:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:23,894 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-07-25 08:41:23,894 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:41:23,894 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-07-25 08:41:23,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:41:23,895 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:23,895 INFO L354 BasicCegarLoop]: trace histogram [61, 61, 60, 1, 1, 1, 1] [2018-07-25 08:41:23,895 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:23,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1114831742, now seen corresponding path program 120 times [2018-07-25 08:41:23,895 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 1891 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:24,126 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:24,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:41:24,126 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:41:24,126 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:41:24,126 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:41:24,127 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 65 states. [2018-07-25 08:41:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:24,289 INFO L93 Difference]: Finished difference Result 195 states and 196 transitions. [2018-07-25 08:41:24,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:41:24,289 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 186 [2018-07-25 08:41:24,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:24,289 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:41:24,289 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:41:24,290 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3782 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:41:24,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:41:24,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2018-07-25 08:41:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:41:24,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2018-07-25 08:41:24,307 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 186 [2018-07-25 08:41:24,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:24,307 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2018-07-25 08:41:24,307 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:41:24,307 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2018-07-25 08:41:24,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:41:24,307 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:24,307 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 61, 1, 1, 1, 1] [2018-07-25 08:41:24,308 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:24,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1906381334, now seen corresponding path program 121 times [2018-07-25 08:41:24,308 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:24,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5673 backedges. 3782 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:24,624 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:24,624 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:41:24,625 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:41:24,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:41:24,626 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4031, Invalid=11719, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:41:24,626 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 126 states. [2018-07-25 08:41:25,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:25,340 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2018-07-25 08:41:25,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:41:25,340 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 188 [2018-07-25 08:41:25,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:25,340 INFO L225 Difference]: With dead ends: 317 [2018-07-25 08:41:25,340 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 08:41:25,343 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5612 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8061, Invalid=27095, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:41:25,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 08:41:25,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-25 08:41:25,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-25 08:41:25,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 191 transitions. [2018-07-25 08:41:25,360 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 191 transitions. Word has length 188 [2018-07-25 08:41:25,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:25,360 INFO L472 AbstractCegarLoop]: Abstraction has 190 states and 191 transitions. [2018-07-25 08:41:25,360 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:41:25,360 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 191 transitions. [2018-07-25 08:41:25,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-25 08:41:25,361 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:25,361 INFO L354 BasicCegarLoop]: trace histogram [62, 62, 61, 1, 1, 1, 1] [2018-07-25 08:41:25,361 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:25,361 INFO L82 PathProgramCache]: Analyzing trace with hash -947771933, now seen corresponding path program 122 times [2018-07-25 08:41:25,361 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 1953 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:25,558 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:25,558 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:41:25,558 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:41:25,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:41:25,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:41:25,559 INFO L87 Difference]: Start difference. First operand 190 states and 191 transitions. Second operand 66 states. [2018-07-25 08:41:25,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:25,744 INFO L93 Difference]: Finished difference Result 198 states and 199 transitions. [2018-07-25 08:41:25,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:41:25,745 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 189 [2018-07-25 08:41:25,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:25,745 INFO L225 Difference]: With dead ends: 198 [2018-07-25 08:41:25,745 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 08:41:25,746 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3906 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:41:25,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 08:41:25,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 192. [2018-07-25 08:41:25,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-25 08:41:25,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2018-07-25 08:41:25,766 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 189 [2018-07-25 08:41:25,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:25,766 INFO L472 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2018-07-25 08:41:25,766 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:41:25,767 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2018-07-25 08:41:25,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-25 08:41:25,767 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:25,768 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 62, 1, 1, 1, 1] [2018-07-25 08:41:25,768 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:25,768 INFO L82 PathProgramCache]: Analyzing trace with hash -275694837, now seen corresponding path program 123 times [2018-07-25 08:41:25,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:26,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5859 backedges. 3906 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:26,133 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:26,134 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:41:26,134 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:41:26,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:41:26,135 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4159, Invalid=12097, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:41:26,136 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand 128 states. [2018-07-25 08:41:27,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:27,283 INFO L93 Difference]: Finished difference Result 322 states and 324 transitions. [2018-07-25 08:41:27,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:41:27,283 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 191 [2018-07-25 08:41:27,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:27,284 INFO L225 Difference]: With dead ends: 322 [2018-07-25 08:41:27,284 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:41:27,285 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5797 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=8317, Invalid=27973, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:41:27,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:41:27,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:41:27,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:41:27,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2018-07-25 08:41:27,312 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 191 [2018-07-25 08:41:27,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:27,313 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2018-07-25 08:41:27,313 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:41:27,313 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2018-07-25 08:41:27,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:41:27,314 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:27,314 INFO L354 BasicCegarLoop]: trace histogram [63, 63, 62, 1, 1, 1, 1] [2018-07-25 08:41:27,314 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:27,314 INFO L82 PathProgramCache]: Analyzing trace with hash 419419250, now seen corresponding path program 124 times [2018-07-25 08:41:27,314 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 2016 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:27,522 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:27,522 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:41:27,522 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:41:27,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:41:27,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:41:27,523 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand 67 states. [2018-07-25 08:41:27,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:27,762 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2018-07-25 08:41:27,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:41:27,762 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 192 [2018-07-25 08:41:27,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:27,763 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:41:27,763 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:41:27,764 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4032 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:41:27,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:41:27,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2018-07-25 08:41:27,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:41:27,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-07-25 08:41:27,782 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 192 [2018-07-25 08:41:27,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:27,782 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-07-25 08:41:27,782 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:41:27,782 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-07-25 08:41:27,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:41:27,782 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:27,782 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 63, 1, 1, 1, 1] [2018-07-25 08:41:27,783 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:27,783 INFO L82 PathProgramCache]: Analyzing trace with hash -664960550, now seen corresponding path program 125 times [2018-07-25 08:41:27,783 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6048 backedges. 4032 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:28,106 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:28,106 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:41:28,106 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:41:28,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:41:28,108 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4289, Invalid=12481, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:41:28,108 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 130 states. [2018-07-25 08:41:28,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:28,736 INFO L93 Difference]: Finished difference Result 327 states and 329 transitions. [2018-07-25 08:41:28,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:41:28,736 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 194 [2018-07-25 08:41:28,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:28,736 INFO L225 Difference]: With dead ends: 327 [2018-07-25 08:41:28,736 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 08:41:28,738 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5985 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8577, Invalid=28865, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:41:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 08:41:28,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-25 08:41:28,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-25 08:41:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 197 transitions. [2018-07-25 08:41:28,760 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 197 transitions. Word has length 194 [2018-07-25 08:41:28,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:28,760 INFO L472 AbstractCegarLoop]: Abstraction has 196 states and 197 transitions. [2018-07-25 08:41:28,760 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:41:28,760 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 197 transitions. [2018-07-25 08:41:28,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-25 08:41:28,761 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:28,761 INFO L354 BasicCegarLoop]: trace histogram [64, 64, 63, 1, 1, 1, 1] [2018-07-25 08:41:28,762 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:28,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1441471251, now seen corresponding path program 126 times [2018-07-25 08:41:28,762 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6112 backedges. 2080 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:28,990 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:28,990 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:41:28,990 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:41:28,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:41:28,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:41:28,991 INFO L87 Difference]: Start difference. First operand 196 states and 197 transitions. Second operand 68 states. [2018-07-25 08:41:29,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:29,211 INFO L93 Difference]: Finished difference Result 204 states and 205 transitions. [2018-07-25 08:41:29,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:41:29,212 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 195 [2018-07-25 08:41:29,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:29,213 INFO L225 Difference]: With dead ends: 204 [2018-07-25 08:41:29,213 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 08:41:29,214 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4160 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:41:29,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 08:41:29,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 198. [2018-07-25 08:41:29,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 08:41:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2018-07-25 08:41:29,244 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 195 [2018-07-25 08:41:29,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:29,245 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2018-07-25 08:41:29,245 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:41:29,245 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2018-07-25 08:41:29,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-25 08:41:29,246 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:29,246 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 64, 1, 1, 1, 1] [2018-07-25 08:41:29,246 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:29,246 INFO L82 PathProgramCache]: Analyzing trace with hash -2020498373, now seen corresponding path program 127 times [2018-07-25 08:41:29,247 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6240 backedges. 4160 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:29,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:29,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:41:29,616 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:41:29,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:41:29,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4421, Invalid=12871, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:41:29,618 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand 132 states. [2018-07-25 08:41:30,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:30,329 INFO L93 Difference]: Finished difference Result 332 states and 334 transitions. [2018-07-25 08:41:30,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:41:30,329 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 197 [2018-07-25 08:41:30,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:30,330 INFO L225 Difference]: With dead ends: 332 [2018-07-25 08:41:30,330 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:41:30,332 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8841, Invalid=29771, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:41:30,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:41:30,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 08:41:30,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:41:30,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-07-25 08:41:30,361 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 197 [2018-07-25 08:41:30,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:30,362 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-07-25 08:41:30,362 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:41:30,362 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-07-25 08:41:30,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:41:30,364 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:30,365 INFO L354 BasicCegarLoop]: trace histogram [65, 65, 64, 1, 1, 1, 1] [2018-07-25 08:41:30,365 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:30,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1217090658, now seen corresponding path program 128 times [2018-07-25 08:41:30,365 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:30,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 2145 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:30,649 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:30,649 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:41:30,649 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:41:30,649 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:41:30,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:41:30,650 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 69 states. [2018-07-25 08:41:30,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:30,848 INFO L93 Difference]: Finished difference Result 207 states and 208 transitions. [2018-07-25 08:41:30,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:41:30,848 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 198 [2018-07-25 08:41:30,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:30,848 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:41:30,848 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:41:30,850 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4290 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:41:30,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:41:30,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 201. [2018-07-25 08:41:30,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:41:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2018-07-25 08:41:30,873 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 198 [2018-07-25 08:41:30,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:30,874 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2018-07-25 08:41:30,874 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:41:30,874 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2018-07-25 08:41:30,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:41:30,875 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:30,875 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 65, 1, 1, 1, 1] [2018-07-25 08:41:30,875 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:30,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1393083850, now seen corresponding path program 129 times [2018-07-25 08:41:30,875 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6435 backedges. 4290 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:31,335 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:31,335 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:41:31,335 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:41:31,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:41:31,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4555, Invalid=13267, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:41:31,337 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 134 states. [2018-07-25 08:41:32,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:32,104 INFO L93 Difference]: Finished difference Result 337 states and 339 transitions. [2018-07-25 08:41:32,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:41:32,104 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 200 [2018-07-25 08:41:32,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:32,105 INFO L225 Difference]: With dead ends: 337 [2018-07-25 08:41:32,105 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 08:41:32,107 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6370 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9109, Invalid=30691, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:41:32,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 08:41:32,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-25 08:41:32,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-25 08:41:32,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2018-07-25 08:41:32,126 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 200 [2018-07-25 08:41:32,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:32,126 INFO L472 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2018-07-25 08:41:32,126 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:41:32,127 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2018-07-25 08:41:32,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-25 08:41:32,127 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:32,127 INFO L354 BasicCegarLoop]: trace histogram [66, 66, 65, 1, 1, 1, 1] [2018-07-25 08:41:32,127 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:32,128 INFO L82 PathProgramCache]: Analyzing trace with hash 327340099, now seen corresponding path program 130 times [2018-07-25 08:41:32,128 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 2211 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:32,348 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:32,348 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:41:32,348 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:41:32,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:41:32,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:41:32,349 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand 70 states. [2018-07-25 08:41:32,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:32,543 INFO L93 Difference]: Finished difference Result 210 states and 211 transitions. [2018-07-25 08:41:32,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:41:32,543 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 201 [2018-07-25 08:41:32,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:32,544 INFO L225 Difference]: With dead ends: 210 [2018-07-25 08:41:32,544 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 08:41:32,545 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4422 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:41:32,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 08:41:32,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2018-07-25 08:41:32,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-25 08:41:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 205 transitions. [2018-07-25 08:41:32,563 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 205 transitions. Word has length 201 [2018-07-25 08:41:32,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:32,564 INFO L472 AbstractCegarLoop]: Abstraction has 204 states and 205 transitions. [2018-07-25 08:41:32,564 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:41:32,564 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 205 transitions. [2018-07-25 08:41:32,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-25 08:41:32,565 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:32,565 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 66, 1, 1, 1, 1] [2018-07-25 08:41:32,565 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:32,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1041288555, now seen corresponding path program 131 times [2018-07-25 08:41:32,565 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:32,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6633 backedges. 4422 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:32,939 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:32,939 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:41:32,939 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:41:32,939 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:41:32,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4691, Invalid=13669, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:41:32,940 INFO L87 Difference]: Start difference. First operand 204 states and 205 transitions. Second operand 136 states. [2018-07-25 08:41:33,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:33,780 INFO L93 Difference]: Finished difference Result 342 states and 344 transitions. [2018-07-25 08:41:33,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:41:33,780 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 203 [2018-07-25 08:41:33,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:33,781 INFO L225 Difference]: With dead ends: 342 [2018-07-25 08:41:33,781 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:41:33,783 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9381, Invalid=31625, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:41:33,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:41:33,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:41:33,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:41:33,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2018-07-25 08:41:33,809 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 203 [2018-07-25 08:41:33,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:33,809 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2018-07-25 08:41:33,809 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:41:33,809 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2018-07-25 08:41:33,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:41:33,809 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:33,810 INFO L354 BasicCegarLoop]: trace histogram [67, 67, 66, 1, 1, 1, 1] [2018-07-25 08:41:33,810 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:33,810 INFO L82 PathProgramCache]: Analyzing trace with hash -132545454, now seen corresponding path program 132 times [2018-07-25 08:41:33,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6700 backedges. 2278 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:34,083 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:34,084 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:41:34,084 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:41:34,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:41:34,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:41:34,085 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand 71 states. [2018-07-25 08:41:34,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:34,304 INFO L93 Difference]: Finished difference Result 213 states and 214 transitions. [2018-07-25 08:41:34,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:41:34,304 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 204 [2018-07-25 08:41:34,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:34,305 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:41:34,305 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:41:34,306 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4556 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:41:34,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:41:34,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2018-07-25 08:41:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:41:34,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-07-25 08:41:34,335 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 204 [2018-07-25 08:41:34,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:34,335 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-07-25 08:41:34,336 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:41:34,336 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-07-25 08:41:34,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:41:34,336 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:34,337 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 67, 1, 1, 1, 1] [2018-07-25 08:41:34,337 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:34,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1472903610, now seen corresponding path program 133 times [2018-07-25 08:41:34,337 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6834 backedges. 4556 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:34,730 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:34,730 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:41:34,730 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:41:34,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:41:34,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4829, Invalid=14077, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:41:34,732 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 138 states. [2018-07-25 08:41:35,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:35,250 INFO L93 Difference]: Finished difference Result 347 states and 349 transitions. [2018-07-25 08:41:35,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:41:35,251 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 206 [2018-07-25 08:41:35,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:35,251 INFO L225 Difference]: With dead ends: 347 [2018-07-25 08:41:35,252 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 08:41:35,253 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6767 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9657, Invalid=32573, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:41:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 08:41:35,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-25 08:41:35,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-25 08:41:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2018-07-25 08:41:35,276 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 206 [2018-07-25 08:41:35,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:35,276 INFO L472 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2018-07-25 08:41:35,277 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:41:35,277 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2018-07-25 08:41:35,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-25 08:41:35,278 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:35,278 INFO L354 BasicCegarLoop]: trace histogram [68, 68, 67, 1, 1, 1, 1] [2018-07-25 08:41:35,278 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:35,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1407665523, now seen corresponding path program 134 times [2018-07-25 08:41:35,278 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 2346 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:35,605 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:35,605 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:41:35,606 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:41:35,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:41:35,606 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:41:35,607 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand 72 states. [2018-07-25 08:41:35,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:35,841 INFO L93 Difference]: Finished difference Result 216 states and 217 transitions. [2018-07-25 08:41:35,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:41:35,841 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 207 [2018-07-25 08:41:35,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:35,842 INFO L225 Difference]: With dead ends: 216 [2018-07-25 08:41:35,842 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 08:41:35,843 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4692 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:41:35,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 08:41:35,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 210. [2018-07-25 08:41:35,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-25 08:41:35,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 211 transitions. [2018-07-25 08:41:35,863 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 211 transitions. Word has length 207 [2018-07-25 08:41:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:35,863 INFO L472 AbstractCegarLoop]: Abstraction has 210 states and 211 transitions. [2018-07-25 08:41:35,864 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:41:35,864 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 211 transitions. [2018-07-25 08:41:35,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-25 08:41:35,864 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:35,864 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 68, 1, 1, 1, 1] [2018-07-25 08:41:35,865 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:35,865 INFO L82 PathProgramCache]: Analyzing trace with hash -148064613, now seen corresponding path program 135 times [2018-07-25 08:41:35,865 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7038 backedges. 4692 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:36,242 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:36,242 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:41:36,243 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:41:36,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:41:36,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4969, Invalid=14491, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:41:36,245 INFO L87 Difference]: Start difference. First operand 210 states and 211 transitions. Second operand 140 states. [2018-07-25 08:41:37,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:37,097 INFO L93 Difference]: Finished difference Result 352 states and 354 transitions. [2018-07-25 08:41:37,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:41:37,098 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 209 [2018-07-25 08:41:37,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:37,098 INFO L225 Difference]: With dead ends: 352 [2018-07-25 08:41:37,098 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:41:37,102 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6970 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9937, Invalid=33535, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:41:37,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:41:37,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 08:41:37,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:41:37,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-07-25 08:41:37,125 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 209 [2018-07-25 08:41:37,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:37,126 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-07-25 08:41:37,126 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:41:37,126 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-07-25 08:41:37,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:41:37,126 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:37,126 INFO L354 BasicCegarLoop]: trace histogram [69, 69, 68, 1, 1, 1, 1] [2018-07-25 08:41:37,127 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:37,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1964270658, now seen corresponding path program 136 times [2018-07-25 08:41:37,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7107 backedges. 2415 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:37,410 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:37,410 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:41:37,411 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:41:37,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:41:37,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:41:37,412 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 73 states. [2018-07-25 08:41:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:37,639 INFO L93 Difference]: Finished difference Result 219 states and 220 transitions. [2018-07-25 08:41:37,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:41:37,639 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 210 [2018-07-25 08:41:37,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:37,640 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:41:37,640 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:41:37,641 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4830 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:41:37,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:41:37,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 213. [2018-07-25 08:41:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:41:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2018-07-25 08:41:37,669 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 210 [2018-07-25 08:41:37,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:37,669 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2018-07-25 08:41:37,669 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:41:37,669 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2018-07-25 08:41:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:41:37,670 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:37,670 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 69, 1, 1, 1, 1] [2018-07-25 08:41:37,670 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:37,670 INFO L82 PathProgramCache]: Analyzing trace with hash -2121441878, now seen corresponding path program 137 times [2018-07-25 08:41:37,670 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:38,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7245 backedges. 4830 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:38,067 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:38,067 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:41:38,068 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:41:38,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:41:38,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5111, Invalid=14911, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:41:38,070 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand 142 states. [2018-07-25 08:41:39,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:39,031 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2018-07-25 08:41:39,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:41:39,031 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 212 [2018-07-25 08:41:39,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:39,032 INFO L225 Difference]: With dead ends: 357 [2018-07-25 08:41:39,032 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 08:41:39,033 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10221, Invalid=34511, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:41:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 08:41:39,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-25 08:41:39,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-25 08:41:39,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2018-07-25 08:41:39,061 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 212 [2018-07-25 08:41:39,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:39,061 INFO L472 AbstractCegarLoop]: Abstraction has 214 states and 215 transitions. [2018-07-25 08:41:39,061 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:41:39,061 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 215 transitions. [2018-07-25 08:41:39,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-25 08:41:39,062 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:39,062 INFO L354 BasicCegarLoop]: trace histogram [70, 70, 69, 1, 1, 1, 1] [2018-07-25 08:41:39,063 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:39,063 INFO L82 PathProgramCache]: Analyzing trace with hash 892762787, now seen corresponding path program 138 times [2018-07-25 08:41:39,063 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 7315 backedges. 2485 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:39,330 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:39,331 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:41:39,331 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:41:39,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:41:39,331 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:41:39,331 INFO L87 Difference]: Start difference. First operand 214 states and 215 transitions. Second operand 74 states. [2018-07-25 08:41:39,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:39,559 INFO L93 Difference]: Finished difference Result 222 states and 223 transitions. [2018-07-25 08:41:39,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:41:39,559 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 213 [2018-07-25 08:41:39,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:39,560 INFO L225 Difference]: With dead ends: 222 [2018-07-25 08:41:39,560 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 08:41:39,561 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4970 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:41:39,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 08:41:39,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216. [2018-07-25 08:41:39,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-25 08:41:39,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2018-07-25 08:41:39,582 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 213 [2018-07-25 08:41:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:39,583 INFO L472 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2018-07-25 08:41:39,583 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:41:39,583 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2018-07-25 08:41:39,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-25 08:41:39,584 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:39,584 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 70, 1, 1, 1, 1] [2018-07-25 08:41:39,584 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:39,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1048354869, now seen corresponding path program 139 times [2018-07-25 08:41:39,584 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 7455 backedges. 4970 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:40,014 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:40,014 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:41:40,014 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:41:40,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:41:40,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=15337, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:41:40,016 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand 144 states. [2018-07-25 08:41:40,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:40,685 INFO L93 Difference]: Finished difference Result 362 states and 364 transitions. [2018-07-25 08:41:40,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:41:40,685 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 215 [2018-07-25 08:41:40,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:40,686 INFO L225 Difference]: With dead ends: 362 [2018-07-25 08:41:40,686 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:41:40,688 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7385 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10509, Invalid=35501, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:41:40,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:41:40,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:41:40,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:41:40,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-07-25 08:41:40,708 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 215 [2018-07-25 08:41:40,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:40,709 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-07-25 08:41:40,709 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:41:40,709 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-07-25 08:41:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:41:40,709 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:40,709 INFO L354 BasicCegarLoop]: trace histogram [71, 71, 70, 1, 1, 1, 1] [2018-07-25 08:41:40,710 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:40,710 INFO L82 PathProgramCache]: Analyzing trace with hash 241562674, now seen corresponding path program 140 times [2018-07-25 08:41:40,710 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:40,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7526 backedges. 2556 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:40,975 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:40,975 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:41:40,976 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:41:40,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:41:40,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:41:40,977 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 75 states. [2018-07-25 08:41:41,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:41,236 INFO L93 Difference]: Finished difference Result 225 states and 226 transitions. [2018-07-25 08:41:41,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:41:41,236 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 216 [2018-07-25 08:41:41,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:41,236 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:41:41,236 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:41:41,238 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:41:41,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:41:41,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-07-25 08:41:41,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:41:41,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-07-25 08:41:41,262 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 216 [2018-07-25 08:41:41,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:41,263 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-07-25 08:41:41,263 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:41:41,263 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-07-25 08:41:41,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:41:41,263 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:41,263 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 71, 1, 1, 1, 1] [2018-07-25 08:41:41,264 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:41,264 INFO L82 PathProgramCache]: Analyzing trace with hash 213561754, now seen corresponding path program 141 times [2018-07-25 08:41:41,264 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7668 backedges. 5112 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:41,683 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:41,683 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:41:41,684 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:41:41,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:41:41,685 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5401, Invalid=15769, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:41:41,685 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 146 states. [2018-07-25 08:41:42,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:42,319 INFO L93 Difference]: Finished difference Result 367 states and 369 transitions. [2018-07-25 08:41:42,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:41:42,319 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 218 [2018-07-25 08:41:42,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:42,319 INFO L225 Difference]: With dead ends: 367 [2018-07-25 08:41:42,319 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 08:41:42,322 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7597 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10801, Invalid=36505, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:41:42,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 08:41:42,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-25 08:41:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-25 08:41:42,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 221 transitions. [2018-07-25 08:41:42,343 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 221 transitions. Word has length 218 [2018-07-25 08:41:42,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:42,343 INFO L472 AbstractCegarLoop]: Abstraction has 220 states and 221 transitions. [2018-07-25 08:41:42,343 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:41:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 221 transitions. [2018-07-25 08:41:42,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-25 08:41:42,344 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:42,344 INFO L354 BasicCegarLoop]: trace histogram [72, 72, 71, 1, 1, 1, 1] [2018-07-25 08:41:42,344 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:42,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1074687955, now seen corresponding path program 142 times [2018-07-25 08:41:42,344 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7740 backedges. 2628 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:42,648 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:42,648 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:41:42,648 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:41:42,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:41:42,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:41:42,649 INFO L87 Difference]: Start difference. First operand 220 states and 221 transitions. Second operand 76 states. [2018-07-25 08:41:42,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:42,880 INFO L93 Difference]: Finished difference Result 228 states and 229 transitions. [2018-07-25 08:41:42,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:41:42,881 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 219 [2018-07-25 08:41:42,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:42,881 INFO L225 Difference]: With dead ends: 228 [2018-07-25 08:41:42,881 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 08:41:42,883 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:41:42,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 08:41:42,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 222. [2018-07-25 08:41:42,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-25 08:41:42,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 223 transitions. [2018-07-25 08:41:42,908 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 223 transitions. Word has length 219 [2018-07-25 08:41:42,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:42,908 INFO L472 AbstractCegarLoop]: Abstraction has 222 states and 223 transitions. [2018-07-25 08:41:42,908 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:41:42,908 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 223 transitions. [2018-07-25 08:41:42,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-25 08:41:42,908 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:42,909 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 72, 1, 1, 1, 1] [2018-07-25 08:41:42,909 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:42,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1983039739, now seen corresponding path program 143 times [2018-07-25 08:41:42,909 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 7884 backedges. 5256 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:43,337 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:43,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:41:43,338 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:41:43,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:41:43,339 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5549, Invalid=16207, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:41:43,340 INFO L87 Difference]: Start difference. First operand 222 states and 223 transitions. Second operand 148 states. [2018-07-25 08:41:44,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:44,215 INFO L93 Difference]: Finished difference Result 372 states and 374 transitions. [2018-07-25 08:41:44,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:41:44,215 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 221 [2018-07-25 08:41:44,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:44,216 INFO L225 Difference]: With dead ends: 372 [2018-07-25 08:41:44,216 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:41:44,221 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7812 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11097, Invalid=37523, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:41:44,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:41:44,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 08:41:44,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:41:44,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-07-25 08:41:44,246 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 221 [2018-07-25 08:41:44,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:44,247 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-07-25 08:41:44,247 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:41:44,247 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-07-25 08:41:44,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:41:44,247 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:44,247 INFO L354 BasicCegarLoop]: trace histogram [73, 73, 72, 1, 1, 1, 1] [2018-07-25 08:41:44,248 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:44,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1954034722, now seen corresponding path program 144 times [2018-07-25 08:41:44,248 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:44,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7957 backedges. 2701 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:44,537 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:44,537 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:41:44,537 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:41:44,538 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:41:44,538 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:41:44,538 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 77 states. [2018-07-25 08:41:44,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:44,775 INFO L93 Difference]: Finished difference Result 231 states and 232 transitions. [2018-07-25 08:41:44,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:41:44,775 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 222 [2018-07-25 08:41:44,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:44,776 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:41:44,776 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:41:44,777 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5402 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:41:44,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:41:44,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 225. [2018-07-25 08:41:44,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:41:44,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-07-25 08:41:44,799 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 222 [2018-07-25 08:41:44,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:44,799 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-07-25 08:41:44,799 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:41:44,799 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-07-25 08:41:44,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:41:44,800 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:44,800 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 73, 1, 1, 1, 1] [2018-07-25 08:41:44,800 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:44,800 INFO L82 PathProgramCache]: Analyzing trace with hash 926725514, now seen corresponding path program 145 times [2018-07-25 08:41:44,800 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8103 backedges. 5402 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:45,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:45,240 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:41:45,240 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:41:45,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:41:45,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5699, Invalid=16651, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:41:45,242 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 150 states. [2018-07-25 08:41:46,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:46,382 INFO L93 Difference]: Finished difference Result 377 states and 379 transitions. [2018-07-25 08:41:46,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:41:46,382 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 224 [2018-07-25 08:41:46,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:46,383 INFO L225 Difference]: With dead ends: 377 [2018-07-25 08:41:46,383 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 08:41:46,384 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8030 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11397, Invalid=38555, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:41:46,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 08:41:46,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-25 08:41:46,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-25 08:41:46,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2018-07-25 08:41:46,419 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 224 [2018-07-25 08:41:46,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:46,420 INFO L472 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2018-07-25 08:41:46,420 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:41:46,420 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2018-07-25 08:41:46,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-25 08:41:46,421 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:46,421 INFO L354 BasicCegarLoop]: trace histogram [74, 74, 73, 1, 1, 1, 1] [2018-07-25 08:41:46,421 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:46,421 INFO L82 PathProgramCache]: Analyzing trace with hash 126690563, now seen corresponding path program 146 times [2018-07-25 08:41:46,422 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8177 backedges. 2775 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:46,783 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:46,783 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:41:46,783 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:41:46,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:41:46,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:41:46,784 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand 78 states. [2018-07-25 08:41:47,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:47,038 INFO L93 Difference]: Finished difference Result 234 states and 235 transitions. [2018-07-25 08:41:47,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:41:47,038 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 225 [2018-07-25 08:41:47,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:47,038 INFO L225 Difference]: With dead ends: 234 [2018-07-25 08:41:47,039 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 08:41:47,040 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5550 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8778, Invalid=14478, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:41:47,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 08:41:47,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 228. [2018-07-25 08:41:47,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-25 08:41:47,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 229 transitions. [2018-07-25 08:41:47,063 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 229 transitions. Word has length 225 [2018-07-25 08:41:47,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:47,064 INFO L472 AbstractCegarLoop]: Abstraction has 228 states and 229 transitions. [2018-07-25 08:41:47,064 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:41:47,064 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 229 transitions. [2018-07-25 08:41:47,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-25 08:41:47,064 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:47,064 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 74, 1, 1, 1, 1] [2018-07-25 08:41:47,064 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:47,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1490612779, now seen corresponding path program 147 times [2018-07-25 08:41:47,065 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8325 backedges. 5550 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:47,538 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:47,538 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:41:47,538 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:41:47,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:41:47,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5851, Invalid=17101, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:41:47,540 INFO L87 Difference]: Start difference. First operand 228 states and 229 transitions. Second operand 152 states. [2018-07-25 08:41:48,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:48,703 INFO L93 Difference]: Finished difference Result 382 states and 384 transitions. [2018-07-25 08:41:48,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:41:48,703 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 227 [2018-07-25 08:41:48,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:48,704 INFO L225 Difference]: With dead ends: 382 [2018-07-25 08:41:48,704 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:41:48,707 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8251 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11701, Invalid=39601, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:41:48,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:41:48,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 08:41:48,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:41:48,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2018-07-25 08:41:48,729 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 227 [2018-07-25 08:41:48,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:48,729 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2018-07-25 08:41:48,729 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:41:48,730 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2018-07-25 08:41:48,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:41:48,730 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:48,730 INFO L354 BasicCegarLoop]: trace histogram [75, 75, 74, 1, 1, 1, 1] [2018-07-25 08:41:48,730 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:48,731 INFO L82 PathProgramCache]: Analyzing trace with hash 422913042, now seen corresponding path program 148 times [2018-07-25 08:41:48,731 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8400 backedges. 2850 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:49,016 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:49,016 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:41:49,016 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:41:49,017 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:41:49,017 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:41:49,017 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand 79 states. [2018-07-25 08:41:49,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:49,289 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2018-07-25 08:41:49,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:41:49,289 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 228 [2018-07-25 08:41:49,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:49,290 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:41:49,290 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:41:49,291 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5700 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:41:49,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:41:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2018-07-25 08:41:49,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:41:49,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-07-25 08:41:49,318 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 228 [2018-07-25 08:41:49,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:49,318 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-07-25 08:41:49,318 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:41:49,318 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-07-25 08:41:49,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:41:49,319 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:49,319 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 75, 1, 1, 1, 1] [2018-07-25 08:41:49,319 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:49,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1602393734, now seen corresponding path program 149 times [2018-07-25 08:41:49,319 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:49,981 INFO L134 CoverageAnalysis]: Checked inductivity of 8550 backedges. 5700 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:49,981 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:49,981 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:41:49,981 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:41:49,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:41:49,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6005, Invalid=17557, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:41:49,984 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 154 states. [2018-07-25 08:41:51,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:51,072 INFO L93 Difference]: Finished difference Result 387 states and 389 transitions. [2018-07-25 08:41:51,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:41:51,072 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 230 [2018-07-25 08:41:51,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:51,072 INFO L225 Difference]: With dead ends: 387 [2018-07-25 08:41:51,072 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 08:41:51,074 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8475 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=12009, Invalid=40661, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:41:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 08:41:51,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-25 08:41:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-25 08:41:51,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2018-07-25 08:41:51,097 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 230 [2018-07-25 08:41:51,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:51,097 INFO L472 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2018-07-25 08:41:51,098 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:41:51,098 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2018-07-25 08:41:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-25 08:41:51,098 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:51,098 INFO L354 BasicCegarLoop]: trace histogram [76, 76, 75, 1, 1, 1, 1] [2018-07-25 08:41:51,098 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:51,099 INFO L82 PathProgramCache]: Analyzing trace with hash -917464525, now seen corresponding path program 150 times [2018-07-25 08:41:51,099 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:51,375 INFO L134 CoverageAnalysis]: Checked inductivity of 8626 backedges. 2926 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:51,376 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:51,376 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:41:51,376 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:41:51,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:41:51,377 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:41:51,377 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand 80 states. [2018-07-25 08:41:51,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:51,631 INFO L93 Difference]: Finished difference Result 240 states and 241 transitions. [2018-07-25 08:41:51,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:41:51,631 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 231 [2018-07-25 08:41:51,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:51,632 INFO L225 Difference]: With dead ends: 240 [2018-07-25 08:41:51,632 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 08:41:51,635 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5852 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:41:51,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 08:41:51,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2018-07-25 08:41:51,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-25 08:41:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2018-07-25 08:41:51,659 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 231 [2018-07-25 08:41:51,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:51,659 INFO L472 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2018-07-25 08:41:51,659 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:41:51,659 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2018-07-25 08:41:51,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-25 08:41:51,660 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:51,660 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 76, 1, 1, 1, 1] [2018-07-25 08:41:51,660 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:51,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1215046821, now seen corresponding path program 151 times [2018-07-25 08:41:51,661 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 5852 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:52,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:52,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:41:52,136 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:41:52,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:41:52,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6161, Invalid=18019, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:41:52,138 INFO L87 Difference]: Start difference. First operand 234 states and 235 transitions. Second operand 156 states. [2018-07-25 08:41:53,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:53,320 INFO L93 Difference]: Finished difference Result 392 states and 394 transitions. [2018-07-25 08:41:53,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:41:53,320 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 233 [2018-07-25 08:41:53,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:53,321 INFO L225 Difference]: With dead ends: 392 [2018-07-25 08:41:53,321 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:41:53,324 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8702 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12321, Invalid=41735, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 08:41:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:41:53,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 08:41:53,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:41:53,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-07-25 08:41:53,348 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 233 [2018-07-25 08:41:53,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:53,348 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-07-25 08:41:53,348 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:41:53,348 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-07-25 08:41:53,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:41:53,349 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:53,349 INFO L354 BasicCegarLoop]: trace histogram [77, 77, 76, 1, 1, 1, 1] [2018-07-25 08:41:53,349 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:53,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1878604798, now seen corresponding path program 152 times [2018-07-25 08:41:53,349 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8855 backedges. 3003 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:53,648 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:53,649 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:41:53,649 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:41:53,649 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:41:53,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:41:53,650 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 81 states. [2018-07-25 08:41:53,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:53,908 INFO L93 Difference]: Finished difference Result 243 states and 244 transitions. [2018-07-25 08:41:53,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:41:53,908 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 234 [2018-07-25 08:41:53,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:53,909 INFO L225 Difference]: With dead ends: 243 [2018-07-25 08:41:53,909 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 08:41:53,911 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6006 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:41:53,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 08:41:53,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 237. [2018-07-25 08:41:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:41:53,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2018-07-25 08:41:53,950 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 234 [2018-07-25 08:41:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:53,951 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2018-07-25 08:41:53,951 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:41:53,951 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2018-07-25 08:41:53,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:41:53,952 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:53,952 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 77, 1, 1, 1, 1] [2018-07-25 08:41:53,952 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:53,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1452880534, now seen corresponding path program 153 times [2018-07-25 08:41:53,953 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9009 backedges. 6006 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:54,602 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:54,602 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:41:54,602 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:41:54,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:41:54,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6319, Invalid=18487, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:41:54,604 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand 158 states. [2018-07-25 08:41:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:55,859 INFO L93 Difference]: Finished difference Result 397 states and 399 transitions. [2018-07-25 08:41:55,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:41:55,860 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 236 [2018-07-25 08:41:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:55,860 INFO L225 Difference]: With dead ends: 397 [2018-07-25 08:41:55,860 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 08:41:55,864 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8932 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12637, Invalid=42823, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 08:41:55,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 08:41:55,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-07-25 08:41:55,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-25 08:41:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 239 transitions. [2018-07-25 08:41:55,903 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 239 transitions. Word has length 236 [2018-07-25 08:41:55,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:55,903 INFO L472 AbstractCegarLoop]: Abstraction has 238 states and 239 transitions. [2018-07-25 08:41:55,903 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:41:55,903 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 239 transitions. [2018-07-25 08:41:55,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-25 08:41:55,904 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:55,904 INFO L354 BasicCegarLoop]: trace histogram [78, 78, 77, 1, 1, 1, 1] [2018-07-25 08:41:55,904 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:55,905 INFO L82 PathProgramCache]: Analyzing trace with hash 225890147, now seen corresponding path program 154 times [2018-07-25 08:41:55,905 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9087 backedges. 3081 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:56,255 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:56,256 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:41:56,256 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:41:56,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:41:56,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:41:56,257 INFO L87 Difference]: Start difference. First operand 238 states and 239 transitions. Second operand 82 states. [2018-07-25 08:41:56,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:56,580 INFO L93 Difference]: Finished difference Result 246 states and 247 transitions. [2018-07-25 08:41:56,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:41:56,580 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 237 [2018-07-25 08:41:56,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:56,581 INFO L225 Difference]: With dead ends: 246 [2018-07-25 08:41:56,581 INFO L226 Difference]: Without dead ends: 244 [2018-07-25 08:41:56,583 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:41:56,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-25 08:41:56,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 240. [2018-07-25 08:41:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-07-25 08:41:56,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2018-07-25 08:41:56,612 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 237 [2018-07-25 08:41:56,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:56,613 INFO L472 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2018-07-25 08:41:56,613 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:41:56,613 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2018-07-25 08:41:56,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-07-25 08:41:56,613 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:56,614 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 78, 1, 1, 1, 1] [2018-07-25 08:41:56,614 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:56,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1962834805, now seen corresponding path program 155 times [2018-07-25 08:41:56,614 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:57,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9243 backedges. 6162 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:57,204 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:57,204 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:41:57,204 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:41:57,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:41:57,206 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6479, Invalid=18961, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:41:57,206 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand 160 states. [2018-07-25 08:41:58,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:58,700 INFO L93 Difference]: Finished difference Result 402 states and 404 transitions. [2018-07-25 08:41:58,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:41:58,700 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 239 [2018-07-25 08:41:58,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:58,701 INFO L225 Difference]: With dead ends: 402 [2018-07-25 08:41:58,701 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 08:41:58,705 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12957, Invalid=43925, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 08:41:58,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 08:41:58,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 08:41:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 08:41:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-07-25 08:41:58,733 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 239 [2018-07-25 08:41:58,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:58,734 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-07-25 08:41:58,734 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:41:58,734 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-07-25 08:41:58,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 08:41:58,734 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:58,735 INFO L354 BasicCegarLoop]: trace histogram [79, 79, 78, 1, 1, 1, 1] [2018-07-25 08:41:58,735 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:58,735 INFO L82 PathProgramCache]: Analyzing trace with hash -304671758, now seen corresponding path program 156 times [2018-07-25 08:41:58,735 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:59,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9322 backedges. 3160 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:59,150 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:59,150 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:41:59,151 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:41:59,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:41:59,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:41:59,151 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 83 states. [2018-07-25 08:41:59,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:59,438 INFO L93 Difference]: Finished difference Result 249 states and 250 transitions. [2018-07-25 08:41:59,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:41:59,438 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 240 [2018-07-25 08:41:59,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:59,439 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:41:59,439 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:41:59,441 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6320 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:41:59,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:41:59,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 243. [2018-07-25 08:41:59,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:41:59,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-07-25 08:41:59,470 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 240 [2018-07-25 08:41:59,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:59,471 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-07-25 08:41:59,471 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:41:59,471 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-07-25 08:41:59,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:41:59,471 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:59,471 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 79, 1, 1, 1, 1] [2018-07-25 08:41:59,472 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:59,472 INFO L82 PathProgramCache]: Analyzing trace with hash -731717286, now seen corresponding path program 157 times [2018-07-25 08:41:59,472 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:00,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9480 backedges. 6320 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:00,070 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:00,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:42:00,070 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:42:00,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:42:00,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6641, Invalid=19441, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:42:00,073 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 162 states. [2018-07-25 08:42:01,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:01,634 INFO L93 Difference]: Finished difference Result 407 states and 409 transitions. [2018-07-25 08:42:01,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:42:01,635 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 242 [2018-07-25 08:42:01,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:01,635 INFO L225 Difference]: With dead ends: 407 [2018-07-25 08:42:01,636 INFO L226 Difference]: Without dead ends: 244 [2018-07-25 08:42:01,640 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9401 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13281, Invalid=45041, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 08:42:01,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-25 08:42:01,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-07-25 08:42:01,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-07-25 08:42:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 245 transitions. [2018-07-25 08:42:01,667 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 245 transitions. Word has length 242 [2018-07-25 08:42:01,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:01,668 INFO L472 AbstractCegarLoop]: Abstraction has 244 states and 245 transitions. [2018-07-25 08:42:01,668 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:42:01,668 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 245 transitions. [2018-07-25 08:42:01,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-07-25 08:42:01,668 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:01,668 INFO L354 BasicCegarLoop]: trace histogram [80, 80, 79, 1, 1, 1, 1] [2018-07-25 08:42:01,668 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:01,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1184744595, now seen corresponding path program 158 times [2018-07-25 08:42:01,669 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:02,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9560 backedges. 3240 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:02,004 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:02,004 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:42:02,005 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:42:02,005 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:42:02,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:42:02,006 INFO L87 Difference]: Start difference. First operand 244 states and 245 transitions. Second operand 84 states. [2018-07-25 08:42:02,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:02,313 INFO L93 Difference]: Finished difference Result 252 states and 253 transitions. [2018-07-25 08:42:02,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:42:02,313 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 243 [2018-07-25 08:42:02,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:02,314 INFO L225 Difference]: With dead ends: 252 [2018-07-25 08:42:02,314 INFO L226 Difference]: Without dead ends: 250 [2018-07-25 08:42:02,316 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6480 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:42:02,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-25 08:42:02,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 246. [2018-07-25 08:42:02,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-07-25 08:42:02,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 247 transitions. [2018-07-25 08:42:02,341 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 247 transitions. Word has length 243 [2018-07-25 08:42:02,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:02,342 INFO L472 AbstractCegarLoop]: Abstraction has 246 states and 247 transitions. [2018-07-25 08:42:02,342 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:42:02,342 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 247 transitions. [2018-07-25 08:42:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-07-25 08:42:02,342 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:02,342 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 80, 1, 1, 1, 1] [2018-07-25 08:42:02,343 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:02,343 INFO L82 PathProgramCache]: Analyzing trace with hash 373288379, now seen corresponding path program 159 times [2018-07-25 08:42:02,343 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:02,878 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 6480 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:02,878 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:02,878 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:42:02,879 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:42:02,880 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:42:02,881 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6805, Invalid=19927, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:42:02,881 INFO L87 Difference]: Start difference. First operand 246 states and 247 transitions. Second operand 164 states. [2018-07-25 08:42:04,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:04,203 INFO L93 Difference]: Finished difference Result 412 states and 414 transitions. [2018-07-25 08:42:04,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:42:04,203 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 245 [2018-07-25 08:42:04,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:04,204 INFO L225 Difference]: With dead ends: 412 [2018-07-25 08:42:04,204 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:42:04,207 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9640 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13609, Invalid=46171, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 08:42:04,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:42:04,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-25 08:42:04,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:42:04,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2018-07-25 08:42:04,233 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 245 [2018-07-25 08:42:04,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:04,233 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2018-07-25 08:42:04,234 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:42:04,234 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2018-07-25 08:42:04,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:42:04,234 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:04,234 INFO L354 BasicCegarLoop]: trace histogram [81, 81, 80, 1, 1, 1, 1] [2018-07-25 08:42:04,234 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:04,235 INFO L82 PathProgramCache]: Analyzing trace with hash 688919522, now seen corresponding path program 160 times [2018-07-25 08:42:04,235 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:04,552 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 3321 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:04,552 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:04,552 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:42:04,552 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:42:04,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:42:04,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:42:04,553 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 85 states. [2018-07-25 08:42:04,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:04,818 INFO L93 Difference]: Finished difference Result 255 states and 256 transitions. [2018-07-25 08:42:04,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:42:04,818 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 246 [2018-07-25 08:42:04,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:04,819 INFO L225 Difference]: With dead ends: 255 [2018-07-25 08:42:04,819 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 08:42:04,820 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6642 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10458, Invalid=17264, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:42:04,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 08:42:04,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2018-07-25 08:42:04,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 08:42:04,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2018-07-25 08:42:04,846 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 246 [2018-07-25 08:42:04,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:04,847 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2018-07-25 08:42:04,847 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:42:04,847 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2018-07-25 08:42:04,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 08:42:04,847 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:04,847 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 81, 1, 1, 1, 1] [2018-07-25 08:42:04,847 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:04,848 INFO L82 PathProgramCache]: Analyzing trace with hash 626763082, now seen corresponding path program 161 times [2018-07-25 08:42:04,848 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9963 backedges. 6642 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:05,393 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:05,393 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:42:05,394 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:42:05,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:42:05,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6971, Invalid=20419, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:42:05,396 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand 166 states. [2018-07-25 08:42:06,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:06,744 INFO L93 Difference]: Finished difference Result 417 states and 419 transitions. [2018-07-25 08:42:06,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:42:06,744 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 248 [2018-07-25 08:42:06,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:06,744 INFO L225 Difference]: With dead ends: 417 [2018-07-25 08:42:06,744 INFO L226 Difference]: Without dead ends: 250 [2018-07-25 08:42:06,749 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9882 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13941, Invalid=47315, Unknown=0, NotChecked=0, Total=61256 [2018-07-25 08:42:06,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-25 08:42:06,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-07-25 08:42:06,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-07-25 08:42:06,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 251 transitions. [2018-07-25 08:42:06,786 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 251 transitions. Word has length 248 [2018-07-25 08:42:06,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:06,786 INFO L472 AbstractCegarLoop]: Abstraction has 250 states and 251 transitions. [2018-07-25 08:42:06,786 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:42:06,786 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 251 transitions. [2018-07-25 08:42:06,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-25 08:42:06,787 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:06,787 INFO L354 BasicCegarLoop]: trace histogram [82, 82, 81, 1, 1, 1, 1] [2018-07-25 08:42:06,787 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:06,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1910733251, now seen corresponding path program 162 times [2018-07-25 08:42:06,787 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 10045 backedges. 3403 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:07,166 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:07,166 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:42:07,167 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:42:07,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:42:07,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:42:07,167 INFO L87 Difference]: Start difference. First operand 250 states and 251 transitions. Second operand 86 states. [2018-07-25 08:42:07,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:07,504 INFO L93 Difference]: Finished difference Result 258 states and 259 transitions. [2018-07-25 08:42:07,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:42:07,504 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 249 [2018-07-25 08:42:07,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:07,505 INFO L225 Difference]: With dead ends: 258 [2018-07-25 08:42:07,505 INFO L226 Difference]: Without dead ends: 256 [2018-07-25 08:42:07,506 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6806 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:42:07,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-07-25 08:42:07,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 252. [2018-07-25 08:42:07,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-25 08:42:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 253 transitions. [2018-07-25 08:42:07,533 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 253 transitions. Word has length 249 [2018-07-25 08:42:07,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:07,533 INFO L472 AbstractCegarLoop]: Abstraction has 252 states and 253 transitions. [2018-07-25 08:42:07,533 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:42:07,533 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 253 transitions. [2018-07-25 08:42:07,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-25 08:42:07,534 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:07,534 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 82, 1, 1, 1, 1] [2018-07-25 08:42:07,534 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:07,534 INFO L82 PathProgramCache]: Analyzing trace with hash -2031282453, now seen corresponding path program 163 times [2018-07-25 08:42:07,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 10209 backedges. 6806 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:08,105 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:08,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:42:08,105 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:42:08,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:42:08,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7139, Invalid=20917, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:42:08,107 INFO L87 Difference]: Start difference. First operand 252 states and 253 transitions. Second operand 168 states. [2018-07-25 08:42:09,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:09,718 INFO L93 Difference]: Finished difference Result 422 states and 424 transitions. [2018-07-25 08:42:09,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:42:09,718 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 251 [2018-07-25 08:42:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:09,719 INFO L225 Difference]: With dead ends: 422 [2018-07-25 08:42:09,719 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 08:42:09,724 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10127 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14277, Invalid=48473, Unknown=0, NotChecked=0, Total=62750 [2018-07-25 08:42:09,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 08:42:09,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 08:42:09,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 08:42:09,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 254 transitions. [2018-07-25 08:42:09,770 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 254 transitions. Word has length 251 [2018-07-25 08:42:09,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:09,770 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 254 transitions. [2018-07-25 08:42:09,770 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:42:09,770 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 254 transitions. [2018-07-25 08:42:09,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 08:42:09,771 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:09,771 INFO L354 BasicCegarLoop]: trace histogram [83, 83, 82, 1, 1, 1, 1] [2018-07-25 08:42:09,772 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:09,772 INFO L82 PathProgramCache]: Analyzing trace with hash 2040251346, now seen corresponding path program 164 times [2018-07-25 08:42:09,772 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10292 backedges. 3486 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:10,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:10,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:42:10,189 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:42:10,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:42:10,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:42:10,190 INFO L87 Difference]: Start difference. First operand 253 states and 254 transitions. Second operand 87 states. [2018-07-25 08:42:10,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:10,503 INFO L93 Difference]: Finished difference Result 261 states and 262 transitions. [2018-07-25 08:42:10,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:42:10,503 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 252 [2018-07-25 08:42:10,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:10,504 INFO L225 Difference]: With dead ends: 261 [2018-07-25 08:42:10,504 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 08:42:10,505 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6972 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:42:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 08:42:10,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2018-07-25 08:42:10,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 08:42:10,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2018-07-25 08:42:10,532 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 252 [2018-07-25 08:42:10,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:10,532 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2018-07-25 08:42:10,532 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:42:10,532 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2018-07-25 08:42:10,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 08:42:10,533 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:10,533 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 83, 1, 1, 1, 1] [2018-07-25 08:42:10,533 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:10,533 INFO L82 PathProgramCache]: Analyzing trace with hash -2118444742, now seen corresponding path program 165 times [2018-07-25 08:42:10,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10458 backedges. 6972 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:11,107 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:11,107 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:42:11,107 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:42:11,108 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:42:11,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7309, Invalid=21421, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:42:11,109 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand 170 states. [2018-07-25 08:42:12,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:12,577 INFO L93 Difference]: Finished difference Result 427 states and 429 transitions. [2018-07-25 08:42:12,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:42:12,577 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 254 [2018-07-25 08:42:12,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:12,578 INFO L225 Difference]: With dead ends: 427 [2018-07-25 08:42:12,578 INFO L226 Difference]: Without dead ends: 256 [2018-07-25 08:42:12,582 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10375 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14617, Invalid=49645, Unknown=0, NotChecked=0, Total=64262 [2018-07-25 08:42:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-07-25 08:42:12,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-07-25 08:42:12,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-07-25 08:42:12,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2018-07-25 08:42:12,627 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 254 [2018-07-25 08:42:12,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:12,627 INFO L472 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2018-07-25 08:42:12,627 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:42:12,627 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2018-07-25 08:42:12,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-07-25 08:42:12,628 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:12,628 INFO L354 BasicCegarLoop]: trace histogram [84, 84, 83, 1, 1, 1, 1] [2018-07-25 08:42:12,628 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:12,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1226445069, now seen corresponding path program 166 times [2018-07-25 08:42:12,629 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:13,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10542 backedges. 3570 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:13,079 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:13,079 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:42:13,079 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:42:13,080 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:42:13,080 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:42:13,080 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand 88 states. [2018-07-25 08:42:13,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:13,414 INFO L93 Difference]: Finished difference Result 264 states and 265 transitions. [2018-07-25 08:42:13,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:42:13,414 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 255 [2018-07-25 08:42:13,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:13,415 INFO L225 Difference]: With dead ends: 264 [2018-07-25 08:42:13,415 INFO L226 Difference]: Without dead ends: 262 [2018-07-25 08:42:13,417 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:42:13,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-07-25 08:42:13,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 258. [2018-07-25 08:42:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-07-25 08:42:13,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 259 transitions. [2018-07-25 08:42:13,464 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 259 transitions. Word has length 255 [2018-07-25 08:42:13,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:13,464 INFO L472 AbstractCegarLoop]: Abstraction has 258 states and 259 transitions. [2018-07-25 08:42:13,464 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:42:13,464 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 259 transitions. [2018-07-25 08:42:13,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-07-25 08:42:13,465 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:13,465 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 84, 1, 1, 1, 1] [2018-07-25 08:42:13,466 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:13,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1792606181, now seen corresponding path program 167 times [2018-07-25 08:42:13,466 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 10710 backedges. 7140 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:14,263 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:14,263 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:42:14,263 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:42:14,264 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:42:14,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7481, Invalid=21931, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:42:14,266 INFO L87 Difference]: Start difference. First operand 258 states and 259 transitions. Second operand 172 states. [2018-07-25 08:42:15,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:15,262 INFO L93 Difference]: Finished difference Result 432 states and 434 transitions. [2018-07-25 08:42:15,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:42:15,262 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 257 [2018-07-25 08:42:15,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:15,262 INFO L225 Difference]: With dead ends: 432 [2018-07-25 08:42:15,262 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 08:42:15,266 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10626 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14961, Invalid=50831, Unknown=0, NotChecked=0, Total=65792 [2018-07-25 08:42:15,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 08:42:15,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-07-25 08:42:15,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 08:42:15,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-07-25 08:42:15,295 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 257 [2018-07-25 08:42:15,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:15,295 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-07-25 08:42:15,295 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:42:15,295 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-07-25 08:42:15,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 08:42:15,296 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:15,296 INFO L354 BasicCegarLoop]: trace histogram [85, 85, 84, 1, 1, 1, 1] [2018-07-25 08:42:15,296 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:15,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1193008190, now seen corresponding path program 168 times [2018-07-25 08:42:15,297 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10795 backedges. 3655 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:15,698 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:15,698 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:42:15,698 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:42:15,699 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:42:15,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:42:15,699 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 89 states. [2018-07-25 08:42:16,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:16,026 INFO L93 Difference]: Finished difference Result 267 states and 268 transitions. [2018-07-25 08:42:16,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:42:16,026 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 258 [2018-07-25 08:42:16,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:16,027 INFO L225 Difference]: With dead ends: 267 [2018-07-25 08:42:16,027 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 08:42:16,028 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7310 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:42:16,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 08:42:16,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 261. [2018-07-25 08:42:16,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 08:42:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2018-07-25 08:42:16,062 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 258 [2018-07-25 08:42:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:16,063 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2018-07-25 08:42:16,063 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:42:16,063 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2018-07-25 08:42:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 08:42:16,063 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:16,064 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 85, 1, 1, 1, 1] [2018-07-25 08:42:16,064 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:16,064 INFO L82 PathProgramCache]: Analyzing trace with hash 275463466, now seen corresponding path program 169 times [2018-07-25 08:42:16,064 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 10965 backedges. 7310 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:16,666 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:16,666 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:42:16,666 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:42:16,668 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:42:16,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7655, Invalid=22447, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:42:16,670 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand 174 states. [2018-07-25 08:42:17,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:17,381 INFO L93 Difference]: Finished difference Result 437 states and 439 transitions. [2018-07-25 08:42:17,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:42:17,381 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 260 [2018-07-25 08:42:17,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:17,382 INFO L225 Difference]: With dead ends: 437 [2018-07-25 08:42:17,382 INFO L226 Difference]: Without dead ends: 262 [2018-07-25 08:42:17,386 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10880 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15309, Invalid=52031, Unknown=0, NotChecked=0, Total=67340 [2018-07-25 08:42:17,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-07-25 08:42:17,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2018-07-25 08:42:17,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-07-25 08:42:17,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 263 transitions. [2018-07-25 08:42:17,416 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 263 transitions. Word has length 260 [2018-07-25 08:42:17,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:17,417 INFO L472 AbstractCegarLoop]: Abstraction has 262 states and 263 transitions. [2018-07-25 08:42:17,417 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:42:17,417 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 263 transitions. [2018-07-25 08:42:17,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-07-25 08:42:17,418 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:17,418 INFO L354 BasicCegarLoop]: trace histogram [86, 86, 85, 1, 1, 1, 1] [2018-07-25 08:42:17,418 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:17,418 INFO L82 PathProgramCache]: Analyzing trace with hash 130229283, now seen corresponding path program 170 times [2018-07-25 08:42:17,418 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11051 backedges. 3741 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:17,786 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:17,786 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:42:17,786 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:42:17,787 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:42:17,787 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:42:17,787 INFO L87 Difference]: Start difference. First operand 262 states and 263 transitions. Second operand 90 states. [2018-07-25 08:42:18,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:18,100 INFO L93 Difference]: Finished difference Result 270 states and 271 transitions. [2018-07-25 08:42:18,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:42:18,100 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 261 [2018-07-25 08:42:18,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:18,101 INFO L225 Difference]: With dead ends: 270 [2018-07-25 08:42:18,101 INFO L226 Difference]: Without dead ends: 268 [2018-07-25 08:42:18,102 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7482 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:42:18,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-07-25 08:42:18,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2018-07-25 08:42:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-07-25 08:42:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2018-07-25 08:42:18,131 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 261 [2018-07-25 08:42:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:18,131 INFO L472 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2018-07-25 08:42:18,131 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:42:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2018-07-25 08:42:18,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-07-25 08:42:18,132 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:18,132 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 86, 1, 1, 1, 1] [2018-07-25 08:42:18,132 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:18,132 INFO L82 PathProgramCache]: Analyzing trace with hash 596355403, now seen corresponding path program 171 times [2018-07-25 08:42:18,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:18,833 INFO L134 CoverageAnalysis]: Checked inductivity of 11223 backedges. 7482 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:18,833 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:18,833 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:42:18,833 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:42:18,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:42:18,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7831, Invalid=22969, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:42:18,835 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand 176 states. [2018-07-25 08:42:19,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:19,553 INFO L93 Difference]: Finished difference Result 442 states and 444 transitions. [2018-07-25 08:42:19,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:42:19,553 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 263 [2018-07-25 08:42:19,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:19,554 INFO L225 Difference]: With dead ends: 442 [2018-07-25 08:42:19,554 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 08:42:19,557 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11137 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15661, Invalid=53245, Unknown=0, NotChecked=0, Total=68906 [2018-07-25 08:42:19,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 08:42:19,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-25 08:42:19,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 08:42:19,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2018-07-25 08:42:19,586 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 263 [2018-07-25 08:42:19,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:19,586 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2018-07-25 08:42:19,586 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:42:19,586 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2018-07-25 08:42:19,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 08:42:19,587 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:19,587 INFO L354 BasicCegarLoop]: trace histogram [87, 87, 86, 1, 1, 1, 1] [2018-07-25 08:42:19,587 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:19,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1043123278, now seen corresponding path program 172 times [2018-07-25 08:42:19,588 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11310 backedges. 3828 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:19,964 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:19,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:42:19,964 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:42:19,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:42:19,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:42:19,965 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand 91 states. [2018-07-25 08:42:20,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:20,274 INFO L93 Difference]: Finished difference Result 273 states and 274 transitions. [2018-07-25 08:42:20,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:42:20,274 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 264 [2018-07-25 08:42:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:20,274 INFO L225 Difference]: With dead ends: 273 [2018-07-25 08:42:20,274 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 08:42:20,276 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7656 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:42:20,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 08:42:20,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 267. [2018-07-25 08:42:20,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 08:42:20,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-07-25 08:42:20,306 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 264 [2018-07-25 08:42:20,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:20,306 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-07-25 08:42:20,306 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:42:20,307 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-07-25 08:42:20,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 08:42:20,307 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:20,307 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 87, 1, 1, 1, 1] [2018-07-25 08:42:20,307 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:20,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1714024166, now seen corresponding path program 173 times [2018-07-25 08:42:20,308 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 11484 backedges. 7656 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:20,958 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:20,958 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:42:20,958 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:42:20,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:42:20,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8009, Invalid=23497, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:42:20,962 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 178 states. [2018-07-25 08:42:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:22,269 INFO L93 Difference]: Finished difference Result 447 states and 449 transitions. [2018-07-25 08:42:22,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:42:22,269 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 266 [2018-07-25 08:42:22,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:22,270 INFO L225 Difference]: With dead ends: 447 [2018-07-25 08:42:22,270 INFO L226 Difference]: Without dead ends: 268 [2018-07-25 08:42:22,273 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11397 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16017, Invalid=54473, Unknown=0, NotChecked=0, Total=70490 [2018-07-25 08:42:22,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-07-25 08:42:22,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2018-07-25 08:42:22,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-07-25 08:42:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 269 transitions. [2018-07-25 08:42:22,304 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 269 transitions. Word has length 266 [2018-07-25 08:42:22,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:22,304 INFO L472 AbstractCegarLoop]: Abstraction has 268 states and 269 transitions. [2018-07-25 08:42:22,304 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:42:22,304 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 269 transitions. [2018-07-25 08:42:22,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-07-25 08:42:22,305 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:22,305 INFO L354 BasicCegarLoop]: trace histogram [88, 88, 87, 1, 1, 1, 1] [2018-07-25 08:42:22,305 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:22,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1055319725, now seen corresponding path program 174 times [2018-07-25 08:42:22,305 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 11572 backedges. 3916 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:22,743 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:22,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:42:22,743 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:42:22,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:42:22,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:42:22,744 INFO L87 Difference]: Start difference. First operand 268 states and 269 transitions. Second operand 92 states. [2018-07-25 08:42:23,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:23,058 INFO L93 Difference]: Finished difference Result 276 states and 277 transitions. [2018-07-25 08:42:23,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:42:23,059 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 267 [2018-07-25 08:42:23,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:23,059 INFO L225 Difference]: With dead ends: 276 [2018-07-25 08:42:23,059 INFO L226 Difference]: Without dead ends: 274 [2018-07-25 08:42:23,061 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7832 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:42:23,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-07-25 08:42:23,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 270. [2018-07-25 08:42:23,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-07-25 08:42:23,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 271 transitions. [2018-07-25 08:42:23,093 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 271 transitions. Word has length 267 [2018-07-25 08:42:23,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:23,093 INFO L472 AbstractCegarLoop]: Abstraction has 270 states and 271 transitions. [2018-07-25 08:42:23,093 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:42:23,093 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 271 transitions. [2018-07-25 08:42:23,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-07-25 08:42:23,094 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:23,094 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 88, 1, 1, 1, 1] [2018-07-25 08:42:23,094 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:23,094 INFO L82 PathProgramCache]: Analyzing trace with hash -549907845, now seen corresponding path program 175 times [2018-07-25 08:42:23,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 11748 backedges. 7832 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:23,915 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:23,915 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:42:23,916 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:42:23,917 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:42:23,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8189, Invalid=24031, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:42:23,918 INFO L87 Difference]: Start difference. First operand 270 states and 271 transitions. Second operand 180 states. [2018-07-25 08:42:25,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:25,744 INFO L93 Difference]: Finished difference Result 452 states and 454 transitions. [2018-07-25 08:42:25,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:42:25,744 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 269 [2018-07-25 08:42:25,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:25,744 INFO L225 Difference]: With dead ends: 452 [2018-07-25 08:42:25,744 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 08:42:25,748 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11660 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=16377, Invalid=55715, Unknown=0, NotChecked=0, Total=72092 [2018-07-25 08:42:25,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 08:42:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-07-25 08:42:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 08:42:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2018-07-25 08:42:25,780 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 269 [2018-07-25 08:42:25,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:25,780 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2018-07-25 08:42:25,780 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:42:25,780 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2018-07-25 08:42:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 08:42:25,781 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:25,781 INFO L354 BasicCegarLoop]: trace histogram [89, 89, 88, 1, 1, 1, 1] [2018-07-25 08:42:25,781 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:25,781 INFO L82 PathProgramCache]: Analyzing trace with hash -791481438, now seen corresponding path program 176 times [2018-07-25 08:42:25,781 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 11837 backedges. 4005 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:26,194 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:26,194 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:42:26,194 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:42:26,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:42:26,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:42:26,195 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 93 states. [2018-07-25 08:42:26,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:26,570 INFO L93 Difference]: Finished difference Result 279 states and 280 transitions. [2018-07-25 08:42:26,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:42:26,570 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 270 [2018-07-25 08:42:26,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:26,571 INFO L225 Difference]: With dead ends: 279 [2018-07-25 08:42:26,571 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 08:42:26,573 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8010 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:42:26,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 08:42:26,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 273. [2018-07-25 08:42:26,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 08:42:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2018-07-25 08:42:26,684 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 270 [2018-07-25 08:42:26,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:26,685 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2018-07-25 08:42:26,685 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:42:26,685 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2018-07-25 08:42:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 08:42:26,686 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:26,687 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 89, 1, 1, 1, 1] [2018-07-25 08:42:26,687 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:26,687 INFO L82 PathProgramCache]: Analyzing trace with hash -404384502, now seen corresponding path program 177 times [2018-07-25 08:42:26,687 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12015 backedges. 8010 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:27,473 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:27,474 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:42:27,474 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:42:27,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:42:27,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8371, Invalid=24571, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:42:27,477 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand 182 states. [2018-07-25 08:42:29,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:29,376 INFO L93 Difference]: Finished difference Result 457 states and 459 transitions. [2018-07-25 08:42:29,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:42:29,376 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 272 [2018-07-25 08:42:29,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:29,377 INFO L225 Difference]: With dead ends: 457 [2018-07-25 08:42:29,377 INFO L226 Difference]: Without dead ends: 274 [2018-07-25 08:42:29,381 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11926 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16741, Invalid=56971, Unknown=0, NotChecked=0, Total=73712 [2018-07-25 08:42:29,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-07-25 08:42:29,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2018-07-25 08:42:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-07-25 08:42:29,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 275 transitions. [2018-07-25 08:42:29,413 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 275 transitions. Word has length 272 [2018-07-25 08:42:29,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:29,413 INFO L472 AbstractCegarLoop]: Abstraction has 274 states and 275 transitions. [2018-07-25 08:42:29,413 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:42:29,413 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 275 transitions. [2018-07-25 08:42:29,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-07-25 08:42:29,414 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:29,414 INFO L354 BasicCegarLoop]: trace histogram [90, 90, 89, 1, 1, 1, 1] [2018-07-25 08:42:29,414 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:29,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1241894531, now seen corresponding path program 178 times [2018-07-25 08:42:29,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:29,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12105 backedges. 4095 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:29,873 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:29,873 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:42:29,874 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:42:29,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:42:29,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:42:29,874 INFO L87 Difference]: Start difference. First operand 274 states and 275 transitions. Second operand 94 states. [2018-07-25 08:42:30,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:30,240 INFO L93 Difference]: Finished difference Result 282 states and 283 transitions. [2018-07-25 08:42:30,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:42:30,241 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 273 [2018-07-25 08:42:30,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:30,241 INFO L225 Difference]: With dead ends: 282 [2018-07-25 08:42:30,241 INFO L226 Difference]: Without dead ends: 280 [2018-07-25 08:42:30,243 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8190 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:42:30,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-07-25 08:42:30,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 276. [2018-07-25 08:42:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-07-25 08:42:30,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 277 transitions. [2018-07-25 08:42:30,275 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 277 transitions. Word has length 273 [2018-07-25 08:42:30,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:30,275 INFO L472 AbstractCegarLoop]: Abstraction has 276 states and 277 transitions. [2018-07-25 08:42:30,275 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:42:30,275 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 277 transitions. [2018-07-25 08:42:30,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-07-25 08:42:30,276 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:30,276 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 90, 1, 1, 1, 1] [2018-07-25 08:42:30,276 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:30,276 INFO L82 PathProgramCache]: Analyzing trace with hash -540197973, now seen corresponding path program 179 times [2018-07-25 08:42:30,276 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:31,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12285 backedges. 8190 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:31,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:31,020 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:42:31,020 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:42:31,021 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:42:31,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8555, Invalid=25117, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:42:31,021 INFO L87 Difference]: Start difference. First operand 276 states and 277 transitions. Second operand 184 states. [2018-07-25 08:42:32,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:32,869 INFO L93 Difference]: Finished difference Result 462 states and 464 transitions. [2018-07-25 08:42:32,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:42:32,869 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 275 [2018-07-25 08:42:32,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:32,870 INFO L225 Difference]: With dead ends: 462 [2018-07-25 08:42:32,870 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 08:42:32,873 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12195 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17109, Invalid=58241, Unknown=0, NotChecked=0, Total=75350 [2018-07-25 08:42:32,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 08:42:32,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-25 08:42:32,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 08:42:32,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2018-07-25 08:42:32,904 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 275 [2018-07-25 08:42:32,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:32,904 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2018-07-25 08:42:32,904 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:42:32,904 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2018-07-25 08:42:32,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 08:42:32,905 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:32,905 INFO L354 BasicCegarLoop]: trace histogram [91, 91, 90, 1, 1, 1, 1] [2018-07-25 08:42:32,905 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:32,905 INFO L82 PathProgramCache]: Analyzing trace with hash -473078894, now seen corresponding path program 180 times [2018-07-25 08:42:32,905 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:33,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12376 backedges. 4186 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:33,309 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:33,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:42:33,309 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:42:33,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:42:33,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:42:33,310 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand 95 states. [2018-07-25 08:42:33,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:33,645 INFO L93 Difference]: Finished difference Result 285 states and 286 transitions. [2018-07-25 08:42:33,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:42:33,645 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 276 [2018-07-25 08:42:33,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:33,646 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:42:33,646 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 08:42:33,648 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8372 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:42:33,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 08:42:33,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2018-07-25 08:42:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 08:42:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-07-25 08:42:33,680 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 276 [2018-07-25 08:42:33,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:33,680 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-07-25 08:42:33,680 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:42:33,680 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-07-25 08:42:33,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 08:42:33,681 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:33,681 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 91, 1, 1, 1, 1] [2018-07-25 08:42:33,681 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:33,681 INFO L82 PathProgramCache]: Analyzing trace with hash 637782266, now seen corresponding path program 181 times [2018-07-25 08:42:33,681 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 12558 backedges. 8372 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:34,419 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:34,419 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:42:34,419 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:42:34,420 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:42:34,421 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8741, Invalid=25669, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:42:34,422 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 186 states. [2018-07-25 08:42:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:35,873 INFO L93 Difference]: Finished difference Result 467 states and 469 transitions. [2018-07-25 08:42:35,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:42:35,873 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 278 [2018-07-25 08:42:35,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:35,874 INFO L225 Difference]: With dead ends: 467 [2018-07-25 08:42:35,874 INFO L226 Difference]: Without dead ends: 280 [2018-07-25 08:42:35,876 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12467 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17481, Invalid=59525, Unknown=0, NotChecked=0, Total=77006 [2018-07-25 08:42:35,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-07-25 08:42:35,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2018-07-25 08:42:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-07-25 08:42:35,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2018-07-25 08:42:35,914 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 278 [2018-07-25 08:42:35,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:35,914 INFO L472 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2018-07-25 08:42:35,914 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:42:35,914 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2018-07-25 08:42:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-07-25 08:42:35,915 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:35,915 INFO L354 BasicCegarLoop]: trace histogram [92, 92, 91, 1, 1, 1, 1] [2018-07-25 08:42:35,915 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:35,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1272495181, now seen corresponding path program 182 times [2018-07-25 08:42:35,916 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 12650 backedges. 4278 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:36,388 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:36,388 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:42:36,389 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:42:36,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:42:36,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:42:36,390 INFO L87 Difference]: Start difference. First operand 280 states and 281 transitions. Second operand 96 states. [2018-07-25 08:42:36,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:36,759 INFO L93 Difference]: Finished difference Result 288 states and 289 transitions. [2018-07-25 08:42:36,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:42:36,759 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 279 [2018-07-25 08:42:36,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:36,759 INFO L225 Difference]: With dead ends: 288 [2018-07-25 08:42:36,760 INFO L226 Difference]: Without dead ends: 286 [2018-07-25 08:42:36,761 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8556 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:42:36,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-07-25 08:42:36,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 282. [2018-07-25 08:42:36,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2018-07-25 08:42:36,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 283 transitions. [2018-07-25 08:42:36,795 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 283 transitions. Word has length 279 [2018-07-25 08:42:36,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:36,795 INFO L472 AbstractCegarLoop]: Abstraction has 282 states and 283 transitions. [2018-07-25 08:42:36,795 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:42:36,795 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 283 transitions. [2018-07-25 08:42:36,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-07-25 08:42:36,796 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:36,796 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 92, 1, 1, 1, 1] [2018-07-25 08:42:36,796 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:36,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1197876443, now seen corresponding path program 183 times [2018-07-25 08:42:36,796 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 12834 backedges. 8556 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:37,532 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:37,533 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:42:37,533 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:42:37,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:42:37,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8929, Invalid=26227, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:42:37,535 INFO L87 Difference]: Start difference. First operand 282 states and 283 transitions. Second operand 188 states. [2018-07-25 08:42:38,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:38,447 INFO L93 Difference]: Finished difference Result 472 states and 474 transitions. [2018-07-25 08:42:38,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:42:38,447 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 281 [2018-07-25 08:42:38,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:38,448 INFO L225 Difference]: With dead ends: 472 [2018-07-25 08:42:38,448 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 08:42:38,452 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12742 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17857, Invalid=60823, Unknown=0, NotChecked=0, Total=78680 [2018-07-25 08:42:38,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 08:42:38,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-07-25 08:42:38,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 08:42:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2018-07-25 08:42:38,487 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 281 [2018-07-25 08:42:38,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:38,487 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2018-07-25 08:42:38,487 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:42:38,487 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2018-07-25 08:42:38,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 08:42:38,488 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:38,488 INFO L354 BasicCegarLoop]: trace histogram [93, 93, 92, 1, 1, 1, 1] [2018-07-25 08:42:38,488 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:38,488 INFO L82 PathProgramCache]: Analyzing trace with hash 439124866, now seen corresponding path program 184 times [2018-07-25 08:42:38,488 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:39,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12927 backedges. 4371 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:39,033 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:39,033 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:42:39,033 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:42:39,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:42:39,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:42:39,034 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand 97 states. [2018-07-25 08:42:39,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:39,393 INFO L93 Difference]: Finished difference Result 291 states and 292 transitions. [2018-07-25 08:42:39,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:42:39,393 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 282 [2018-07-25 08:42:39,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:39,394 INFO L225 Difference]: With dead ends: 291 [2018-07-25 08:42:39,394 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 08:42:39,396 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8742 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:42:39,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 08:42:39,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 285. [2018-07-25 08:42:39,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 08:42:39,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 286 transitions. [2018-07-25 08:42:39,430 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 286 transitions. Word has length 282 [2018-07-25 08:42:39,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:39,430 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 286 transitions. [2018-07-25 08:42:39,430 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:42:39,430 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 286 transitions. [2018-07-25 08:42:39,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 08:42:39,431 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:39,431 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 93, 1, 1, 1, 1] [2018-07-25 08:42:39,431 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:39,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1092267242, now seen corresponding path program 185 times [2018-07-25 08:42:39,432 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 13113 backedges. 8742 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:40,150 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:40,151 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:42:40,151 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:42:40,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:42:40,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:42:40,153 INFO L87 Difference]: Start difference. First operand 285 states and 286 transitions. Second operand 190 states. [2018-07-25 08:42:42,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:42,313 INFO L93 Difference]: Finished difference Result 477 states and 479 transitions. [2018-07-25 08:42:42,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:42:42,313 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 284 [2018-07-25 08:42:42,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:42,314 INFO L225 Difference]: With dead ends: 477 [2018-07-25 08:42:42,314 INFO L226 Difference]: Without dead ends: 286 [2018-07-25 08:42:42,320 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13020 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18237, Invalid=62135, Unknown=0, NotChecked=0, Total=80372 [2018-07-25 08:42:42,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-07-25 08:42:42,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2018-07-25 08:42:42,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-07-25 08:42:42,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 287 transitions. [2018-07-25 08:42:42,355 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 287 transitions. Word has length 284 [2018-07-25 08:42:42,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:42,355 INFO L472 AbstractCegarLoop]: Abstraction has 286 states and 287 transitions. [2018-07-25 08:42:42,355 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:42:42,355 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 287 transitions. [2018-07-25 08:42:42,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-07-25 08:42:42,356 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:42,356 INFO L354 BasicCegarLoop]: trace histogram [94, 94, 93, 1, 1, 1, 1] [2018-07-25 08:42:42,356 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:42,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1536915683, now seen corresponding path program 186 times [2018-07-25 08:42:42,356 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 13207 backedges. 4465 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:42,864 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:42,865 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:42:42,865 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:42:42,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:42:42,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:42:42,866 INFO L87 Difference]: Start difference. First operand 286 states and 287 transitions. Second operand 98 states. [2018-07-25 08:42:43,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:43,273 INFO L93 Difference]: Finished difference Result 294 states and 295 transitions. [2018-07-25 08:42:43,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:42:43,273 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 285 [2018-07-25 08:42:43,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:43,274 INFO L225 Difference]: With dead ends: 294 [2018-07-25 08:42:43,274 INFO L226 Difference]: Without dead ends: 292 [2018-07-25 08:42:43,276 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8930 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:42:43,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-07-25 08:42:43,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 288. [2018-07-25 08:42:43,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-07-25 08:42:43,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2018-07-25 08:42:43,332 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 285 [2018-07-25 08:42:43,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:43,333 INFO L472 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2018-07-25 08:42:43,333 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:42:43,333 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2018-07-25 08:42:43,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-07-25 08:42:43,334 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:43,334 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 94, 1, 1, 1, 1] [2018-07-25 08:42:43,335 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:43,335 INFO L82 PathProgramCache]: Analyzing trace with hash -492712437, now seen corresponding path program 187 times [2018-07-25 08:42:43,335 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:44,208 INFO L134 CoverageAnalysis]: Checked inductivity of 13395 backedges. 8930 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:44,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:44,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:42:44,209 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:42:44,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:42:44,211 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9311, Invalid=27361, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:42:44,212 INFO L87 Difference]: Start difference. First operand 288 states and 289 transitions. Second operand 192 states. [2018-07-25 08:42:45,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:45,429 INFO L93 Difference]: Finished difference Result 482 states and 484 transitions. [2018-07-25 08:42:45,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:42:45,429 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 287 [2018-07-25 08:42:45,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:45,429 INFO L225 Difference]: With dead ends: 482 [2018-07-25 08:42:45,430 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 08:42:45,434 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13301 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18621, Invalid=63461, Unknown=0, NotChecked=0, Total=82082 [2018-07-25 08:42:45,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 08:42:45,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-25 08:42:45,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 08:42:45,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2018-07-25 08:42:45,469 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 287 [2018-07-25 08:42:45,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:45,469 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2018-07-25 08:42:45,469 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:42:45,469 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2018-07-25 08:42:45,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 08:42:45,470 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:45,470 INFO L354 BasicCegarLoop]: trace histogram [95, 95, 94, 1, 1, 1, 1] [2018-07-25 08:42:45,470 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:45,470 INFO L82 PathProgramCache]: Analyzing trace with hash 349852530, now seen corresponding path program 188 times [2018-07-25 08:42:45,471 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 13490 backedges. 4560 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:45,931 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:45,931 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:42:45,932 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:42:45,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:42:45,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:42:45,933 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand 99 states. [2018-07-25 08:42:46,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:46,324 INFO L93 Difference]: Finished difference Result 297 states and 298 transitions. [2018-07-25 08:42:46,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:42:46,324 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 288 [2018-07-25 08:42:46,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:46,325 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:42:46,325 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 08:42:46,327 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:42:46,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 08:42:46,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 291. [2018-07-25 08:42:46,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 08:42:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2018-07-25 08:42:46,365 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 288 [2018-07-25 08:42:46,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:46,366 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2018-07-25 08:42:46,366 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:42:46,366 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2018-07-25 08:42:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 08:42:46,366 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:46,367 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 95, 1, 1, 1, 1] [2018-07-25 08:42:46,367 INFO L415 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:46,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1200898266, now seen corresponding path program 189 times [2018-07-25 08:42:46,367 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:47,204 INFO L134 CoverageAnalysis]: Checked inductivity of 13680 backedges. 9120 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:47,204 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:47,205 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:42:47,205 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:42:47,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:42:47,208 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9505, Invalid=27937, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:42:47,209 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 194 states. [2018-07-25 08:42:49,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:49,384 INFO L93 Difference]: Finished difference Result 487 states and 489 transitions. [2018-07-25 08:42:49,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:42:49,384 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 290 [2018-07-25 08:42:49,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:49,384 INFO L225 Difference]: With dead ends: 487 [2018-07-25 08:42:49,384 INFO L226 Difference]: Without dead ends: 292 [2018-07-25 08:42:49,389 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13585 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=19009, Invalid=64801, Unknown=0, NotChecked=0, Total=83810 [2018-07-25 08:42:49,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-07-25 08:42:49,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2018-07-25 08:42:49,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-07-25 08:42:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 293 transitions. [2018-07-25 08:42:49,424 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 293 transitions. Word has length 290 [2018-07-25 08:42:49,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:49,424 INFO L472 AbstractCegarLoop]: Abstraction has 292 states and 293 transitions. [2018-07-25 08:42:49,424 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:42:49,424 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 293 transitions. [2018-07-25 08:42:49,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-07-25 08:42:49,425 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:49,425 INFO L354 BasicCegarLoop]: trace histogram [96, 96, 95, 1, 1, 1, 1] [2018-07-25 08:42:49,425 INFO L415 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:49,426 INFO L82 PathProgramCache]: Analyzing trace with hash -2030014957, now seen corresponding path program 190 times [2018-07-25 08:42:49,426 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 13776 backedges. 4656 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:49,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:49,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:42:49,889 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:42:49,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:42:49,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:42:49,891 INFO L87 Difference]: Start difference. First operand 292 states and 293 transitions. Second operand 100 states. [2018-07-25 08:42:50,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:50,330 INFO L93 Difference]: Finished difference Result 300 states and 301 transitions. [2018-07-25 08:42:50,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:42:50,331 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 291 [2018-07-25 08:42:50,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:50,331 INFO L225 Difference]: With dead ends: 300 [2018-07-25 08:42:50,331 INFO L226 Difference]: Without dead ends: 298 [2018-07-25 08:42:50,334 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9312 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:42:50,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-07-25 08:42:50,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 294. [2018-07-25 08:42:50,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-07-25 08:42:50,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 295 transitions. [2018-07-25 08:42:50,372 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 295 transitions. Word has length 291 [2018-07-25 08:42:50,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:50,372 INFO L472 AbstractCegarLoop]: Abstraction has 294 states and 295 transitions. [2018-07-25 08:42:50,372 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:42:50,373 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 295 transitions. [2018-07-25 08:42:50,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-07-25 08:42:50,374 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:50,374 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 96, 1, 1, 1, 1] [2018-07-25 08:42:50,374 INFO L415 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:50,374 INFO L82 PathProgramCache]: Analyzing trace with hash -929155269, now seen corresponding path program 191 times [2018-07-25 08:42:50,374 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 13968 backedges. 9312 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:51,240 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:51,240 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:42:51,240 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:42:51,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:42:51,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9701, Invalid=28519, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:42:51,243 INFO L87 Difference]: Start difference. First operand 294 states and 295 transitions. Second operand 196 states. [2018-07-25 08:42:53,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:53,487 INFO L93 Difference]: Finished difference Result 492 states and 494 transitions. [2018-07-25 08:42:53,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:42:53,487 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 293 [2018-07-25 08:42:53,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:53,488 INFO L225 Difference]: With dead ends: 492 [2018-07-25 08:42:53,488 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 08:42:53,492 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13872 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=19401, Invalid=66155, Unknown=0, NotChecked=0, Total=85556 [2018-07-25 08:42:53,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 08:42:53,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-07-25 08:42:53,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 08:42:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2018-07-25 08:42:53,528 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 293 [2018-07-25 08:42:53,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:53,528 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2018-07-25 08:42:53,528 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:42:53,528 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2018-07-25 08:42:53,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 08:42:53,529 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:53,529 INFO L354 BasicCegarLoop]: trace histogram [97, 97, 96, 1, 1, 1, 1] [2018-07-25 08:42:53,529 INFO L415 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:53,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1447088994, now seen corresponding path program 192 times [2018-07-25 08:42:53,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 14065 backedges. 4753 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:54,002 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:54,002 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:42:54,002 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:42:54,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:42:54,003 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:42:54,003 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand 101 states. [2018-07-25 08:42:54,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:54,394 INFO L93 Difference]: Finished difference Result 303 states and 304 transitions. [2018-07-25 08:42:54,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:42:54,394 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 294 [2018-07-25 08:42:54,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:54,395 INFO L225 Difference]: With dead ends: 303 [2018-07-25 08:42:54,395 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 08:42:54,397 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9506 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:42:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 08:42:54,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 297. [2018-07-25 08:42:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 08:42:54,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2018-07-25 08:42:54,433 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 294 [2018-07-25 08:42:54,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:54,433 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2018-07-25 08:42:54,433 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:42:54,434 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2018-07-25 08:42:54,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 08:42:54,434 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:54,434 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 97, 1, 1, 1, 1] [2018-07-25 08:42:54,435 INFO L415 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:54,435 INFO L82 PathProgramCache]: Analyzing trace with hash -916814646, now seen corresponding path program 193 times [2018-07-25 08:42:54,435 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 14259 backedges. 9506 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:55,341 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:55,341 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:42:55,341 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:42:55,342 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:42:55,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9899, Invalid=29107, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:42:55,343 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand 198 states. [2018-07-25 08:42:57,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:57,516 INFO L93 Difference]: Finished difference Result 497 states and 499 transitions. [2018-07-25 08:42:57,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:42:57,516 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 296 [2018-07-25 08:42:57,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:57,516 INFO L225 Difference]: With dead ends: 497 [2018-07-25 08:42:57,516 INFO L226 Difference]: Without dead ends: 298 [2018-07-25 08:42:57,520 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14162 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=19797, Invalid=67523, Unknown=0, NotChecked=0, Total=87320 [2018-07-25 08:42:57,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-07-25 08:42:57,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2018-07-25 08:42:57,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-07-25 08:42:57,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 299 transitions. [2018-07-25 08:42:57,557 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 299 transitions. Word has length 296 [2018-07-25 08:42:57,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:57,557 INFO L472 AbstractCegarLoop]: Abstraction has 298 states and 299 transitions. [2018-07-25 08:42:57,557 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:42:57,557 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 299 transitions. [2018-07-25 08:42:57,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-07-25 08:42:57,558 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:57,558 INFO L354 BasicCegarLoop]: trace histogram [98, 98, 97, 1, 1, 1, 1] [2018-07-25 08:42:57,558 INFO L415 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:57,559 INFO L82 PathProgramCache]: Analyzing trace with hash 125051715, now seen corresponding path program 194 times [2018-07-25 08:42:57,559 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 14357 backedges. 4851 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:58,069 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:58,069 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:42:58,070 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:42:58,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:42:58,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:42:58,071 INFO L87 Difference]: Start difference. First operand 298 states and 299 transitions. Second operand 102 states. [2018-07-25 08:42:58,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:58,508 INFO L93 Difference]: Finished difference Result 306 states and 307 transitions. [2018-07-25 08:42:58,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:42:58,508 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 297 [2018-07-25 08:42:58,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:58,508 INFO L225 Difference]: With dead ends: 306 [2018-07-25 08:42:58,508 INFO L226 Difference]: Without dead ends: 304 [2018-07-25 08:42:58,510 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9702 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:42:58,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-07-25 08:42:58,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 300. [2018-07-25 08:42:58,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-07-25 08:42:58,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 301 transitions. [2018-07-25 08:42:58,547 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 301 transitions. Word has length 297 [2018-07-25 08:42:58,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:58,547 INFO L472 AbstractCegarLoop]: Abstraction has 300 states and 301 transitions. [2018-07-25 08:42:58,547 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:42:58,548 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 301 transitions. [2018-07-25 08:42:58,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-07-25 08:42:58,548 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:58,548 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 98, 1, 1, 1, 1] [2018-07-25 08:42:58,548 INFO L415 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:58,549 INFO L82 PathProgramCache]: Analyzing trace with hash -84320149, now seen corresponding path program 195 times [2018-07-25 08:42:58,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:59,416 INFO L134 CoverageAnalysis]: Checked inductivity of 14553 backedges. 9702 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:59,417 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:59,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:42:59,417 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:42:59,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:42:59,419 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10099, Invalid=29701, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:42:59,419 INFO L87 Difference]: Start difference. First operand 300 states and 301 transitions. Second operand 200 states. [2018-07-25 08:43:01,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:01,751 INFO L93 Difference]: Finished difference Result 502 states and 504 transitions. [2018-07-25 08:43:01,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:43:01,752 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 299 [2018-07-25 08:43:01,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:01,752 INFO L225 Difference]: With dead ends: 502 [2018-07-25 08:43:01,752 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 08:43:01,757 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14455 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=20197, Invalid=68905, Unknown=0, NotChecked=0, Total=89102 [2018-07-25 08:43:01,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 08:43:01,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-25 08:43:01,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 08:43:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2018-07-25 08:43:01,794 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 299 [2018-07-25 08:43:01,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:01,794 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 302 transitions. [2018-07-25 08:43:01,794 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:43:01,795 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 302 transitions. [2018-07-25 08:43:01,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 08:43:01,795 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:01,795 INFO L354 BasicCegarLoop]: trace histogram [99, 99, 98, 1, 1, 1, 1] [2018-07-25 08:43:01,796 INFO L415 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:01,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1572207790, now seen corresponding path program 196 times [2018-07-25 08:43:01,796 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 14652 backedges. 4950 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:02,308 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:02,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:43:02,308 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:43:02,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:43:02,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:43:02,309 INFO L87 Difference]: Start difference. First operand 301 states and 302 transitions. Second operand 103 states. [2018-07-25 08:43:02,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:02,724 INFO L93 Difference]: Finished difference Result 309 states and 310 transitions. [2018-07-25 08:43:02,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:43:02,724 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 300 [2018-07-25 08:43:02,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:02,725 INFO L225 Difference]: With dead ends: 309 [2018-07-25 08:43:02,725 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 08:43:02,727 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9900 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:43:02,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 08:43:02,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2018-07-25 08:43:02,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 08:43:02,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2018-07-25 08:43:02,765 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 300 [2018-07-25 08:43:02,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:02,765 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2018-07-25 08:43:02,765 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:43:02,765 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2018-07-25 08:43:02,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 08:43:02,766 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:02,766 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 99, 1, 1, 1, 1] [2018-07-25 08:43:02,766 INFO L415 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:02,767 INFO L82 PathProgramCache]: Analyzing trace with hash 936868026, now seen corresponding path program 197 times [2018-07-25 08:43:02,767 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 14850 backedges. 9900 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:03,683 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:03,683 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:43:03,684 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:43:03,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:43:03,685 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10301, Invalid=30301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:43:03,685 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand 202 states. [2018-07-25 08:43:06,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:06,032 INFO L93 Difference]: Finished difference Result 507 states and 509 transitions. [2018-07-25 08:43:06,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:43:06,032 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 302 [2018-07-25 08:43:06,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:06,033 INFO L225 Difference]: With dead ends: 507 [2018-07-25 08:43:06,033 INFO L226 Difference]: Without dead ends: 304 [2018-07-25 08:43:06,037 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14751 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=20601, Invalid=70301, Unknown=0, NotChecked=0, Total=90902 [2018-07-25 08:43:06,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-07-25 08:43:06,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2018-07-25 08:43:06,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-07-25 08:43:06,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2018-07-25 08:43:06,075 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 302 [2018-07-25 08:43:06,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:06,075 INFO L472 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2018-07-25 08:43:06,075 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:43:06,075 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2018-07-25 08:43:06,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-07-25 08:43:06,076 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:06,076 INFO L354 BasicCegarLoop]: trace histogram [100, 100, 99, 1, 1, 1, 1] [2018-07-25 08:43:06,076 INFO L415 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:06,076 INFO L82 PathProgramCache]: Analyzing trace with hash -661350285, now seen corresponding path program 198 times [2018-07-25 08:43:06,076 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 14950 backedges. 5050 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:06,587 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:06,587 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:43:06,587 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:43:06,588 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:43:06,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:43:06,588 INFO L87 Difference]: Start difference. First operand 304 states and 305 transitions. Second operand 104 states. [2018-07-25 08:43:07,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:07,011 INFO L93 Difference]: Finished difference Result 312 states and 313 transitions. [2018-07-25 08:43:07,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:43:07,011 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 303 [2018-07-25 08:43:07,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:07,012 INFO L225 Difference]: With dead ends: 312 [2018-07-25 08:43:07,012 INFO L226 Difference]: Without dead ends: 310 [2018-07-25 08:43:07,014 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:43:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-07-25 08:43:07,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 306. [2018-07-25 08:43:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-07-25 08:43:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 307 transitions. [2018-07-25 08:43:07,052 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 307 transitions. Word has length 303 [2018-07-25 08:43:07,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:07,052 INFO L472 AbstractCegarLoop]: Abstraction has 306 states and 307 transitions. [2018-07-25 08:43:07,052 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:43:07,052 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 307 transitions. [2018-07-25 08:43:07,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-07-25 08:43:07,053 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:07,053 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 100, 1, 1, 1, 1] [2018-07-25 08:43:07,053 INFO L415 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:07,054 INFO L82 PathProgramCache]: Analyzing trace with hash 97601947, now seen corresponding path program 199 times [2018-07-25 08:43:07,054 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 10100 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:08,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:08,019 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:43:08,019 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:43:08,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:43:08,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10505, Invalid=30907, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:43:08,021 INFO L87 Difference]: Start difference. First operand 306 states and 307 transitions. Second operand 204 states. [2018-07-25 08:43:10,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:10,391 INFO L93 Difference]: Finished difference Result 512 states and 514 transitions. [2018-07-25 08:43:10,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:43:10,391 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 305 [2018-07-25 08:43:10,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:10,391 INFO L225 Difference]: With dead ends: 512 [2018-07-25 08:43:10,391 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 08:43:10,395 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15050 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=21009, Invalid=71711, Unknown=0, NotChecked=0, Total=92720 [2018-07-25 08:43:10,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 08:43:10,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-07-25 08:43:10,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 08:43:10,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2018-07-25 08:43:10,434 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 305 [2018-07-25 08:43:10,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:10,434 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2018-07-25 08:43:10,434 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:43:10,434 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2018-07-25 08:43:10,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 08:43:10,435 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:10,435 INFO L354 BasicCegarLoop]: trace histogram [101, 101, 100, 1, 1, 1, 1] [2018-07-25 08:43:10,436 INFO L415 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:10,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1583342402, now seen corresponding path program 200 times [2018-07-25 08:43:10,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 15251 backedges. 5151 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:10,964 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:10,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:43:10,964 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:43:10,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:43:10,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:43:10,965 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 105 states. [2018-07-25 08:43:11,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:11,389 INFO L93 Difference]: Finished difference Result 315 states and 316 transitions. [2018-07-25 08:43:11,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:43:11,389 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 306 [2018-07-25 08:43:11,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:11,390 INFO L225 Difference]: With dead ends: 315 [2018-07-25 08:43:11,390 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 08:43:11,392 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10302 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16068, Invalid=26574, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:43:11,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 08:43:11,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 309. [2018-07-25 08:43:11,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 08:43:11,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 310 transitions. [2018-07-25 08:43:11,431 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 310 transitions. Word has length 306 [2018-07-25 08:43:11,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:11,431 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 310 transitions. [2018-07-25 08:43:11,431 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:43:11,431 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 310 transitions. [2018-07-25 08:43:11,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 08:43:11,432 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:11,432 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 101, 1, 1, 1, 1] [2018-07-25 08:43:11,432 INFO L415 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:11,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1173691562, now seen corresponding path program 201 times [2018-07-25 08:43:11,433 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 10302 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:12,353 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:12,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:43:12,354 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:43:12,355 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:43:12,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10711, Invalid=31519, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:43:12,356 INFO L87 Difference]: Start difference. First operand 309 states and 310 transitions. Second operand 206 states. [2018-07-25 08:43:14,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:14,866 INFO L93 Difference]: Finished difference Result 517 states and 519 transitions. [2018-07-25 08:43:14,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:43:14,866 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 308 [2018-07-25 08:43:14,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:14,867 INFO L225 Difference]: With dead ends: 517 [2018-07-25 08:43:14,867 INFO L226 Difference]: Without dead ends: 310 [2018-07-25 08:43:14,871 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15352 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=21421, Invalid=73135, Unknown=0, NotChecked=0, Total=94556 [2018-07-25 08:43:14,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-07-25 08:43:14,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2018-07-25 08:43:14,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2018-07-25 08:43:14,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 311 transitions. [2018-07-25 08:43:14,909 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 311 transitions. Word has length 308 [2018-07-25 08:43:14,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:14,910 INFO L472 AbstractCegarLoop]: Abstraction has 310 states and 311 transitions. [2018-07-25 08:43:14,910 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:43:14,910 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 311 transitions. [2018-07-25 08:43:14,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-07-25 08:43:14,911 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:14,911 INFO L354 BasicCegarLoop]: trace histogram [102, 102, 101, 1, 1, 1, 1] [2018-07-25 08:43:14,911 INFO L415 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:14,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1065366109, now seen corresponding path program 202 times [2018-07-25 08:43:14,911 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 15555 backedges. 5253 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:15,446 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:15,446 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:43:15,447 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:43:15,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:43:15,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:43:15,448 INFO L87 Difference]: Start difference. First operand 310 states and 311 transitions. Second operand 106 states. [2018-07-25 08:43:15,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:15,870 INFO L93 Difference]: Finished difference Result 318 states and 319 transitions. [2018-07-25 08:43:15,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:43:15,870 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 309 [2018-07-25 08:43:15,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:15,871 INFO L225 Difference]: With dead ends: 318 [2018-07-25 08:43:15,871 INFO L226 Difference]: Without dead ends: 316 [2018-07-25 08:43:15,873 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10506 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16380, Invalid=27092, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:43:15,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-07-25 08:43:15,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 312. [2018-07-25 08:43:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-07-25 08:43:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2018-07-25 08:43:15,913 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 309 [2018-07-25 08:43:15,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:15,913 INFO L472 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2018-07-25 08:43:15,913 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:43:15,913 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2018-07-25 08:43:15,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-07-25 08:43:15,914 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:15,914 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 102, 1, 1, 1, 1] [2018-07-25 08:43:15,914 INFO L415 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:15,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1614548277, now seen corresponding path program 203 times [2018-07-25 08:43:15,914 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 15759 backedges. 10506 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:16,824 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:16,824 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:43:16,825 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:43:16,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:43:16,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10919, Invalid=32137, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:43:16,827 INFO L87 Difference]: Start difference. First operand 312 states and 313 transitions. Second operand 208 states. [2018-07-25 08:43:19,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:19,403 INFO L93 Difference]: Finished difference Result 522 states and 524 transitions. [2018-07-25 08:43:19,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:43:19,403 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 311 [2018-07-25 08:43:19,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:19,404 INFO L225 Difference]: With dead ends: 522 [2018-07-25 08:43:19,404 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 08:43:19,409 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15657 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=21837, Invalid=74573, Unknown=0, NotChecked=0, Total=96410 [2018-07-25 08:43:19,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 08:43:19,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-25 08:43:19,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 08:43:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2018-07-25 08:43:19,449 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 311 [2018-07-25 08:43:19,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:19,449 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2018-07-25 08:43:19,449 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:43:19,449 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2018-07-25 08:43:19,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 08:43:19,450 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:19,450 INFO L354 BasicCegarLoop]: trace histogram [103, 103, 102, 1, 1, 1, 1] [2018-07-25 08:43:19,450 INFO L415 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:19,450 INFO L82 PathProgramCache]: Analyzing trace with hash -244550862, now seen corresponding path program 204 times [2018-07-25 08:43:19,450 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 15862 backedges. 5356 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:19,997 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:19,998 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:43:19,998 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:43:19,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:43:19,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:43:19,999 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand 107 states. [2018-07-25 08:43:20,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:20,434 INFO L93 Difference]: Finished difference Result 321 states and 322 transitions. [2018-07-25 08:43:20,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:43:20,434 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 312 [2018-07-25 08:43:20,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:20,435 INFO L225 Difference]: With dead ends: 321 [2018-07-25 08:43:20,435 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 08:43:20,437 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10712 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:43:20,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 08:43:20,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2018-07-25 08:43:20,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 08:43:20,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2018-07-25 08:43:20,477 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 312 [2018-07-25 08:43:20,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:20,477 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2018-07-25 08:43:20,477 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:43:20,477 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2018-07-25 08:43:20,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 08:43:20,478 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:20,478 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 103, 1, 1, 1, 1] [2018-07-25 08:43:20,478 INFO L415 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:20,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1209888922, now seen corresponding path program 205 times [2018-07-25 08:43:20,479 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16068 backedges. 10712 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:21,422 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:21,422 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:43:21,422 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:43:21,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:43:21,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11129, Invalid=32761, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:43:21,425 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand 210 states. [2018-07-25 08:43:24,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:24,037 INFO L93 Difference]: Finished difference Result 527 states and 529 transitions. [2018-07-25 08:43:24,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:43:24,037 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 314 [2018-07-25 08:43:24,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:24,038 INFO L225 Difference]: With dead ends: 527 [2018-07-25 08:43:24,038 INFO L226 Difference]: Without dead ends: 316 [2018-07-25 08:43:24,042 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15965 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22257, Invalid=76025, Unknown=0, NotChecked=0, Total=98282 [2018-07-25 08:43:24,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-07-25 08:43:24,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2018-07-25 08:43:24,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-07-25 08:43:24,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 317 transitions. [2018-07-25 08:43:24,083 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 317 transitions. Word has length 314 [2018-07-25 08:43:24,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:24,083 INFO L472 AbstractCegarLoop]: Abstraction has 316 states and 317 transitions. [2018-07-25 08:43:24,083 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:43:24,083 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 317 transitions. [2018-07-25 08:43:24,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-07-25 08:43:24,084 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:24,084 INFO L354 BasicCegarLoop]: trace histogram [104, 104, 103, 1, 1, 1, 1] [2018-07-25 08:43:24,084 INFO L415 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:24,084 INFO L82 PathProgramCache]: Analyzing trace with hash -271334701, now seen corresponding path program 206 times [2018-07-25 08:43:24,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 16172 backedges. 5460 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:24,626 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:24,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:43:24,626 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:43:24,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:43:24,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:43:24,627 INFO L87 Difference]: Start difference. First operand 316 states and 317 transitions. Second operand 108 states. [2018-07-25 08:43:25,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:25,096 INFO L93 Difference]: Finished difference Result 324 states and 325 transitions. [2018-07-25 08:43:25,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:43:25,097 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 315 [2018-07-25 08:43:25,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:25,097 INFO L225 Difference]: With dead ends: 324 [2018-07-25 08:43:25,097 INFO L226 Difference]: Without dead ends: 322 [2018-07-25 08:43:25,100 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10920 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17013, Invalid=28143, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:43:25,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-07-25 08:43:25,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 318. [2018-07-25 08:43:25,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-07-25 08:43:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 319 transitions. [2018-07-25 08:43:25,143 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 319 transitions. Word has length 315 [2018-07-25 08:43:25,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:25,143 INFO L472 AbstractCegarLoop]: Abstraction has 318 states and 319 transitions. [2018-07-25 08:43:25,143 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:43:25,143 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 319 transitions. [2018-07-25 08:43:25,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-07-25 08:43:25,144 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:25,144 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 104, 1, 1, 1, 1] [2018-07-25 08:43:25,144 INFO L415 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:25,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1240423419, now seen corresponding path program 207 times [2018-07-25 08:43:25,145 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:26,156 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 10920 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:26,156 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:26,157 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:43:26,157 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:43:26,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:43:26,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11341, Invalid=33391, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:43:26,160 INFO L87 Difference]: Start difference. First operand 318 states and 319 transitions. Second operand 212 states. [2018-07-25 08:43:28,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:28,089 INFO L93 Difference]: Finished difference Result 532 states and 534 transitions. [2018-07-25 08:43:28,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:43:28,089 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 317 [2018-07-25 08:43:28,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:28,090 INFO L225 Difference]: With dead ends: 532 [2018-07-25 08:43:28,090 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 08:43:28,094 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16276 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22681, Invalid=77491, Unknown=0, NotChecked=0, Total=100172 [2018-07-25 08:43:28,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 08:43:28,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-07-25 08:43:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 08:43:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2018-07-25 08:43:28,135 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 317 [2018-07-25 08:43:28,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:28,136 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2018-07-25 08:43:28,136 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:43:28,136 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2018-07-25 08:43:28,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 08:43:28,137 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:28,137 INFO L354 BasicCegarLoop]: trace histogram [105, 105, 104, 1, 1, 1, 1] [2018-07-25 08:43:28,137 INFO L415 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:28,137 INFO L82 PathProgramCache]: Analyzing trace with hash 601469730, now seen corresponding path program 208 times [2018-07-25 08:43:28,137 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 16485 backedges. 5565 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:28,755 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:28,755 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:43:28,755 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:43:28,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:43:28,756 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:43:28,756 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand 109 states. [2018-07-25 08:43:29,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:29,258 INFO L93 Difference]: Finished difference Result 327 states and 328 transitions. [2018-07-25 08:43:29,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:43:29,258 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 318 [2018-07-25 08:43:29,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:29,259 INFO L225 Difference]: With dead ends: 327 [2018-07-25 08:43:29,259 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 08:43:29,262 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17334, Invalid=28676, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:43:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 08:43:29,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 321. [2018-07-25 08:43:29,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 08:43:29,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2018-07-25 08:43:29,305 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 318 [2018-07-25 08:43:29,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:29,306 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2018-07-25 08:43:29,306 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:43:29,306 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2018-07-25 08:43:29,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 08:43:29,307 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:29,308 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 105, 1, 1, 1, 1] [2018-07-25 08:43:29,308 INFO L415 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:29,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1808108406, now seen corresponding path program 209 times [2018-07-25 08:43:29,308 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 16695 backedges. 11130 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:30,416 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:30,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 08:43:30,417 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 08:43:30,419 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 08:43:30,421 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11555, Invalid=34027, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:43:30,421 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand 214 states. [2018-07-25 08:43:32,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:32,407 INFO L93 Difference]: Finished difference Result 537 states and 539 transitions. [2018-07-25 08:43:32,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:43:32,408 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 320 [2018-07-25 08:43:32,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:32,408 INFO L225 Difference]: With dead ends: 537 [2018-07-25 08:43:32,408 INFO L226 Difference]: Without dead ends: 322 [2018-07-25 08:43:32,413 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16590 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=23109, Invalid=78971, Unknown=0, NotChecked=0, Total=102080 [2018-07-25 08:43:32,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-07-25 08:43:32,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-07-25 08:43:32,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-07-25 08:43:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 323 transitions. [2018-07-25 08:43:32,457 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 323 transitions. Word has length 320 [2018-07-25 08:43:32,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:32,457 INFO L472 AbstractCegarLoop]: Abstraction has 322 states and 323 transitions. [2018-07-25 08:43:32,457 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 08:43:32,457 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 323 transitions. [2018-07-25 08:43:32,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-07-25 08:43:32,458 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:32,458 INFO L354 BasicCegarLoop]: trace histogram [106, 106, 105, 1, 1, 1, 1] [2018-07-25 08:43:32,458 INFO L415 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:32,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1582401533, now seen corresponding path program 210 times [2018-07-25 08:43:32,459 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 16801 backedges. 5671 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:33,046 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:33,046 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:43:33,046 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:43:33,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:43:33,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:43:33,048 INFO L87 Difference]: Start difference. First operand 322 states and 323 transitions. Second operand 110 states. [2018-07-25 08:43:33,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:33,567 INFO L93 Difference]: Finished difference Result 330 states and 331 transitions. [2018-07-25 08:43:33,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 08:43:33,567 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 321 [2018-07-25 08:43:33,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:33,567 INFO L225 Difference]: With dead ends: 330 [2018-07-25 08:43:33,567 INFO L226 Difference]: Without dead ends: 328 [2018-07-25 08:43:33,569 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11342 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17658, Invalid=29214, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:43:33,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-07-25 08:43:33,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2018-07-25 08:43:33,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-07-25 08:43:33,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 325 transitions. [2018-07-25 08:43:33,611 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 325 transitions. Word has length 321 [2018-07-25 08:43:33,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:33,611 INFO L472 AbstractCegarLoop]: Abstraction has 324 states and 325 transitions. [2018-07-25 08:43:33,611 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:43:33,611 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 325 transitions. [2018-07-25 08:43:33,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-07-25 08:43:33,612 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:33,612 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 106, 1, 1, 1, 1] [2018-07-25 08:43:33,612 INFO L415 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:33,613 INFO L82 PathProgramCache]: Analyzing trace with hash -269384405, now seen corresponding path program 211 times [2018-07-25 08:43:33,613 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 17013 backedges. 11342 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:34,573 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:34,573 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 08:43:34,574 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 08:43:34,575 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 08:43:34,577 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11771, Invalid=34669, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:43:34,577 INFO L87 Difference]: Start difference. First operand 324 states and 325 transitions. Second operand 216 states. [2018-07-25 08:43:36,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:36,663 INFO L93 Difference]: Finished difference Result 542 states and 544 transitions. [2018-07-25 08:43:36,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 08:43:36,663 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 323 [2018-07-25 08:43:36,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:36,664 INFO L225 Difference]: With dead ends: 542 [2018-07-25 08:43:36,664 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 08:43:36,671 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16907 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=23541, Invalid=80465, Unknown=0, NotChecked=0, Total=104006 [2018-07-25 08:43:36,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 08:43:36,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-25 08:43:36,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 08:43:36,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 326 transitions. [2018-07-25 08:43:36,714 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 326 transitions. Word has length 323 [2018-07-25 08:43:36,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:36,714 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 326 transitions. [2018-07-25 08:43:36,714 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 08:43:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 326 transitions. [2018-07-25 08:43:36,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 08:43:36,715 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:36,715 INFO L354 BasicCegarLoop]: trace histogram [107, 107, 106, 1, 1, 1, 1] [2018-07-25 08:43:36,715 INFO L415 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:36,715 INFO L82 PathProgramCache]: Analyzing trace with hash 2140250898, now seen corresponding path program 212 times [2018-07-25 08:43:36,715 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 17120 backedges. 5778 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:37,373 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:37,373 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:43:37,374 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:43:37,374 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:43:37,374 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:43:37,375 INFO L87 Difference]: Start difference. First operand 325 states and 326 transitions. Second operand 111 states. [2018-07-25 08:43:37,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:37,856 INFO L93 Difference]: Finished difference Result 333 states and 334 transitions. [2018-07-25 08:43:37,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 08:43:37,856 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 324 [2018-07-25 08:43:37,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:37,857 INFO L225 Difference]: With dead ends: 333 [2018-07-25 08:43:37,857 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 08:43:37,859 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11556 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:43:37,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 08:43:37,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2018-07-25 08:43:37,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 08:43:37,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2018-07-25 08:43:37,902 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 324 [2018-07-25 08:43:37,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:37,902 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2018-07-25 08:43:37,902 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:43:37,902 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2018-07-25 08:43:37,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 08:43:37,903 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:37,903 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 107, 1, 1, 1, 1] [2018-07-25 08:43:37,903 INFO L415 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:37,903 INFO L82 PathProgramCache]: Analyzing trace with hash -508155782, now seen corresponding path program 213 times [2018-07-25 08:43:37,903 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 17334 backedges. 11556 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:38,919 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:38,919 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-25 08:43:38,919 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 08:43:38,920 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 08:43:38,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11989, Invalid=35317, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:43:38,922 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 218 states. [2018-07-25 08:43:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:40,228 INFO L93 Difference]: Finished difference Result 547 states and 549 transitions. [2018-07-25 08:43:40,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 08:43:40,228 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 326 [2018-07-25 08:43:40,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:40,229 INFO L225 Difference]: With dead ends: 547 [2018-07-25 08:43:40,229 INFO L226 Difference]: Without dead ends: 328 [2018-07-25 08:43:40,236 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17227 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=23977, Invalid=81973, Unknown=0, NotChecked=0, Total=105950 [2018-07-25 08:43:40,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-07-25 08:43:40,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2018-07-25 08:43:40,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-07-25 08:43:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2018-07-25 08:43:40,287 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 326 [2018-07-25 08:43:40,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:40,287 INFO L472 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2018-07-25 08:43:40,287 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 08:43:40,287 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2018-07-25 08:43:40,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-07-25 08:43:40,288 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:40,288 INFO L354 BasicCegarLoop]: trace histogram [108, 108, 107, 1, 1, 1, 1] [2018-07-25 08:43:40,289 INFO L415 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:40,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1146229453, now seen corresponding path program 214 times [2018-07-25 08:43:40,289 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 17442 backedges. 5886 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:41,026 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:41,027 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:43:41,027 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:43:41,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:43:41,028 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:43:41,028 INFO L87 Difference]: Start difference. First operand 328 states and 329 transitions. Second operand 112 states. [2018-07-25 08:43:41,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:41,532 INFO L93 Difference]: Finished difference Result 336 states and 337 transitions. [2018-07-25 08:43:41,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 08:43:41,532 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 327 [2018-07-25 08:43:41,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:41,533 INFO L225 Difference]: With dead ends: 336 [2018-07-25 08:43:41,533 INFO L226 Difference]: Without dead ends: 334 [2018-07-25 08:43:41,535 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11772 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18315, Invalid=30305, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:43:41,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-07-25 08:43:41,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 330. [2018-07-25 08:43:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-07-25 08:43:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 331 transitions. [2018-07-25 08:43:41,578 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 331 transitions. Word has length 327 [2018-07-25 08:43:41,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:41,578 INFO L472 AbstractCegarLoop]: Abstraction has 330 states and 331 transitions. [2018-07-25 08:43:41,578 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:43:41,578 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 331 transitions. [2018-07-25 08:43:41,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-07-25 08:43:41,579 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:41,579 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 108, 1, 1, 1, 1] [2018-07-25 08:43:41,580 INFO L415 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:41,580 INFO L82 PathProgramCache]: Analyzing trace with hash -2014810533, now seen corresponding path program 215 times [2018-07-25 08:43:41,580 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:42,568 INFO L134 CoverageAnalysis]: Checked inductivity of 17658 backedges. 11772 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:42,568 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:42,568 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-25 08:43:42,568 INFO L451 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-25 08:43:42,571 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-25 08:43:42,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12209, Invalid=35971, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:43:42,574 INFO L87 Difference]: Start difference. First operand 330 states and 331 transitions. Second operand 220 states. [2018-07-25 08:43:44,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:44,807 INFO L93 Difference]: Finished difference Result 552 states and 554 transitions. [2018-07-25 08:43:44,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 08:43:44,807 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 329 [2018-07-25 08:43:44,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:44,808 INFO L225 Difference]: With dead ends: 552 [2018-07-25 08:43:44,808 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 08:43:44,813 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17550 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=24417, Invalid=83495, Unknown=0, NotChecked=0, Total=107912 [2018-07-25 08:43:44,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 08:43:44,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-07-25 08:43:44,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 08:43:44,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2018-07-25 08:43:44,858 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 329 [2018-07-25 08:43:44,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:44,858 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2018-07-25 08:43:44,858 INFO L473 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-25 08:43:44,858 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2018-07-25 08:43:44,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 08:43:44,859 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:44,859 INFO L354 BasicCegarLoop]: trace histogram [109, 109, 108, 1, 1, 1, 1] [2018-07-25 08:43:44,859 INFO L415 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:44,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1342291198, now seen corresponding path program 216 times [2018-07-25 08:43:44,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 17767 backedges. 5995 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:45,589 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:45,589 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:43:45,590 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:43:45,590 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:43:45,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:43:45,591 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand 113 states. [2018-07-25 08:43:46,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:46,091 INFO L93 Difference]: Finished difference Result 339 states and 340 transitions. [2018-07-25 08:43:46,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-25 08:43:46,091 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 330 [2018-07-25 08:43:46,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:46,092 INFO L225 Difference]: With dead ends: 339 [2018-07-25 08:43:46,092 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 08:43:46,094 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11990 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18648, Invalid=30858, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:43:46,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 08:43:46,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 333. [2018-07-25 08:43:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 08:43:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 334 transitions. [2018-07-25 08:43:46,138 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 334 transitions. Word has length 330 [2018-07-25 08:43:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:46,139 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 334 transitions. [2018-07-25 08:43:46,139 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:43:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 334 transitions. [2018-07-25 08:43:46,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 08:43:46,140 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:46,140 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 109, 1, 1, 1, 1] [2018-07-25 08:43:46,140 INFO L415 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:46,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1451586454, now seen corresponding path program 217 times [2018-07-25 08:43:46,140 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 17985 backedges. 11990 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:47,193 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:47,193 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-25 08:43:47,193 INFO L451 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-25 08:43:47,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-25 08:43:47,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12431, Invalid=36631, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:43:47,198 INFO L87 Difference]: Start difference. First operand 333 states and 334 transitions. Second operand 222 states. [2018-07-25 08:43:48,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:48,967 INFO L93 Difference]: Finished difference Result 557 states and 559 transitions. [2018-07-25 08:43:48,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-25 08:43:48,967 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 332 [2018-07-25 08:43:48,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:48,967 INFO L225 Difference]: With dead ends: 557 [2018-07-25 08:43:48,967 INFO L226 Difference]: Without dead ends: 334 [2018-07-25 08:43:48,970 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17876 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=24861, Invalid=85031, Unknown=0, NotChecked=0, Total=109892 [2018-07-25 08:43:48,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-07-25 08:43:49,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2018-07-25 08:43:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-07-25 08:43:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 335 transitions. [2018-07-25 08:43:49,015 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 335 transitions. Word has length 332 [2018-07-25 08:43:49,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:49,015 INFO L472 AbstractCegarLoop]: Abstraction has 334 states and 335 transitions. [2018-07-25 08:43:49,015 INFO L473 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-25 08:43:49,015 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 335 transitions. [2018-07-25 08:43:49,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-07-25 08:43:49,016 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:49,016 INFO L354 BasicCegarLoop]: trace histogram [110, 110, 109, 1, 1, 1, 1] [2018-07-25 08:43:49,016 INFO L415 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:49,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1844453987, now seen corresponding path program 218 times [2018-07-25 08:43:49,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18095 backedges. 6105 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:49,659 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:49,659 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:43:49,659 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:43:49,660 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:43:49,660 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:43:49,661 INFO L87 Difference]: Start difference. First operand 334 states and 335 transitions. Second operand 114 states. [2018-07-25 08:43:50,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:50,175 INFO L93 Difference]: Finished difference Result 342 states and 343 transitions. [2018-07-25 08:43:50,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-25 08:43:50,175 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 333 [2018-07-25 08:43:50,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:50,176 INFO L225 Difference]: With dead ends: 342 [2018-07-25 08:43:50,176 INFO L226 Difference]: Without dead ends: 340 [2018-07-25 08:43:50,181 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18984, Invalid=31416, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:43:50,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-25 08:43:50,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 336. [2018-07-25 08:43:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-07-25 08:43:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2018-07-25 08:43:50,227 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 333 [2018-07-25 08:43:50,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:50,228 INFO L472 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2018-07-25 08:43:50,228 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:43:50,228 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2018-07-25 08:43:50,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-07-25 08:43:50,229 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:50,229 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 110, 1, 1, 1, 1] [2018-07-25 08:43:50,229 INFO L415 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:50,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1301145717, now seen corresponding path program 219 times [2018-07-25 08:43:50,229 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18315 backedges. 12210 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:51,346 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:51,347 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-25 08:43:51,347 INFO L451 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-25 08:43:51,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-25 08:43:51,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12655, Invalid=37297, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:43:51,351 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand 224 states. [2018-07-25 08:43:53,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:53,704 INFO L93 Difference]: Finished difference Result 562 states and 564 transitions. [2018-07-25 08:43:53,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-25 08:43:53,704 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 335 [2018-07-25 08:43:53,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:53,705 INFO L225 Difference]: With dead ends: 562 [2018-07-25 08:43:53,705 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 08:43:53,709 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18205 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=25309, Invalid=86581, Unknown=0, NotChecked=0, Total=111890 [2018-07-25 08:43:53,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 08:43:53,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-25 08:43:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 08:43:53,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2018-07-25 08:43:53,754 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 335 [2018-07-25 08:43:53,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:53,754 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2018-07-25 08:43:53,755 INFO L473 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-25 08:43:53,755 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2018-07-25 08:43:53,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 08:43:53,755 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:53,756 INFO L354 BasicCegarLoop]: trace histogram [111, 111, 110, 1, 1, 1, 1] [2018-07-25 08:43:53,756 INFO L415 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:53,756 INFO L82 PathProgramCache]: Analyzing trace with hash -502689038, now seen corresponding path program 220 times [2018-07-25 08:43:53,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 18426 backedges. 6216 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:54,424 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:54,424 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:43:54,424 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:43:54,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:43:54,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:43:54,425 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand 115 states. [2018-07-25 08:43:54,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:54,969 INFO L93 Difference]: Finished difference Result 345 states and 346 transitions. [2018-07-25 08:43:54,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-07-25 08:43:54,969 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 336 [2018-07-25 08:43:54,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:54,970 INFO L225 Difference]: With dead ends: 345 [2018-07-25 08:43:54,970 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 08:43:54,972 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12432 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:43:54,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 08:43:55,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 339. [2018-07-25 08:43:55,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 08:43:55,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2018-07-25 08:43:55,020 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 336 [2018-07-25 08:43:55,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:55,020 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2018-07-25 08:43:55,020 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:43:55,020 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2018-07-25 08:43:55,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 08:43:55,021 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:55,021 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 111, 1, 1, 1, 1] [2018-07-25 08:43:55,021 INFO L415 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:55,022 INFO L82 PathProgramCache]: Analyzing trace with hash -2047762342, now seen corresponding path program 221 times [2018-07-25 08:43:55,022 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:56,166 INFO L134 CoverageAnalysis]: Checked inductivity of 18648 backedges. 12432 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:56,167 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:56,167 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225] total 225 [2018-07-25 08:43:56,167 INFO L451 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-07-25 08:43:56,168 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-07-25 08:43:56,170 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12881, Invalid=37969, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:43:56,170 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand 226 states. [2018-07-25 08:43:58,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:58,549 INFO L93 Difference]: Finished difference Result 567 states and 569 transitions. [2018-07-25 08:43:58,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-07-25 08:43:58,549 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 338 [2018-07-25 08:43:58,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:58,550 INFO L225 Difference]: With dead ends: 567 [2018-07-25 08:43:58,550 INFO L226 Difference]: Without dead ends: 340 [2018-07-25 08:43:58,554 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18537 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=25761, Invalid=88145, Unknown=0, NotChecked=0, Total=113906 [2018-07-25 08:43:58,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-25 08:43:58,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-25 08:43:58,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-25 08:43:58,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 341 transitions. [2018-07-25 08:43:58,601 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 341 transitions. Word has length 338 [2018-07-25 08:43:58,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:58,601 INFO L472 AbstractCegarLoop]: Abstraction has 340 states and 341 transitions. [2018-07-25 08:43:58,601 INFO L473 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-07-25 08:43:58,601 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 341 transitions. [2018-07-25 08:43:58,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-07-25 08:43:58,602 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:58,602 INFO L354 BasicCegarLoop]: trace histogram [112, 112, 111, 1, 1, 1, 1] [2018-07-25 08:43:58,602 INFO L415 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:58,602 INFO L82 PathProgramCache]: Analyzing trace with hash -753723501, now seen corresponding path program 222 times [2018-07-25 08:43:58,602 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:59,281 INFO L134 CoverageAnalysis]: Checked inductivity of 18760 backedges. 6328 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:59,281 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:59,282 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:43:59,282 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:43:59,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:43:59,283 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:43:59,283 INFO L87 Difference]: Start difference. First operand 340 states and 341 transitions. Second operand 116 states. [2018-07-25 08:43:59,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:59,798 INFO L93 Difference]: Finished difference Result 348 states and 349 transitions. [2018-07-25 08:43:59,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-07-25 08:43:59,798 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 339 [2018-07-25 08:43:59,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:59,799 INFO L225 Difference]: With dead ends: 348 [2018-07-25 08:43:59,799 INFO L226 Difference]: Without dead ends: 346 [2018-07-25 08:43:59,801 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12656 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19665, Invalid=32547, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 08:43:59,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-07-25 08:43:59,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 342. [2018-07-25 08:43:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2018-07-25 08:43:59,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 343 transitions. [2018-07-25 08:43:59,848 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 343 transitions. Word has length 339 [2018-07-25 08:43:59,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:59,849 INFO L472 AbstractCegarLoop]: Abstraction has 342 states and 343 transitions. [2018-07-25 08:43:59,849 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:43:59,849 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 343 transitions. [2018-07-25 08:43:59,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-07-25 08:43:59,850 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:59,850 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 112, 1, 1, 1, 1] [2018-07-25 08:43:59,850 INFO L415 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:59,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1521254587, now seen corresponding path program 223 times [2018-07-25 08:43:59,850 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 18984 backedges. 12656 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:01,027 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:01,027 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227] total 227 [2018-07-25 08:44:01,027 INFO L451 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-07-25 08:44:01,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-07-25 08:44:01,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13109, Invalid=38647, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:44:01,032 INFO L87 Difference]: Start difference. First operand 342 states and 343 transitions. Second operand 228 states. [2018-07-25 08:44:03,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:03,608 INFO L93 Difference]: Finished difference Result 572 states and 574 transitions. [2018-07-25 08:44:03,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-07-25 08:44:03,608 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 341 [2018-07-25 08:44:03,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:03,609 INFO L225 Difference]: With dead ends: 572 [2018-07-25 08:44:03,609 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 08:44:03,617 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18872 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=26217, Invalid=89723, Unknown=0, NotChecked=0, Total=115940 [2018-07-25 08:44:03,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 08:44:03,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-07-25 08:44:03,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 08:44:03,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2018-07-25 08:44:03,673 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 341 [2018-07-25 08:44:03,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:03,673 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2018-07-25 08:44:03,673 INFO L473 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-07-25 08:44:03,673 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2018-07-25 08:44:03,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 08:44:03,674 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:03,675 INFO L354 BasicCegarLoop]: trace histogram [113, 113, 112, 1, 1, 1, 1] [2018-07-25 08:44:03,675 INFO L415 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:03,675 INFO L82 PathProgramCache]: Analyzing trace with hash 605917922, now seen corresponding path program 224 times [2018-07-25 08:44:03,675 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:04,575 INFO L134 CoverageAnalysis]: Checked inductivity of 19097 backedges. 6441 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:04,575 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:04,575 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:44:04,575 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:44:04,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:44:04,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:44:04,576 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand 117 states. [2018-07-25 08:44:05,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:05,112 INFO L93 Difference]: Finished difference Result 351 states and 352 transitions. [2018-07-25 08:44:05,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-07-25 08:44:05,112 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 342 [2018-07-25 08:44:05,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:05,112 INFO L225 Difference]: With dead ends: 351 [2018-07-25 08:44:05,112 INFO L226 Difference]: Without dead ends: 349 [2018-07-25 08:44:05,115 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12882 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20010, Invalid=33120, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 08:44:05,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-25 08:44:05,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 345. [2018-07-25 08:44:05,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 08:44:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2018-07-25 08:44:05,163 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 342 [2018-07-25 08:44:05,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:05,163 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2018-07-25 08:44:05,163 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:44:05,164 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2018-07-25 08:44:05,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 08:44:05,164 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:05,165 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 113, 1, 1, 1, 1] [2018-07-25 08:44:05,165 INFO L415 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:05,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1828363190, now seen corresponding path program 225 times [2018-07-25 08:44:05,165 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:06,278 INFO L134 CoverageAnalysis]: Checked inductivity of 19323 backedges. 12882 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:06,278 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:06,278 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229] total 229 [2018-07-25 08:44:06,279 INFO L451 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-07-25 08:44:06,280 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-07-25 08:44:06,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13339, Invalid=39331, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:44:06,282 INFO L87 Difference]: Start difference. First operand 345 states and 346 transitions. Second operand 230 states. [2018-07-25 08:44:08,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:08,312 INFO L93 Difference]: Finished difference Result 577 states and 579 transitions. [2018-07-25 08:44:08,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-07-25 08:44:08,312 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 344 [2018-07-25 08:44:08,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:08,313 INFO L225 Difference]: With dead ends: 577 [2018-07-25 08:44:08,313 INFO L226 Difference]: Without dead ends: 346 [2018-07-25 08:44:08,318 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 342 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19210 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=26677, Invalid=91315, Unknown=0, NotChecked=0, Total=117992 [2018-07-25 08:44:08,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-07-25 08:44:08,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2018-07-25 08:44:08,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-07-25 08:44:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 347 transitions. [2018-07-25 08:44:08,367 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 347 transitions. Word has length 344 [2018-07-25 08:44:08,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:08,367 INFO L472 AbstractCegarLoop]: Abstraction has 346 states and 347 transitions. [2018-07-25 08:44:08,367 INFO L473 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-07-25 08:44:08,367 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 347 transitions. [2018-07-25 08:44:08,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-07-25 08:44:08,369 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:08,369 INFO L354 BasicCegarLoop]: trace histogram [114, 114, 113, 1, 1, 1, 1] [2018-07-25 08:44:08,369 INFO L415 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:08,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1875587901, now seen corresponding path program 226 times [2018-07-25 08:44:08,369 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:09,189 INFO L134 CoverageAnalysis]: Checked inductivity of 19437 backedges. 6555 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:09,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:09,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:44:09,189 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:44:09,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:44:09,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:44:09,191 INFO L87 Difference]: Start difference. First operand 346 states and 347 transitions. Second operand 118 states. [2018-07-25 08:44:09,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:09,753 INFO L93 Difference]: Finished difference Result 354 states and 355 transitions. [2018-07-25 08:44:09,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-07-25 08:44:09,753 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 345 [2018-07-25 08:44:09,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:09,754 INFO L225 Difference]: With dead ends: 354 [2018-07-25 08:44:09,754 INFO L226 Difference]: Without dead ends: 352 [2018-07-25 08:44:09,757 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20358, Invalid=33698, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 08:44:09,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-07-25 08:44:09,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 348. [2018-07-25 08:44:09,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-07-25 08:44:09,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 349 transitions. [2018-07-25 08:44:09,806 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 349 transitions. Word has length 345 [2018-07-25 08:44:09,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:09,806 INFO L472 AbstractCegarLoop]: Abstraction has 348 states and 349 transitions. [2018-07-25 08:44:09,806 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:44:09,806 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 349 transitions. [2018-07-25 08:44:09,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-07-25 08:44:09,807 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:09,807 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 114, 1, 1, 1, 1] [2018-07-25 08:44:09,808 INFO L415 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:09,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1446357483, now seen corresponding path program 227 times [2018-07-25 08:44:09,808 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:10,934 INFO L134 CoverageAnalysis]: Checked inductivity of 19665 backedges. 13110 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:10,934 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:10,934 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231] total 231 [2018-07-25 08:44:10,935 INFO L451 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-07-25 08:44:10,936 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-07-25 08:44:10,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13571, Invalid=40021, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 08:44:10,938 INFO L87 Difference]: Start difference. First operand 348 states and 349 transitions. Second operand 232 states. [2018-07-25 08:44:12,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:12,545 INFO L93 Difference]: Finished difference Result 582 states and 584 transitions. [2018-07-25 08:44:12,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-07-25 08:44:12,545 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 347 [2018-07-25 08:44:12,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:12,546 INFO L225 Difference]: With dead ends: 582 [2018-07-25 08:44:12,546 INFO L226 Difference]: Without dead ends: 349 [2018-07-25 08:44:12,550 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19551 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=27141, Invalid=92921, Unknown=0, NotChecked=0, Total=120062 [2018-07-25 08:44:12,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-25 08:44:12,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-25 08:44:12,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-25 08:44:12,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 350 transitions. [2018-07-25 08:44:12,600 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 350 transitions. Word has length 347 [2018-07-25 08:44:12,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:12,601 INFO L472 AbstractCegarLoop]: Abstraction has 349 states and 350 transitions. [2018-07-25 08:44:12,601 INFO L473 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-07-25 08:44:12,601 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 350 transitions. [2018-07-25 08:44:12,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-25 08:44:12,602 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:12,602 INFO L354 BasicCegarLoop]: trace histogram [115, 115, 114, 1, 1, 1, 1] [2018-07-25 08:44:12,602 INFO L415 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:12,603 INFO L82 PathProgramCache]: Analyzing trace with hash -970702126, now seen corresponding path program 228 times [2018-07-25 08:44:12,603 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:13,342 INFO L134 CoverageAnalysis]: Checked inductivity of 19780 backedges. 6670 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:13,342 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:13,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:44:13,343 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:44:13,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:44:13,344 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:44:13,344 INFO L87 Difference]: Start difference. First operand 349 states and 350 transitions. Second operand 119 states. [2018-07-25 08:44:13,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:13,948 INFO L93 Difference]: Finished difference Result 357 states and 358 transitions. [2018-07-25 08:44:13,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-07-25 08:44:13,948 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 348 [2018-07-25 08:44:13,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:13,949 INFO L225 Difference]: With dead ends: 357 [2018-07-25 08:44:13,949 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 08:44:13,952 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2018-07-25 08:44:13,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 08:44:14,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2018-07-25 08:44:14,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-25 08:44:14,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2018-07-25 08:44:14,003 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 348 [2018-07-25 08:44:14,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:14,003 INFO L472 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2018-07-25 08:44:14,004 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:44:14,004 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2018-07-25 08:44:14,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-25 08:44:14,005 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:14,005 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 115, 1, 1, 1, 1] [2018-07-25 08:44:14,005 INFO L415 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:14,006 INFO L82 PathProgramCache]: Analyzing trace with hash -836773830, now seen corresponding path program 229 times [2018-07-25 08:44:14,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 20010 backedges. 13340 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:15,345 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:15,346 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [233] total 233 [2018-07-25 08:44:15,346 INFO L451 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-07-25 08:44:15,347 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-07-25 08:44:15,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13805, Invalid=40717, Unknown=0, NotChecked=0, Total=54522 [2018-07-25 08:44:15,348 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand 234 states. [2018-07-25 08:44:16,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:16,874 INFO L93 Difference]: Finished difference Result 587 states and 589 transitions. [2018-07-25 08:44:16,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-07-25 08:44:16,874 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 350 [2018-07-25 08:44:16,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:16,875 INFO L225 Difference]: With dead ends: 587 [2018-07-25 08:44:16,875 INFO L226 Difference]: Without dead ends: 352 [2018-07-25 08:44:16,879 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 348 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19895 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=27609, Invalid=94541, Unknown=0, NotChecked=0, Total=122150 [2018-07-25 08:44:16,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-07-25 08:44:16,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2018-07-25 08:44:16,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-07-25 08:44:16,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2018-07-25 08:44:16,929 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 350 [2018-07-25 08:44:16,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:16,929 INFO L472 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2018-07-25 08:44:16,929 INFO L473 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-07-25 08:44:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2018-07-25 08:44:16,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-07-25 08:44:16,930 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:16,930 INFO L354 BasicCegarLoop]: trace histogram [116, 116, 115, 1, 1, 1, 1] [2018-07-25 08:44:16,930 INFO L415 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:16,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1962099187, now seen corresponding path program 230 times [2018-07-25 08:44:16,931 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:17,693 INFO L134 CoverageAnalysis]: Checked inductivity of 20126 backedges. 6786 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:17,693 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:17,694 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:44:17,694 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:44:17,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:44:17,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:44:17,695 INFO L87 Difference]: Start difference. First operand 352 states and 353 transitions. Second operand 120 states. [2018-07-25 08:44:18,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:18,286 INFO L93 Difference]: Finished difference Result 360 states and 361 transitions. [2018-07-25 08:44:18,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-07-25 08:44:18,286 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 351 [2018-07-25 08:44:18,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:18,288 INFO L225 Difference]: With dead ends: 360 [2018-07-25 08:44:18,289 INFO L226 Difference]: Without dead ends: 358 [2018-07-25 08:44:18,293 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13572 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21063, Invalid=34869, Unknown=0, NotChecked=0, Total=55932 [2018-07-25 08:44:18,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-07-25 08:44:18,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 354. [2018-07-25 08:44:18,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-07-25 08:44:18,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 355 transitions. [2018-07-25 08:44:18,349 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 355 transitions. Word has length 351 [2018-07-25 08:44:18,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:18,350 INFO L472 AbstractCegarLoop]: Abstraction has 354 states and 355 transitions. [2018-07-25 08:44:18,350 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:44:18,350 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 355 transitions. [2018-07-25 08:44:18,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-07-25 08:44:18,351 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:18,351 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 116, 1, 1, 1, 1] [2018-07-25 08:44:18,351 INFO L415 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:18,351 INFO L82 PathProgramCache]: Analyzing trace with hash 86741787, now seen corresponding path program 231 times [2018-07-25 08:44:18,351 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:19,713 INFO L134 CoverageAnalysis]: Checked inductivity of 20358 backedges. 13572 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:19,713 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:19,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235] total 235 [2018-07-25 08:44:19,714 INFO L451 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-07-25 08:44:19,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-07-25 08:44:19,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14041, Invalid=41419, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 08:44:19,718 INFO L87 Difference]: Start difference. First operand 354 states and 355 transitions. Second operand 236 states. [2018-07-25 08:44:21,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:21,672 INFO L93 Difference]: Finished difference Result 592 states and 594 transitions. [2018-07-25 08:44:21,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-07-25 08:44:21,672 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 353 [2018-07-25 08:44:21,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:21,673 INFO L225 Difference]: With dead ends: 592 [2018-07-25 08:44:21,673 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 08:44:21,680 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20242 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=28081, Invalid=96175, Unknown=0, NotChecked=0, Total=124256 [2018-07-25 08:44:21,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 08:44:21,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-07-25 08:44:21,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 08:44:21,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 356 transitions. [2018-07-25 08:44:21,730 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 356 transitions. Word has length 353 [2018-07-25 08:44:21,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:21,731 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 356 transitions. [2018-07-25 08:44:21,731 INFO L473 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-07-25 08:44:21,731 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 356 transitions. [2018-07-25 08:44:21,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 08:44:21,732 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:21,732 INFO L354 BasicCegarLoop]: trace histogram [117, 117, 116, 1, 1, 1, 1] [2018-07-25 08:44:21,732 INFO L415 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:21,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1182293310, now seen corresponding path program 232 times [2018-07-25 08:44:21,732 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:22,534 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 6903 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:22,535 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:22,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:44:22,535 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:44:22,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:44:22,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:44:22,537 INFO L87 Difference]: Start difference. First operand 355 states and 356 transitions. Second operand 121 states. [2018-07-25 08:44:23,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:23,224 INFO L93 Difference]: Finished difference Result 363 states and 364 transitions. [2018-07-25 08:44:23,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-07-25 08:44:23,224 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 354 [2018-07-25 08:44:23,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:23,225 INFO L225 Difference]: With dead ends: 363 [2018-07-25 08:44:23,225 INFO L226 Difference]: Without dead ends: 361 [2018-07-25 08:44:23,228 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13806 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21420, Invalid=35462, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 08:44:23,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-25 08:44:23,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 357. [2018-07-25 08:44:23,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-25 08:44:23,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 358 transitions. [2018-07-25 08:44:23,285 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 358 transitions. Word has length 354 [2018-07-25 08:44:23,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:23,286 INFO L472 AbstractCegarLoop]: Abstraction has 357 states and 358 transitions. [2018-07-25 08:44:23,286 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:44:23,286 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 358 transitions. [2018-07-25 08:44:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-25 08:44:23,287 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:23,287 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 117, 1, 1, 1, 1] [2018-07-25 08:44:23,287 INFO L415 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:23,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1982528554, now seen corresponding path program 233 times [2018-07-25 08:44:23,288 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 20709 backedges. 13806 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:24,647 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:24,647 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [237] total 237 [2018-07-25 08:44:24,648 INFO L451 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-07-25 08:44:24,649 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-07-25 08:44:24,652 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14279, Invalid=42127, Unknown=0, NotChecked=0, Total=56406 [2018-07-25 08:44:24,652 INFO L87 Difference]: Start difference. First operand 357 states and 358 transitions. Second operand 238 states. [2018-07-25 08:44:27,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:27,419 INFO L93 Difference]: Finished difference Result 597 states and 599 transitions. [2018-07-25 08:44:27,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-07-25 08:44:27,419 INFO L78 Accepts]: Start accepts. Automaton has 238 states. Word has length 356 [2018-07-25 08:44:27,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:27,420 INFO L225 Difference]: With dead ends: 597 [2018-07-25 08:44:27,420 INFO L226 Difference]: Without dead ends: 358 [2018-07-25 08:44:27,428 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20592 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=28557, Invalid=97823, Unknown=0, NotChecked=0, Total=126380 [2018-07-25 08:44:27,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-07-25 08:44:27,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2018-07-25 08:44:27,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-07-25 08:44:27,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 359 transitions. [2018-07-25 08:44:27,558 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 359 transitions. Word has length 356 [2018-07-25 08:44:27,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:27,558 INFO L472 AbstractCegarLoop]: Abstraction has 358 states and 359 transitions. [2018-07-25 08:44:27,558 INFO L473 AbstractCegarLoop]: Interpolant automaton has 238 states. [2018-07-25 08:44:27,559 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 359 transitions. [2018-07-25 08:44:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-07-25 08:44:27,560 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:27,560 INFO L354 BasicCegarLoop]: trace histogram [118, 118, 117, 1, 1, 1, 1] [2018-07-25 08:44:27,560 INFO L415 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:27,560 INFO L82 PathProgramCache]: Analyzing trace with hash 460093219, now seen corresponding path program 234 times [2018-07-25 08:44:27,560 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 20827 backedges. 7021 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:28,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:28,466 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:44:28,467 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:44:28,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:44:28,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:44:28,468 INFO L87 Difference]: Start difference. First operand 358 states and 359 transitions. Second operand 122 states. [2018-07-25 08:44:29,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:29,060 INFO L93 Difference]: Finished difference Result 366 states and 367 transitions. [2018-07-25 08:44:29,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2018-07-25 08:44:29,060 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 357 [2018-07-25 08:44:29,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:29,061 INFO L225 Difference]: With dead ends: 366 [2018-07-25 08:44:29,061 INFO L226 Difference]: Without dead ends: 364 [2018-07-25 08:44:29,064 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14042 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21780, Invalid=36060, Unknown=0, NotChecked=0, Total=57840 [2018-07-25 08:44:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-07-25 08:44:29,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 360. [2018-07-25 08:44:29,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-07-25 08:44:29,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 361 transitions. [2018-07-25 08:44:29,117 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 361 transitions. Word has length 357 [2018-07-25 08:44:29,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:29,118 INFO L472 AbstractCegarLoop]: Abstraction has 360 states and 361 transitions. [2018-07-25 08:44:29,118 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:44:29,118 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 361 transitions. [2018-07-25 08:44:29,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-07-25 08:44:29,119 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:29,119 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 118, 1, 1, 1, 1] [2018-07-25 08:44:29,119 INFO L415 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:29,119 INFO L82 PathProgramCache]: Analyzing trace with hash -231982005, now seen corresponding path program 235 times [2018-07-25 08:44:29,119 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:30,675 INFO L134 CoverageAnalysis]: Checked inductivity of 21063 backedges. 14042 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:30,676 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:30,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [239] total 239 [2018-07-25 08:44:30,676 INFO L451 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-07-25 08:44:30,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-07-25 08:44:30,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14519, Invalid=42841, Unknown=0, NotChecked=0, Total=57360 [2018-07-25 08:44:30,679 INFO L87 Difference]: Start difference. First operand 360 states and 361 transitions. Second operand 240 states. [2018-07-25 08:44:33,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:33,271 INFO L93 Difference]: Finished difference Result 602 states and 604 transitions. [2018-07-25 08:44:33,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2018-07-25 08:44:33,271 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 359 [2018-07-25 08:44:33,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:33,272 INFO L225 Difference]: With dead ends: 602 [2018-07-25 08:44:33,272 INFO L226 Difference]: Without dead ends: 361 [2018-07-25 08:44:33,276 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 357 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20945 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=29037, Invalid=99485, Unknown=0, NotChecked=0, Total=128522 [2018-07-25 08:44:33,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-25 08:44:33,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-25 08:44:33,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-25 08:44:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2018-07-25 08:44:33,328 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 359 [2018-07-25 08:44:33,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:33,328 INFO L472 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2018-07-25 08:44:33,328 INFO L473 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-07-25 08:44:33,328 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2018-07-25 08:44:33,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-25 08:44:33,329 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:33,329 INFO L354 BasicCegarLoop]: trace histogram [119, 119, 118, 1, 1, 1, 1] [2018-07-25 08:44:33,329 INFO L415 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:33,329 INFO L82 PathProgramCache]: Analyzing trace with hash -248401230, now seen corresponding path program 236 times [2018-07-25 08:44:33,329 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:34,138 INFO L134 CoverageAnalysis]: Checked inductivity of 21182 backedges. 7140 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:34,139 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:34,139 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:44:34,139 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:44:34,140 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:44:34,140 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:44:34,140 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand 123 states. [2018-07-25 08:44:34,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:34,844 INFO L93 Difference]: Finished difference Result 369 states and 370 transitions. [2018-07-25 08:44:34,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-07-25 08:44:34,844 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 360 [2018-07-25 08:44:34,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:34,845 INFO L225 Difference]: With dead ends: 369 [2018-07-25 08:44:34,845 INFO L226 Difference]: Without dead ends: 367 [2018-07-25 08:44:34,849 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14280 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2018-07-25 08:44:34,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-25 08:44:34,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 363. [2018-07-25 08:44:34,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 08:44:34,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 364 transitions. [2018-07-25 08:44:34,903 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 364 transitions. Word has length 360 [2018-07-25 08:44:34,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:34,904 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 364 transitions. [2018-07-25 08:44:34,904 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:44:34,904 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 364 transitions. [2018-07-25 08:44:34,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 08:44:34,905 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:34,905 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 119, 1, 1, 1, 1] [2018-07-25 08:44:34,905 INFO L415 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:34,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1804652570, now seen corresponding path program 237 times [2018-07-25 08:44:34,905 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 21420 backedges. 14280 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:36,304 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:36,304 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [241] total 241 [2018-07-25 08:44:36,305 INFO L451 AbstractCegarLoop]: Interpolant automaton has 242 states [2018-07-25 08:44:36,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2018-07-25 08:44:36,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14761, Invalid=43561, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 08:44:36,309 INFO L87 Difference]: Start difference. First operand 363 states and 364 transitions. Second operand 242 states. [2018-07-25 08:44:39,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:39,075 INFO L93 Difference]: Finished difference Result 607 states and 609 transitions. [2018-07-25 08:44:39,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-07-25 08:44:39,075 INFO L78 Accepts]: Start accepts. Automaton has 242 states. Word has length 362 [2018-07-25 08:44:39,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:39,076 INFO L225 Difference]: With dead ends: 607 [2018-07-25 08:44:39,076 INFO L226 Difference]: Without dead ends: 364 [2018-07-25 08:44:39,083 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21301 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=29521, Invalid=101161, Unknown=0, NotChecked=0, Total=130682 [2018-07-25 08:44:39,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-07-25 08:44:39,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2018-07-25 08:44:39,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-07-25 08:44:39,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 365 transitions. [2018-07-25 08:44:39,137 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 365 transitions. Word has length 362 [2018-07-25 08:44:39,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:39,137 INFO L472 AbstractCegarLoop]: Abstraction has 364 states and 365 transitions. [2018-07-25 08:44:39,137 INFO L473 AbstractCegarLoop]: Interpolant automaton has 242 states. [2018-07-25 08:44:39,137 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 365 transitions. [2018-07-25 08:44:39,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-07-25 08:44:39,138 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:39,138 INFO L354 BasicCegarLoop]: trace histogram [120, 120, 119, 1, 1, 1, 1] [2018-07-25 08:44:39,139 INFO L415 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:39,139 INFO L82 PathProgramCache]: Analyzing trace with hash -2009174957, now seen corresponding path program 238 times [2018-07-25 08:44:39,139 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-25 08:44:39,942 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:44:39,948 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:44:39,948 INFO L202 PluginConnector]: Adding new model down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:44:39 BoogieIcfgContainer [2018-07-25 08:44:39,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:44:39,949 INFO L168 Benchmark]: Toolchain (without parser) took 250845.92 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 433.5 MB. Max. memory is 7.1 GB. [2018-07-25 08:44:39,951 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:44:39,951 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.72 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:44:39,952 INFO L168 Benchmark]: Boogie Preprocessor took 21.73 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:44:39,952 INFO L168 Benchmark]: RCFGBuilder took 306.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:44:39,952 INFO L168 Benchmark]: TraceAbstraction took 250469.44 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 423.0 MB. Max. memory is 7.1 GB. [2018-07-25 08:44:39,954 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 0.23 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 43.72 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 21.73 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 306.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 250469.44 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 423.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 76). Cancelled while BasicCegarLoop was analyzing trace of length 364 with TraceHistMax 120, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 118 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 250.4s OverallTime, 240 OverallIterations, 120 TraceHistogramMax, 148.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 838 SDtfs, 3850 SDslu, 8491 SDs, 0 SdLazy, 538753 SolverSat, 26295 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43677 GetRequests, 7260 SyntacticMatches, 0 SemanticMatches, 36417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432760 ImplicationChecksByTransitivity, 102.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=364occurred in iteration=239, 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: 6.0s AutomataMinimizationTime, 239 MinimizatonAttempts, 476 StatesRemovedByMinimization, 119 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 21.2s SatisfiabilityAnalysisTime, 64.7s InterpolantComputationTime, 43797 NumberOfCodeBlocks, 43797 NumberOfCodeBlocksAsserted, 239 NumberOfCheckSat, 43558 ConstructedInterpolants, 0 QuantifiedInterpolants, 31363672 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 239 InterpolantComputations, 2 PerfectInterpolantSequences, 863940/1713600 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/down.i_4.bplTransformedIcfg_BEv2_5.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-44-39-964.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/down.i_4.bplTransformedIcfg_BEv2_5.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-44-39-964.csv Completed graceful shutdown